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Industrialization of Sustainable Solutions: Modification and Blending of Bioplastics

SpecialChem / Jul 7, 2009

Industrialization of bioplastics takes the conventional ways of industrial plastics, optimization of the properties by compounding with additives and blending with other (bio)plastics, processing using standard methods. Bioplastics, directly or indirectly based on renewable biomass sources, vary considerably the one from the other. The most used are based on starch and on natural or synthetic polyesters derived from polylactic acid (PLA). Other polyesters are developing such as PHA, PHB... According to the used raw materials and polymerization methods, their behaviour can evolve from a rigid plastic up to an elastic material with melting points from about 40°C up to 200°C. As for conventional plastics, producers market ready-to-use grades processible by conventional methods. It is also possible to blend bioplastics with conventional plastics and to formulate customized recipes with a lot of additives from natural or synthetic origin as diversified as melt strength enhancers, impact improvers, stabilizers, plasticizers, colorants, clarifiers, antistatics, antifogs, barrier treatments...Alloys and composites play also essential roles.

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