How many classifications are there for degradable plastics?

Degradable plastics refer to the addition of some accelerants to promote its degradation function in plastics, or the synthesis of plastics with degradable properties, or the use of renewable natural raw materials to make plastics, in the use and storage period can meet the original application performance requirements, and after use, in a specific environment, so that the chemical structure can change significantly in a short period of time, causing the loss of some properties.

Classification of degradable plastics: At present, according to the objective conditions or mechanisms that cause degradation,

Degradable plastics can be roughly divided into: biodegradable plastics, photodegradable plastics, oxidative degradable plastics and water-degradable plastics. They can be combined with each other to form degradable plastics with better performance.

Such as: light/biodegradable plastics, etc

Photodegradable plastics: a class of plastics that are degraded by sunlight's photosynthesis;

Biodegradable plastics: A class of plastics that are degraded by the action of microorganisms such as bacteria, molds (fungi) and algae present in nature. Biodegradation can be divided into two types: completely biodegradable plastic box and destructive biodegradable plastic.

Oxidative degradable plastics: a type of plastics that are degraded by oxidation;

Hydrolyzed degradable plastics: a class of plastics that are degraded by hydrolysis;

Environmental degradable plastics: a general term for water-degradable plastics that are degraded by the combined action of exposure to environmental conditions, such as light, heat, water, oxygen, pollutants, microorganisms, insects, wind, sand and rain and other mechanical forces.

Fully biodegradable plastics: The main water of fully biodegradable plastics is made from natural polymers (such as starch, cellulose, chitin) or agricultural and sideline products through microbial fermentation or synthesis of biodegradable polymers, such as thermoplastic starch plastics, aliphatic polyesters, polylactic acid, starch/polyvinyl alcohol, etc.

Destructive biodegradable plastics: Destructive biodegradable plastics currently mainly include starch modified (or filled) polyethylene PE, polypropylene PP, polyvinyl chloride PVC, polybenzene PS, etc.