Degradable materials refer to materials that can be decomposed into carbon dioxide, water and other elements under natural environmental conditions such as sunlight, temperature, water, compounds, fungi and bacteria, insects, mechanical forces and so on. At present, there are three types of environmentally friendly degradable materials in the market.

一、聚乳酸

1、 Polylactic acid

聚乳酸又稱聚丙交酯，是以微生物發(fā)酵產(chǎn)物乳酸為單體化學(xué)合成的。使用后可自動降解，不會污染環(huán)境。

Poly (lactic acid), also known as polylactide, is chemically synthesized with lactic acid, a product of microbial fermentation, as a monomer. It can be degraded automatically after use and will not pollute the environment.

二、淀粉塑料

2、 Starch plastic

淀粉塑料，指在PP等塑料中添加一定量玉米淀粉、木薯粉、木粉、竹粉等，達(dá)到環(huán)?？山到獾哪康?。含淀粉90%以上的淀粉塑料，添加的其他組份也是能降解的。

Starch plastic refers to adding a certain amount of corn starch, cassava powder, wood powder, bamboo powder, etc. to PP and other plastics to achieve the purpose of environmental protection and degradability. Starch plastics containing more than 90% starch can also be degraded by other components added.

三、光降解塑料

3、 Photodegradable plastics

光降解塑料是指在光的作用下能發(fā)生降解的塑料，通過化學(xué)合成或添加光敏劑獲得。

Photodegradable plastic refers to the plastic that can degrade under the action of light, which is obtained by chemical synthesis or adding photosensitizer.

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