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Analysis of the main components of degradable plastic bags
Biodegradable plastics are plastics that are degraded by the action of microorganisms such as bacteria, molds (fungi) and algae found in nature. The ideal biodegradable plastic is a polymer material that has excellent performance, can be completely decomposed by environmental microorganisms after being discarded, and is finally inorganicized to become an integral part of the carbon cycle in nature. "Paper" is a typical biodegradable material, while "synthetic plastic" is a typical polymer material. Therefore, the biodegradable plastic is a polymer material having both material properties of "paper" and "synthetic plastic". Biodegradable plastics can be divided into two types: fully biodegradable plastics and destructive biodegradable plastics.
Destructive biodegradable plastics: Destructive biodegradable plastics currently mainly include starch modified (or filled) polyethylene PE, polypropylene PP, polyvinyl chloride PVC, polystyrene PS, and the like.
Completely biodegradable plastics: Completely biodegradable plastics are mainly made from natural polymers (such as starch, cellulose, chitin) or agricultural by-products by microbial fermentation or synthesis of biodegradable polymers, such as thermoplastic starch plastics, aliphatic Polyester, polylactic acid, starch/polyvinyl alcohol, etc. are all such plastics.