Today, under the environment of green environmental protection, more and more customers and consumers are beginning to pay attention to the environmental protection of plastic bags and begin to understand green degradable plastic bags. So how to distinguish "pseudo-degradation" and "full degradation"?
First of all, we need to know what pseudo-degradable plastic bags and fully degradable plastic bags are.
Pseudo-degradable plastic bags
It refers to the addition of a certain amount of additives in the plastic production process to reduce its stability and make it easier to disintegrate in the natural environment, such as pseudo-degradable plastic bags such as photodegradation and thermal oxidative degradation. Although this plastic product can be disintegrated, it cannot be completely degraded. And this petroleum-based product is organically decomposed by chemical reaction rather than microorganisms, so it cannot be completely decomposed into organic matter, but will be decomposed into tiny fragments and enter the environment. These microplastics are ingested by animals and enter the food chain, and can eventually be returned to through the biosphere. Human society causes major problems.
So is PE plus starch considered pseudo-degradation? Strictly speaking, plastic products containing non-biodegradable polymer materials such as PE, PP, PS, PVC, EVA, PET, etc., are regarded as non-biodegradable polymers, regardless of whether any degradable materials PLA, PBAT, PHA, St, etc. are added to them. Non-degradable plastic products.
Fully degradable plastic bags
Fully degradable plastic bags refer to plastic bags that can be completely degraded into water and carbon dioxide. This fully degradable material is mainly PBAT, PLA, PBS, PPC, PHA, PCL. For example, corn, cassava, etc. are processed into lactic acid, which is polylactic acid PLA. These polymers, which have good biodegradability, can be completely degraded by microorganisms in nature under specific conditions after use, and finally generate carbon dioxide and water, which do not pollute the environment and are very beneficial to the protection of the environment. They are recognized as environmentally friendly materials.
