Friday, February 11, 2011

Biodegradable Plastics

Biodegradable plastics - Are  plastics that will decompose in natural aerobic (composting) and anaerobic environments (landfill). Biodegration of plastics can be achieved by enabling  microorganisms in the environment to metabolize the molecular structure of plastic films to produce an inert humus-like material that is less harmful to the environment. They may be composed of either bioplastics, which are plastics whose components are derived from renewable raw materials

They may be composed of either bioplastics, which are plastics whose components are derived from renewable raw materials, or petroleum- based plastics which utilize an additive. The use of bio-active compounds compounded with swelling agents ensures that, when combined with heat and moisture, they expand the plastic's molecular structure and allow the bio-active compounds to metabolize and neutralize the plastic.

Biodegradable plastics typically are produced in two forms: injection molded (solid, 3D shapes), typically in the form of disposable food service items, and films, typically organic fruit packaging and collection bags for leaves and grass trimmings, and agricultural mulch.

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