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What is the material of degradable plastic bags?

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General degradable plastic bags are made of polyethylene and starch, but this degradable plastic can only degrade large pieces of plastic into smaller pieces. The components of plastic molecules have not completely disappeared, so its degradation is limited. At present, a new degradable plastic has been developed in China. Its composition is synthesized by polyvinyl alcohol plus starch and photosensitizer. Polyvinyl alcohol is easier to degrade than polyethylene. Adding photosensitizer can accelerate the degradation of plastic by absorbing sunlight, and starch can promote the biodegradation of plastic in soil. Therefore, this new degradable plastic is easier to degrade than the previous one, and after degradation, the plastic components are decomposed into substances with simple molecular structure such as carbon and water, which is more environmentally friendly.
Degradable plastics, also known as environmental degradable plastics, refer to plastics that are easy to degrade in the natural environment after adding a certain amount of additives in the production process to reduce their stability.
The main application fields of degradable plastics include agricultural plastic film, various plastic packaging bags, garbage bags, shopping bags in shopping malls and disposable tableware.
Consultation record · answer: what is the raw material of degradable plastic bags on June 15, 2021? Hello, I have seen your question and am sorting out the answers. Please wait a moment. Generally, degradable plastic bags are made of polyethylene and starch, but this degradable plastic can only degrade large pieces of plastic into smaller pieces. The components of plastic molecules do not completely disappear, so its degradation is limited. At present, a new degradable plastic has been developed in China. Its composition is synthesized by polyvinyl alcohol plus starch and photosensitizer. Polyvinyl alcohol is easier to degrade than polyethylene. Adding photosensitizer can accelerate the degradation of plastic by absorbing sunlight, and starch can promote the biodegradation of plastic in soil. Therefore, this new degradable plastic is easier to degrade than the previous one, and after degradation, the plastic components are decomposed into substances with simple molecular structure such as carbon and water, which is more environmentally friendly. Degradable plastics, also known as environmental degradable plastics, refer to plastics that are easy to degrade in the natural environment after adding a certain amount of additives in the production process to reduce their stability. The main application fields of degradable plastics include agricultural plastic film, various plastic packaging bags, garbage bags, shopping bags in shopping malls and disposable tableware.

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