来源网址：湖北快3走开奖结果http://www.rsoau.com 2019-02-18 14:07:52
Biodegradable plastics is an effective way to solve the environmental pollution caused by plastic discards and to alleviate the lack of petroleum resources. It is one of the directions for the future development of plastics industry.
According to the different degradation mechanism, biodegradable plastics can be divided into incomplete biodegradable plastics and complete biodegradable plastics. In the meantime, incomplete biodegradable plastics refer to mixing a certain amount of degradable substances in the conventional plastic guess, but can not be completely degraded by nature (such as PE, PP, PVC, etc.).
Complete biodegradable plastics are made of natural macromolecule or agricultural by-products by microbial fermentation, which can be degraded by 100% bacteria, fungi and other microorganisms in nature, and eventually differentiated into water and carbon dioxide (such as PHA, PHB, PCL, etc.). They play a very good role in protecting the environment, so they are also called "green plastics".
According to the composition and preparation of plastics products, biodegradable plastics can be divided into microbial degradable plastics, chemical degradable plastics and natural polymer blend degradable plastics.
In addition to its biodegradability, it also has the functions of easy processing and meeting the application requirements. As a new type of environment-friendly material, it is gradually replacing traditional petroleum plastics into millions of households.
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