1 Biodegradable plastics from renewable resources Sergio Bocchini
2 Innovation in the field of polymeric materials: research on new materials The driving force for research in biopolymers are: the fear of a possible significant rise in prices of petroleum products law enforcement that can made obligatory (for some applications) or encouraging their use the growing issues related to the waste recovery generated by fossil polymers
3 WASTE RECOVERY ISSUES Fossil fuels Convent. polymers (PP, PE, PS, PVC) Use Dispersion in the environment Not degradable wastes Landfill Waste combustion Global environmental issue Recycling Development of green polymeric materials
4 Landfill disposal It was used in the past because simple and economic. In the 1999 (APME 2002) 8,4 millions of tons were disposed using landfills Because of hygienic problems and landfill exhaustion, CEE is trying to disincentivate this methodology (Landfill Directive European Commission 1999/31/EC In the case of biopolymers, there are some problems due to methane emission (a gas far more harmful than CO 2 from environmental point of view) in anaerobic biodegradation J.H.Song et al. Puil. Trans. R. Soc. B , 2127
5 Waste combustion for energy recover In 2002 in EU 40 million tons were burned with energy recovery in 230 incinerators It is considered quite good view because the plastic material has a GCV (gross calorific value) is comparable to or greater than that of coal This system, however, is widely criticized In principle it should be good also for biopolymers however there are no data of GCV of biopolymers. J.H.Song et al. Puil. Trans. R. Soc. B , 2127
6 Recycling This technique is growing in the field of polymers from fossil resources. The goal is to "dignify" the waste, to make them suitable for applications including high-level in substitution of the virgin polymers Biopolymers can be recycled using traditional technique Actually the lack of specific plants, can create problems in the cycle of recycling petrochemical polymers
7 Biopolymers Taking into account the previous argument the biopolymers are an area with great potential development potential because they combine high Technical potential Eco-sustainability, form the resource point of view and the end of life
8 Biopolymers Based on a marker analyses of Hannover University (Dept. of Bioprocess Engineering), it was estimated that in the 2007 there were already 26 commercial producer of biopolymers and many other were active from the R&D point of view. About 60 society were active in the biopolymers sector (Bioplastics Magazine (03/07) Vol.2 pag 31) In a more recent study (2009) of bioplastics24.com 32 producers of biopolymers were reported (Bioplastics 09/10: processing parameters and technical characteristics a global overview) On Material Data Center (www.materialdatacenter.com) about 50 producer are cited
9 Biopolymers Despite the growing interest in the market for biopolymers, there is still some confusion regarding the definition of "biopolymer. This can lead to misunderstandings and errors in objective assessment on the market prospects and also, from the legislative point of view. therefore it is appropriate to give some definitions.
10 Biopolymers - Definition On the basis of European Bioplastics Association Biodegradable Polymers with compostability approved on the basis of EN The source (renewable or fossil fuel) is not important Polymers based on renewable source They should be biodegradable or not
11 Biopolymers Both categories presents some environmental benefits: Biodegradable polymers allow the disposal of products in composting plants without leaving residues and fragments The polymers from natural resources are "zero carbon foot print". All the CO 2 released at the end of the life cycle is "captured" by the new cultures in the following season
12 GLOBAL CARBON CYCLING THE ECO DRIVER CO 2 Biomass/Bio-organics Bio-chemical Industry 1-10years > 10-6 years Polymers, Chemicals & Fuels Chemical Industry Fossil Resources (Petroleum, Natural gas) Renewable Carbon CO 2 & Biomass Polymers Biochemical Industry Small, entreprenuerial business Green Polymers & Chemicals
13 Carbon foot print: kg CO 2 for 100 kg of plastics Intrinsic value proposition for bio feedstock R.Narayan 1^PLA World Congress, Munich 2008
14 Biodegradation ad legislation There are specific regulations, set by major international organisations (ISO, CEN, ASTM, DIN, Green PLA) for different applications and systems at the end of life
15 Biodegradation and Standards Knowledge of regulations on the biodegradation and compostable is very important for the development of biopolymers because: biodegradation can occur in very different environments This could generate errors and misunderstandings between manufacturers, customers, Associations Unlike other applications, the manufacturer finds it hard to carry out controls.
16 Standards as a communication tool Authorities Standards Producers Users
17 Biodegradation and Standards Biodegradation is a process in which substances and materials can be assimilated by microorganism and be so placed in the natural cycle. (according to Standard UNI CEN/TR ) The microorganisms that are present in every environment and assimilate organic waste play an important role in the biodegradation.
18 Biodegradation and Standards PRODUCT USE/DISPOSAL CONTROLLED UNCONTROLLED WASTEWATER SOLID WASTE OPEN WATER SOIL MARINE AEROBIC TREATMENT ANAEROBIC TREATMENT ANAEROBIC STABILIZATION COMPOSTING BIOGASIFICATION LANDFILL USE OF COMPOST IN SOIL C.Bastioli Handbook of Biodegradable Polymers, RAPRA
19 Biodegradability Order of aggression with regard to biodegradation in different environments Compost Soil Fresh Water Marine Water T + fungi + fungi + bacteria diluite bacteria bacteria bacteria C.Bastioli Handbook of Biodegradable Polymers, pag 165, RAPRA
20 Biodegradability The conversion reactions of organic carbon are different depending on whether the degradation occurs in aerobic or anaerobic environment Aerobic Biodegradation C POLIMER + O 2 CO 2 + H 2 O + C RESIDUE + C MICROBIC Anaerobic Biodegradation C POLIMER CH 4 + CO 2 + C RESIDUE + C MICROBIC Nota: C MICROBIC carbon incorporated in the (chemical compound, molecoles) of cells C RESIDUE carbon not yet degraded C.Bastioli Handbook of Biodegradable Polymers, pag 151, RAPRA
21 For regulation a material is biodegradable if : 1. It can be biodegraded in a microbiologically active environment 2. It does not introduce toxic substances in the environment 3. The concentration of heavy metals of tested material is less than one half of the corrisponding limit for the compost The biodegradation tests should be performed in parallel to the tests of biodegradation of a reference sample consisting of pure microcrystalline cellulose or from polycaprolactone
22 Biodegradation curve
23 Biodegradability - definitions Regulations give different definition of biodegradability taking into account Primary and last Biodegradability Presence of oxygen (aerobic and anaerobic biodegradability)
24 Biodegradability - definitions Primary Biodegradability (ISO regulation) : structural change (transformation) of a chemical compound by microorganisms, resulting in the loss of a specific property last Biodegradability (EN 13432) : Decomposition of an organic compound by microorganism, in presence of oxygen, in carbon dioxide, water and mineral salts and whatever other element (mineralization) and new biomass or, in absence of oxigen, in carbon dioxide, methan, mineral salts and new biomass.
25 Biodegradation It is a process than happen, usually, in two different phases: 1. Degradation Fragmentation: the action of moisture, heat, UV, and/or enzimes riduce molecular chains and the resistance of the polymer, the compounds are fragmented 2. Biodegradation: the fragments are consumed by the microorganisms as food source and energy and converted in CO 2 and H 2 O, the speed should be compatible with the environment times: Plastic Fragments CO 2 Plastic Plastic Fragments Microbs H 2 O Plastic Fragments Humus BPI Biodegradable Product Institute confused by the terms Biodegradable & Biobased
26 Biodegradation The rate and level of biodegradation is highly dependent on the environment in which the material is deposited : Moisture content (from waster with high water content) Oxygen presence ( aerobic or anaerobic environment) Temperature (high for compost, low for soil or in water) Microorganism concentration (high in waste treatment plants, low in sea water) Salt concentration Rules which provide all of these cases have been drafted
27 Overview of the main ISO standards Biodegradation standards Aerobic Tests Anaerobic tests In acqueous media soil In acqueous media ISO High solid ISO CO 2 developed ISO O 2 Demand ISO Developed CO2 Compost ISO Mineral bed Composting ISO emenda Soil ISO Other tests: marine environment (solo ASTM 5437 e 6691)
28 Other biodegradation rules There are specific rules (especially ASTM) to simulate the process of biodegradation in different environments landfill (ASTM D ). In landfill the biological activity is very low compared to compost and substrates for the production of biogas (for the lowest concentration of microorganisms) In Sea (ASTM D o ASTM D ASTM D 5209). These rules are interesting for specific applications (such as fishing lines, nets, disposable materials for boats and so on..) Resistance to mushrooms, bacteria
29 Recapitulation of the main ISO standards Of great significance are the standards for assessing the biodegradability in solids, both in compost that in soil, to evaluate the possibility of disposal is composting plants directly on the ground (mulch film, home composting, etc.). The biodegradation levell is independent from the shape and the dimension of the material for testing. However, the time to reach the level required by the rules of biodegradation depends on these factors. Consequently, if tests are conducted on different types of materials it is necessary that the shape and size of the samples are similar. In the case of powder particle size should be the same.
30 Compostability Compostability can be defined as a specific form of degradation that occurs in both industrial and home composting facilities. It is particularly important for the possibility of disposing of waste, especially from those derived from packaging or agricultural use. In particolar:
31 Compostability The composting process is the transformation of organic wastes in carbon dioxide, water, biomass and heat By action of microorganism normaly present in the environment (biodegradation). The process happens in dedicated plants that should insure the right developing of the process During the process the compost reaches C, with a moisture content of about 50-60%RH.
32 Composting At the end of the process the initial waste is transformed in a substance called compost, The smell and the appearance is of a fertile soil sanitized and stabilized as it has no pathogenic microbes (for humans and plants, insect larvae and weed seeds) and putrescible material, through the action of temperature
33 Composting In the composting plants this phenomenon is controlled and optimized in order to : Obtain high conversion rate, Effluent control, Final compost quality control, and so on
34 Composting To ensure a good composting process certain factors should be stable : Size of composting material: pregrinding is used to have good areation and easy release of CO 2 (average particle diameter between 0.5 and 5 cm) C/N Ratio Low ratio the process releases an high amount of NH 3 and there is a reduction in performance, For too high value the process slows down or stops for lack of elements necessary for microbial growth. (ISO between 20 and 30, according Piemonte Region between 15 and 40). The moisture content should be higher than 50%
35 Compostabily During the grinding, packaging and other objects in biopolymer present in compost should not interfere with the machinery and processes commonly used in composting plants. The size of the fragments obtained must be appropriate for the composting process
36 Composting Composting is a process that leads to significant benefits: Use of waste materials, derived from agriculture, urban and industrial waste, which, if not reused, can be harmful to the environment Return to the soil of organic matter that allows a return in terms of fertility in the medium and long term Allows a significant saving of chemical fertilizers by using the content of nutrients (N, P, K) in the compost
37 Level of biodegradability and compostability UNI EN Biodegradability (ISO or ISO and ISO 14851) The acceptance level is 90% to be achieved in less than 6 months Disintegrability * Samples of the test material is composted together with organic waste for 3 months. The mass of the residues of the test material with size> 2 mm must be less than 10% of the initial mass. * See ISO 14045
38 Compost quality Should not discharge toxic substances into the environment The compost is analyzed in the typical physical and chemical parameters as ph, salt content, density, N2, ammonium nitrogen, P, Mg and K Tests with life forms : Determination of germination by the method described in- UNI Annex K Determination of acute toxicity on earthworms by the method described in ISO
42 Final biodegradability Standard ISO ASTM D 6002 JIS K 6953 ASTM D 5338 (ISO 14855)
43 Test method to determin compost quality Standard EN ASTM D 6400 Test method Ecotoxicity test with not less than two types of plants. In accordance with OECD Guideline 208. Ecotoxicity test with cress and at least two other types of plant is to be conducted in accordance with OECD Guideline 208 Chemical characterisation of the compost: Volumetric weight, total dry solids, volatile solids, salt content, ph-value Nutrient content (N, NH 4 - N, P, Mg, Ca)
44 Major Production Systems of Biopolymers from Renewable Source 1. Use natural polymers that can be modified, but remain basically unchanged (eg. Polymers from starch, cellulose) 2. Fermentation to produce biomonomers which are then polymerized (eg. PLA) 3. Produce biopolymers directly in microorganisms (eg. PHA). 4. Produce monomers and polymers from bio-monomers fossil The second of these systems is gaining importance, the third, although there are first experimental productions, seems to be still far away from mass production. In the quarter, many companies are investing (eg. BioPET coca-cola)
45 Some examples of biodegradable material from renewable raw material(1) Starch Collection treatment of corn to extract the starch Starch destructuration and addiction of a polyester to increase mechanical properties ACIDE POLYLACTIQUE (PLA) Starch destructuration to form glucose Collecti on treatment of corn to extract the starch Convesion of glucose to form lactic acid Lactic acid polymerisation
46 Some examples of biodegradable material from renewable raw material (2) POLYHYDROXYALCANOATES (PHA) Bacteria «Ralstonia eutropha» Use of biopolymer as energy stock Fermentation of sugar into polyesters Cell disintegration, formation drying polymer extraction with solvents Object made in PHA CELLULOSE ACETATE
48 Hybrid Polymers The increasing demand for biopolymers and the lack of capacity to meet demand is pushing towards the production of hybrid materials, that is obtained by mixing a biopolymer and a polymer fossil.
49 Hybrid Polymers This approach, according to the manufacturer, allows substantially reduce the use of petrochemical raw materials and environmental benefits in terms of reducing CO 2 emissions in the life cycle of the product Toyota and other Japanese companies are developing this concept for parts that require higher performance are not intended for composting. This approach must be carefully evaluated because, even if it favors the development of polymers from natural resources, can create problems at the end of life. These materials, in fact, are not compostable nor recyclable if it can create problems with the existing lines
50 Hybrid Polymers Society Trade mark Biopolymer Petro-polymer Cereplast Cereplast Hybrid ResinTM TPS PP Cerestech Cereloy Eco TPS HDPE,LDPE, LLDPE, PP CardiaBiopolymers Cardia Biohybrid TPS Polyolefins Bayer Makroblend BC PLA PC PMTC EcoHybrid PLA/PHB PP, PTU, PETG RTP RTP Hybrid PLA PC, PMMA, or ABS PolyOne Resound PLA/PHA Poliesteri Different
52 A bit of history It 's interesting to underline that the biopolymers are on the market for a long time, some dating back to the origins of the development of this sector. The "celluloid" was invented in The first synthetic polymers were based on natural resources. Among the biopolymers from renewable resources "historic" include the types of cellulose, nylon 11, and the natural gums. Polycaprolactones and EVOH among biodegradable polymers have been developed since many years.
53 A bit of history With the development of cheaper technologies based on fossil resource, biopolymers had gradually lost its importance. In the '70s, after the first oil crisis, a new game was intense R & D to develop new classes of biopolymers, mainly for the packaging industry.
54 STARCH Collect Extraction of starch from corn Destrutturation of starch for recombination with a biodegradable polyester
55 Starch Starch is a carbohydrate (polysaccharide) found in many plants (corn, potatoes, wheat, etc..),widely available in nature. The annual production of starch is about 35 Million Tons of Half of U.S. Commercial use of starch hydrolyzed not food use food use
56 Amylose a): linear polysaccharide; Amylopectine b): branced polysaccharide
57 Structure and composition of starch particles in fuction of different vegetables K. Morawietz Bioplastics Conference 28/07/2007 Alessandria Italy
58 Starch Starch is present in the form of granules due to the strong intermolecular bonds between the hydroxyl groups. These supramolecular structure should be destroyed in order to use the starch as a thermoplastic material through different types of reaction. In most cases, the starch is then mixed with other polymers to obtain materials that are easily processable.
59 Starch plasticization
60 Polymers derived from Starch As a consequence, the polymers from starch can be very different : Polymers from pure starch (used as filler); Polymers from partially fermented starch; Polymers from destructured starch; Polymers from modified starch (sostitution of OH grups with ester or ether groups); Polymers from blend of starch with other polymers (polyesters, CPL, CA, PVOH). The blends obtained could be da flexible such as come PE or rigid such as PS. This makes it very difficult to make a comparison between the different grades or give indications of the properties. The differences between the different types are extremely high.
62 Blending with other polymers requires a careful study for formulation in order to obtain a good dispersion between phases (see picture below)
65 TPS with natural fibres Ventura produces a material called "Floralat" based on starch reinforced with natural fibers. In this way they can reach values of form about 4,000 MPa. Elastic Modulus [MPa] Floralat + 10% filler 4022 Floralat + 30% filler 4234 Stress at break [MPa] 34,8 33,5 Strain at break[%] 1,5 1,6 Density [g/cm 3 ] 1,34 1,34
66 Polymers from Starch The 75% of polymers from starch is used for packaging the other 25% in agricolture The quote of polymers from starch with respecto to the other biopolymers was evaluated as 75-80% (Ref. Utrecht University/Fraunhofer ISI) An interesting application is the use of starch as a filler in tire manufacturing (partial substitution of C black). The benefits in terms of noise reduction and less friction, resulting in lower consumption.
67 Other properties of polymers from starch Low barrier to water vapour Sensible to contact withh 2 O Low resistance to solvents Good barrier to oils and fat The barrier properties are highly variable depending on the formulation.
68 Polymers from starch processability The polymers from pure starch can be processed on thermoplastic lines after addition of plasticizers The modified polymers have better processability characteristics (depending on the degree of substitution, but lost in biodegradability) The blend with starch (usually polyester aliphatic / aromatic, PCL, CA, EVOH) and have better processability. It is processed in standard machines with minor modifications, eg. extrusion, thermoforming, blow film, injection molding, foaming
69 FILM PROPERTIES Low gloss, but discreet transparency Weldability on themselves or with other biopolymers, similar to that of PE and can be made at the same speed (Novamont) Excellent printability. According Novamont you can use water based inks or solvents without corona treatment Can be use for FFS (Form, Fill, Seal) Food approved Can be laminated on paper (hot glue, coating, extrusion coating or lamination) Possible lamination or extrusion coating
70 Barrier properties of films by litterature Novamont presents the data reported not to specific products, but the range in general. As you can see the permeability to O 2 covers the range from PET to HDPE C.Bastioli EPF School, Gargnano maggio 2009
71 Barrier properties Very interesting are the data submitted by Plantic. The TPS has been produced starting from high-amylose starch (80%), according to a patented technology.
72 MATER BI NF Film properties Temp melting C 110 Density gr/cm 3 1,29 MFI gr/10 min 3 σt MPa 22 Strain at break % 340 E t MPa 210 Res lacer MD/TD N/mm 36/46 Haze % 95 WVTR g30μ/m 2 24hr/90RH 850
73 Foam trays from starch polymer A very important application is that of the foam trays. They are soft and flexible with a density of g/l. The packaging can be realized with stretch film machine using up Automac HFFS film, laminates, films of cellulose (UCB Naturflex).
74 Foam trays TPS L. Garavaglia AIM Polimeri da fonti rinnovabili Bologna 2005
75 Foam trays TPS L. Garavaglia AIM Polimeri da fonti rinnovabili Bologna 2005
76 L. Garavaglia Foam trays TPS
77 TPS applications Bags for solid waste collection and composting A. Castellanza AIM Polimeri da fonti rinnovabili Bologna 2005
78 TPS applications FOOD PACKAGING MADE IN MATTER B Nets for fruits and vegetables Bags for bread Transparent windows for bags Rigid foam trays
79 TPS APPLICATIONS
80 TPS APPLICATIONS Application in the agricultural field film mulching A. Castellanza AIM Polimeri da fonti rinnovabili Bologna 2005
81 M.Malinconico Mulching films
82 World consumption of plastic materials (tons) in agriculture M.Malinconico
84 TPS applications Pots for nursery
85 Starch destructuration (glucose formation) PLA Collect Estraction of starch from corn Fermentation production of lactic acid from glucose Lactic acid Polymerization
86 PLA (Polylactic acid) It was one of the first commercially produced biopolymers is available from several manufacturer it is a polymer with application versatility with performance comparable to those of petrochemical polymers (PP, PS, etc...) It is, however, a brittle material with low resistance to temperature It is easy to recycle with different technique (mechanic, chemical).
87 Biodegradability of manufact made in PLA The PLA is compostable, or biodegradable in composting conditions : temperature di C in presence of high moisture level and microorganism in about days At room temperature and out of the composting conditions, PLA is chemically and physically resistant to degradation, such as traditional plastic materials (PE, PP, PS, PET, etc....) When used in normal conditions PLA made objects are equally stable and free from contamination by biodegradation, as the objects made by traditional plastics.
88 PLA production For PLA there are suppliers of technology for production of the monomer and polymerization The groups Uhde Inventa-Fischer can provide technology and engineering for the construction of a plant for the production of PLA. The production cost is estimated at 1,4 1,7 / Kg (depending on the cost of raw material) for a capacity of 20,000 tons per year of PLA. Lactic acid polymerisation grade is produced by Purac, and Galactic
89 Lactic acid Lactic acid, the monomer for the production of PLA, is a natural compound present in all animals. It is used in food, cosmetics, pharmaceutical, It is included in the positive list of permitted monomers for plastics approved for food contact. It is produced by sugar fermentation
90 Lactic acid Acidification, Purification
91 Lactic Acid Lactic acid is chiral thus there are two diastereoisomet L- or D- Lactic acid obtained by chemical synthesis it is a racemic mix (50% D and 50% L) Fermentation, instead, is very specific and essentially allows the production of a stereoisomer (99.5% di L-isomer and 0.5% of D-isomer) As a consequence, the polymers may have a different relationship between the two stereoisomers and therefore different characteristics and crystallinity
94 Lactic acid Lactic acid polymerisation grade is produced from Purac, with a market share of 70%, and from Galactic. Purac has built a 110,000-ton plant in Thailand. Purac recently developed technology for the production of D-lactide (plant from 5000 t / y in Spain from August 2008) In 2007, Galactic has created a J.V. with Total Petrochemicals (Futerro) with the aim of building a plant for PLA production.
95 PLA production- 1 There are two main methods for producing polylactic acid from lactic acid monomer, which differ both in terms of chemical / equipment, and from that of the type of polymer obtained : Direct condensation polymerization ring-opening polymerization
96 PLA production- 2 Direct condensation polymerization : Waterremoval of water through condensation 1) with the use of a solvent 2) under high vacuum 3) at high temperature has the great disadvantage of producing only the value of a molecular weight polymers with low to moderate, due to the difficulty of completely eliminating water and other impurities.
97 PLA production- 3 However, there are studies for improvement of the limitations presented by this technique, the Japanese Mitsui Chemicals has in fact developed a new process based on the direct polycondensation of L-lactic acid to allow the production of PLA with high molecular weight without the use of solvents.
98 PLA production 4 ring-opening polymerization catalytic
99 PLA production - 5 As mentioned above, lactic acid is a chiral molecule, and subsequent ring-opening polymerization can produce different types of polymers, each with different properties : e.g. : in the case of high concentration of L lactide can be obtained crystalline polymers, while in the opposite case we obtain a more amorphous material.
100 PLA main producers Producer Product Production Capacity [ton] Expansion NatureWorks LLC Natureworks ? Mitsui Lacea 500 Misun Biomaterial Revoda Toyobo Bioecol 200 Futerro**?? (2009) Unitika* Terramac compounding Teijin Biofront Pyramid Bioplastics Pyramid (2010) Hycail Hycail PLA Pilot plant sell to Tate&Lyle Toyota Motors Toyota Ecopla sell in the2008 a Teijin * Unitika is a compounder ** jv Total and Galactic
101 Manufact producers Manufact type Producer Fibers Kanebo Gohsen Teijin Unitika Films Treofan EarthFirst Film Mitsubishi Unitika Tohcello Laminated Kanebo Kasei
102 PLA producers Interesting developments are expected in Europe : In Italy in 2007 that created the Bio-on who is investigating the production of PLA from molasses and juices full of sugar cane and beet byproducts of other processes. The advantage is the low cost of these materials and their availability, not being used as food. Bio-On is also exploring the production of PHA An important agreement was reached between Total (through Petrofina) and Galactic (producer of lactic acid) to develop a production technology of PLA in a joint venture (Futerro).
103 PLA properties The properties can be modulated using the racemic form or co-lactic acid with other monomers Mechanical properties Tensile strength MPa Modulus MPa Strain 1 5 % Izod J/m Thermal properties Tg ~ 60 C, Tf C, Tc C Vicat 65 C Above 60 C tends to degrade in the presence of moisture
104 PLA properties: a comparison
105 PLA properties Density 1,25 g/cm 3 Trasparent, with high gloss Good resistance to UV Good barrier properties for smell moderate to O 2, CO 2, acqua, Weldable with different technique (hot, with ultrasounds, with RF ) Excellent behavior in permanent torsion and bending (dead fold) Can be used in contact with food
106 Trasparency (%) Comparison PLA vs. Competitors Trasparency PP alta trasp. SBS OPS A-PET PLA Materiale Luc Bosiers AIM 14 gennaio 2005 Bologna
107 PLA critical points As mentioned above, the critical points of PLA are: The low thermal resistance which makes it impossible to use for use with hot drinks, microwave, and ironing because of deformation of the artifacts in the transport The weakness that creates problems in thermoforming and film technology (breaks in the cutting, trimming, etc.). The low melt strength, which creates problems in blown film and in the process of foaming
108 Thermal resistance The PLA crystallizes very slowly and is therefore difficult to raise the level of crystallinity at speeds of conventional process. As a result, the thermal resistance remains low (around 60 C). The thermal resistance can be improved: accelerating the rate of crystallization nucleating heterogeneous or through the use of d-lactide, which acts as a seed of crystallization (stereocomplex), resulting in reduced molding cycles with the addition of natural fibers
109 THERMAL RESISTANCE According to Purac * d-lactide is much more effective than talc as nucleating agent and can considerably enhance The temperature of crystallization, Crystallinity level Crystallization rate. Consequently it improves the moulding cycle, that, according to Mazda, can be reduced to 1/5, and thermal resistance (T m C) The same advantages can be obtained, according Unitika ** who developed this technique, with a heterogeneous nucleating agent. *1 European Bioplastics Conference, Bruxelles 21 novembre 2006 ** 2 European Bioplastics Conference, Parigi, 21 novembre 2007
110 THERMAL RESISTANCE The developed technology developed from Purac is based on: Mixing PDLA with a standard PLA resin with the formation of crystallites sterocomplex. The mixture can be made standard for compounding machines (extruders, internal mixers) even if the rotating twin screw extruders are recommended. Purac Application data
111 After mixing THERMAL RESISTANCE It has a rapid formation of steroecomplex crystallites which act as nucleating agents and accelerate the solidification of PLA during processing (molding, extrusion..). It is important to operate at a higher temperature than the melting point of the PLA but less than that of steroecomplex Itis important precristallize the sterocomplex before transformation. In injection molding is necessary to have the temperature of the mold C (annealing) to promote the crystallization Purac Application data
112 Relative Cristallinity Effect of heterogeneous nucleating agent Isothermal crystallization of PLA 1,0 from 200 C to C/min 0,8 0,6 0,4 0,2 0, Time (min) S.Murase 2^ European Bioplastics Conference, Paris 21-22/11/2007
113 Properties of TE-7300 and TE-8300
114 The effect of fiber reinforce T. Yanagisawa 2^ European Bioplastics Conference, Paris 21-22/11/2007
115 Poor impact resistance To improve the impact resistance of PLA have been developed impact resistance agents, compatible with the same PLA. Some of the producers are Arkema (Biostrength), DuPont (Biomax) e Rohm and Haas (Paraloid). As an example we report the data obtained with a polyacrylate:
116 14 [%] 12 Impact resistance effect of a polyacrylate 3,5 3 [J] 10 2, ,5 Haze [%] Dart Drop Impact [J] , ,5 10 % BPM 500 in PLA B.Azimipour 2^ European Bioplastics Conference, Paris 21-22/11/2007 0
4A3 Advanced Polymer Synthesis Lecture 3: Biodegradable Polymers 4A3 - Slide 40 Learning outcomes By the end of todays lecture you should be able to: (i) discuss what biodegradability means, and why it
Automotive Base Oil Presentation What is a Base Oil? The refined petroleum mineral or synthetic material that is produced by a refinery to a required set of specifications. A lubricant s quality can depend
s Made with Industrial Biotechnology Consumer Bread Potassium bromate, a suspected cancer-causing agent at certain levels, added as a preservative and a dough strengthening agent microorganisms produces
Biodegradable polymers and plastics Andrej Kržan 1 Plastics are typically composed of artificial synthetic polymers. Their structure is not naturally occurring, so plastics are not biodegradable. Based
4 PROCESSING OF VARIOUS MATERIALS CHAPTER CONTENTS 4.1 Shaping Processes for Polymers Polymers Manufacturing Processes for Polymers 4.2 Rubber Processing Technology Processing of rubber into finished good
Coextruded Film Structures of PLA and EVOH Presented by: Pablo J. Garcia Research Engineer Kuraray America Inc. EVAL Business Unit Outline Background and objectives PLA and EVOH Method & materials Results
1. Injection Molding (Thermoplastics) l Molding: Injection (thermoplastics) INJECTION MOLDING of thermoplastics is the equivalent of pressure die casting of metals. Molten polymer is injected under high
Worldwide tank building applications using PP-Sheets: The effect of Foaming on properties Marcus Hoffmann 1, Dominic Müller 1, Marco Stallmann 1, Matt Curtis 2 1 Simona AG Teichweg 16, 55606 Kirn, Germany
Bio-based lightweight packaging materials Paul Fowler, Qiuyun Liu, Radek Braganca BC, Bangor University, Gwynedd, UK, LL57 2UW 1 Introduction Plastic is the least recycled packaging material compared with
Zero Waste: Organics Recycling Best Practices Compost Matters 2015 Compost Council of Canada Workshop Presented by: Isaul Lopez Biopolymers Sales & Business Development Canada Objectives: Importance of
Development of an innovative bio-based structural adhesive Blanca Palomo, R&D Engineer firstname.lastname@example.org RESCOLL Independent research company located in Pessac (33) specialized in technologic innovation
6 C h e m i c a l P r o p e r t i e s 6 1 R a te of W a ter and Moisture Absorption T h e rate of water absorption is ASTM D570 after 24 hours in water 0. 23~0. 26 T h e rate of water and moisture absorption
MICRO PLASTICS MOLDED NYLON 6/6 FASTENERS MECHANICAL TEST DATA - UNC - UNF Nylon 6/6 meets MIL-M20693B "A" Type 1, LP410A, and ASTM D789-66 Type 1, GDE 2 All test performed per ASTM specifications. Parts
Foam Injection Molding: Unique Process Solutions for Light Weighting Automotive Plastic Parts Steve Braig President & CEO Trexel, Inc. AGENDA Technology Overview > Chemical Foaming > Physical Foaming Foamed
THE MANUFACTURE OF POLYETHYLENE Three classes of polyethylene are imported into New Zealand for extruding into a wide variety of products. These are low density polyethylene (LDPE), high density polyethylene
Background on Biodegradable Additives This document summarizes the Biodegradable Products Institute s comments on the use of additives to promote biodegradation in traditional polymers, such as PE, PP,
Engineering Plastics Technical Presentation Product Overview TAROMID A PA resin Available in different grades, UV and heat stabilized, glass fibres reinforced (also high impact), with glass beads, mineral
Sustainable Plastics with Reduced Carbon Footprint & Reduced Waste Joseph P. Greene California State University, Chico Chico, CA 95929-0789 Abstract Plastic products can be made more sustainable by reducing
Process Technology Advanced bioethanol production and renewable energy generation from ligno-cellulosic materials, biomass waste and residues The INEOS Bio process technology produces carbon-neutral bioethanol
1) Product Description: SD-0150 GENERAL PURPOSE ABS (Acrylonitrile Butadiene Styrene) (TA) General Purpose ABS, SD 0150 grade, is a rigid thermoplastic with good processing characteristics. It is a high
BIOBASED MATERIALS ISSUES AND CHALLENGES Giovanni CAMINO Politecnico of Torino, Alessandria Campus email@example.com CONTENTS Biosourcing definition and measurement Sustainability and Life Cycle
Renewables-based Chemicals From raw material opportunities to increased performance Markus Piepenbrink, Global New Business Development, Chemical Intermediates BASF BASF We create chemistry Our chemistry
RECYCLING OF WASTE GLASS FIBRE REINFORCED PLASTIC WITH MICROWAVE PYROLYSIS (LIFE07 ENV/S/000904) Layman s Report SUMMARY OF THE PROJECT Wind power is one of today s fastest growing energy sources. In the
Because sustainability matters 1992 Mike Biddle begins work on plastics separation Richmond, CA - USA 2002 Edison Award for Innovation 2005 Our aim is to be the leading global plastics recycling company
THE IMPROVING ENGINEERING EDUCATION ImpEE PROJECT Recycling of Plastics Plastic waste in the UK 3 million tonnes of waste plastic are produced a year in the UK. 1 tonne = 20,000 plastic bottles 7% of this
Technical Data Sheet Ixef 1022 Ixef 1022 is a 50% glass-fiber reinforced, general purpose compound that exhibits very high strength and rigidity, outstanding surface gloss, and excellent creep resistance.
Balancing chemical reaction equations (stoichiometry) This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit
Effect of Sterilization Techniques on Polymers Contents of Presentation Introduction to Polymers Properties and Stability of Polymers Affect of Ionising Radiation and Ethylene Oxide on Polymers The need
Thermoplastic composites Definition By definition, a thermoplastic is a material based on polymer (macromolecular compound) which can be shaped, in a liquid (viscous) state at a temperature either higher
Polystyrene Recycling Sean Derrick Green Manufacturing Initiative Sept. 14 th, 2010 Polystyrene (PS) Aromatic polymer made from styrene monomers Cheap relatively easy to manufacture and process Thermoplastic
Dispersions for the adhesive industry Innovative raw materials for numerous applications Not all are the same! These days, almost all industries are dependent on innovative adhesive technologies. Modern
Promotional Items Promotional Items Introduction This section provides information on currently available promotional item options that can help to move the University of Saskatchewan toward its sustainability
Chlorinated polyethylene ELASLEN TM Application for Wire and Cable 1 About the company Company Name : SHOWA DENKO K.K. Type of Industry : Diversified Chemical Company Formed : June 1, 1939 Employee : 10,577
What is biodegradation? Biodegradation is the process by which organic substances are broken down by living organisms (96% of Bacteria are aerobic - active in the presence of oxygen). There is therefore
Tiangang TM BW-10LD Oligomeric Hindered Amine Light Stabilizer (HALS) Poly-(N-β-hydroxyethyl-2,2,6,6-tetramethyl-4-hydroxy-piperidyl-succinate) CAS number 65447-77-0 BW-10LD BW-10LD is a highly effective
Naue GmbH&Co.KG Quality Control and Quality Assurance Manual For Geomembranes July 2004 V.O TABLE OF CONTENTS 1. Introduction 2. Quality Assurance and Control 2.1 General 2.2 Quality management acc. to
Stora Enso Barrier Coating Options English Replacing fossil-based materials with renewable materials There are no longer any excuses to opt for anything but a renewable packaging material. Even in demanding
A NEW GENERATION OF FLAME RETARDED POLYAMIDES BASED ON PHOSPHINATES S. Hörold, B. Naß, O. Schacker and W. Wanzke Clariant GmbH, Division Pigments & Additives, BU Plastic Industries, Development Flame Retardants,
Session Five: Modern XLPE Materials for Extruded Energy Cable Systems Abstract Hakan Lennartsson Senior Technical Service Manager, Borouge Hong Kong Pte. Ltd. The first medium voltage cables using extruded
Briefing Paper: What are Conversion Technologies? November 2011 Primary Author: Bob Barrows What are conversion technologies? The term conversion technology encompasses a broad range of technologies used
Acrylic and Styrenic Monomers from Biomass BPM-060 ACTION BPM Symposium, Wageningen, June 27, 2013 Jérôme Le Nôtre Biobased Commodity Chemicals Group Plastics Biobased Non biodegradable Bioplastics Bio-PE
Sealed Air Corporation Intermediate Bulk Containers For Aseptic and Non Aseptic Products Melbourne, Australia Primary Manufacturing Pouch Making Injection molding for fitments Film extrusion Clean Room
Unit 2: Nature s Chemistry 1. A Fuel is a substance which burns giving out energy. 2. Oxygen is needed for anything to burn 3. Combustion is another name for burning Test for Oxygen - Relights a glowing
What Is Integrated Solid Waste Management? This fact sheet provides an overview of options for managing solid waste, identifies the important issues you should consider when planning for solid waste management,
Choosing The Proper Short Cut Fiber for Your Nonwoven Web ABSTRACT You have decided that your web needs a synthetic fiber. There are three important factors that have to be considered: generic type, diameter,
High performance UV barrier additives based on highly dispersed metal oxides Introduction Ultra-Violet can cause damage to polymers & in the case of packaging, to the contents UV absorbers are valuable
Rigid Packaging in PET Products, Production & Critical Success Factors Andreas Blin Sales and Product Manager CPP and PET-Sheet Brückner Maschinenbau GmbH & Co. KG Brückner Group Members Brückner Maschinenbau
A Guide to Thermoform Processing of Polypropylene Introduction Thermoforming is the process of heating plastic sheet to a pliable state and forming it into shape. Thermoforming offers processing advantages
Multilayer packaging films 2011 Cologne 5-7 October 2011 organised by AMI Simultaneous orientation for barrier oriented film Presented by Giovanni Stocchetti GAP Classification of Biaxially Oriented Films
SUPERNOVA Supernova from PTS is the state-of-the-art, high-performance, odourless chemical cleaning compound for all thermoplastic process equipment available in concentrate or ready-to-use form. Supernova
Table of Contents Section 1 General Information......................................... 4 Description........................................................................ 4 Properties and Characteristics........................................................
Training Objective After watching this video and reviewing the printed material, the student/trainee will gain a knowledge and understanding of the blow molding process and its basic variations. The basic
Product Description: Nu G Medical Waste System Technology (Pyrolysis / Thermal Decomposition) The NU G System uses pyrolysis thermal decomposition to treat infectious wastes typically generated in hospitals.
Natti S. Rao Nick R. Schott Understanding Plastics Engineering Calculations Hands-on Examples and Case Studies Sample Pages from Chapters 4 and 6 ISBNs 978--56990-509-8-56990-509-6 HANSER Hanser Publishers,
This presentation is courtesy of Advances in Flexible Packaging Adhesives CPP Expo Presentation September, 2005 Nancy Smith Agenda Basic types/ functions of adhesives used in flexible packaging Laminating
1 Why is rheology important? Examples of its importance Summary of important variables Description of the flow equations Flow regimes - laminar vs. turbulent - Reynolds number - definition of viscosity
Novel biobased thermoplastic foams BIOMATERIALS Towards Industrial Applications 22.5.2013 Startup Sauna, Espoo Otaniemi Tero Malm VTT Technical Research Centre of Finland 2 Outline Motivation Introduction
Chair of Chemistry of Biogenic Resources TU München - R&D activities - Chair of Chemistry of Biogenic Resources Schulgasse 18, 94315 Straubing, Germany Sieber@tum.de www.rohstoffwandel.de Locations Freising
Fiber Recycling in the United States Youjiang Wang School of Materials Science & Engineering, Georgia Institute of Technology Atlanta, Georgia 30332-0295 USA Abstract Due to the growth in world population
Topics to be Covered Elements of Addition Polymerization Branching and Tacticity The Effect of Crystallinity on Properties Chapters 1 & 2 in CD (Polymer Science and Engineering) What Are Polyolefins? The
Renewable Energy The Ethanol Production Process Dry Mill Flow Meters and Controls Direct Reading Flowmeters For Liquids and Gases Ethanol- How it s made... There are three main uses for ethanol (industrial,
Lesson: Plastic Polymers Grade: 4-5 Subject: Science Objectives: Students will: conduct a series of tests to determine the properties of different types of plastics audit the plastic waste generated in
Product Information Mylar polyester film Physical-Thermal Properties Mylar polyester film retains good physical properties over a wide temperature range ( 7 to 15 C [ 9 to 3 F]), and it is also used at
Physical & Chemical Properties Properties Carbon black can be broadly defined as very fine particulate aggregates of carbon possessing an amorphous quasi-graphitic molecular structure. The most significant
Page 1(6) Fly Me CHAIR 1 Description and assessment of the Materials used in the Product 2 Description and assessment of the Production process 3 Description and assessment of the Surface Treatment Methods
Ingeo Fibre Apparel Product Guidelines Fiber to Fabric 1. Introduction to Ingeo fibers 2. Fiber to yarn 3. yarn to fabric Apparel Products 1. Introduction to Ingeo fibers Ingeo fibre The only synthetic
PRACTICAL AND THEORETICAL CAPSULE COMMON PLASTICS May 2008 WORKING DOCUMENT plastics_capsule_plastics_identification.doc 1 05/02/14 Objective: The objective of this capsule is to draw up a resume of the
Use of Substitute Fuels in Large Combustion Plants (LCPs) By Pat Swords Content of the Presentation What are substitute fuels What is the experience to date with these fuels What are the regulatory implications
DOW ECOLIBRIUM Bio-Based Plasticizers - Greening of PVC with Renewably Sourced Plasticizers Bharat I. Chaudhary R. Eaton, B. Sczekalla, C. Laufer, B. Neese, A. Ghosh-Dastidar The Dow Chemical Company Outline
New Transparent High-Barrier Film for Advanced Retort Applications Tatsuya Oshita KURARAY CO., LTD ABSTRACT KURARISTER TM, which is henceforth called Hybrid film, is a new transparent high-barrier film
Example: 2 Design low rate trickling filter for secondary treatment of sewage generated from 10000 persons with rate of water supply 170 LPCD. The BOD 5 after primary treatment is 110 mg/l and BOD 5 of
Technical Data Sheet Amodel AS-1133 HS Amodel AS-1133 HS is a 33% glass reinforced, heat stabilized (PPA) resin that provides excellent structural integrity in molded parts, even those with wall thicknesses
Biocomposites Properties and Applications Bo Madsen and David Plackett Materials Research Department and Danish Polymer Centre Risø National Laboratory Denmark Contents About Risø National Laboratory About
APPLIED POLYMER INNOVATIONS BV Leading in high-end fiber applications of (bio-based) polymers Production and sale of special technical yarns and monofilaments 1 compostable bio-degradable in natural environment
FOAMAZOL Chemical Foaming Agents CHEMICAL FOAM EXTRUSION PROCESSING GUIDE Polymer Foaming Agent foam FOAM EXTRUSION USING CHEMICAL FOAMING AGENTS Introduction The basics of foam extrusion consist of mixing
Features of the formation of hydrogen bonds in solutions of polysaccharides during their use in various industrial processes. V.Mank a, O. Melnyk b a National University of life and environmental sciences
EL724. Biodegradable Resin Products [EL724-2002/2/2003-114] 1. Scope The criteria shall apply to the product formed and manufactured mainly based on biodegradable resin of single quality or more than two
INTRODUCTORY CHEMISTRY Concepts and Critical Thinking Sixth Edition by Charles H. Corwin Chapter 13 Liquids and Solids by Christopher Hamaker 1 Chapter 13 Properties of Liquids Unlike gases, liquids do