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What is degradable plastic?
2021-01-27
Degradable plastic refers to a kind of plastic whose products have various properties that can meet the requirements of use, and the properties remain unchanged during the storage period, but can be degraded into environmentally sound substances under natural environmental conditions after use. Therefore, it is also called environmentally degradable plastic.
There are many new types of plastics: photodegradable plastics, biodegradable plastics, light, oxidation\biodegradable plastics, carbon dioxide-based biodegradable plastics, thermoplastic starch resin degradable plastics.
Polymer degradation refers to the process of breaking the polymerized macromolecular chains caused by chemical and physical factors. The degradation process in which polymers are exposed to oxygen, water, radiation, chemicals, pollutants, mechanical forces, insects and other animals and microorganisms, and other environmental conditions, is called environmental degradation. Degradation reduces the molecular weight of the polymer, and the physical properties of the polymer material decrease until the polymer material loses its usability. This phenomenon is also known as the aging degradation of the polymer material.
"The aging degradation of the polymer is directly related to the stability of the polymer. The aging degradation of polymers shortens the service life of plastics. For this reason, since the advent of plastics, scientists have devoted themselves to the anti-aging of such materials, that is, the study of stabilization, in order to obtain high-stability polymer materials, and scientists in various countries are also taking advantage of the degradation behavior of polymers. Race to develop environmentally degradable plastics.
The main application areas of degradable plastics are: agricultural mulch, various plastic packaging bags, garbage bags, shopping bags in shopping malls and disposable tableware, etc.
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