Compared with PLA, PCL has better hydrophobicity, but the degradation rate is slower; at the same time, its synthesis process is simple and the cost is low. PCL has excellent processing properties and can be made into films and other products by ordinary plastic processing equipment. At present, PCL domestic production enterprises have Sinopec Baling Petrochemical Company. Mainly used in the medical field.

 

Polyester--PBS/PBSA

 

PBS with aliphatic succinic acid and butanediol as the main raw materials can meet the demand through petrochemical products, and can also be produced through bio-fermentation through natural renewable crop products such as starch, cellulose and glucose. Green circulation production from nature and return to nature.

 

Polyvinyl alcohol (PVA)

 

Water-soluble PVA film is a new type of plastic product that has emerged internationally. It utilizes PVA's film-forming properties, water and biological degradation properties, and can be completely degraded into CO2 and H2O. It is a veritable green high-tech environmental packaging material.

 

Water-soluble PVA film, in Europe, America, Japan, water-soluble PVA film has been widely used in the packaging of various products. The development of water-soluble PVA film in China is still in its infancy, and industrial R&D has only really begun in the past five years. It is mainly used in two fields of embroidery and water transfer (color printing of glass, ceramics, electrical enclosures, etc.). The annual usage of PVA in this respect is about 10,000 tons.

 

Carbon dioxide copolymer

 

A new type of synthetic material under study, which uses carbon dioxide as a monomer raw material to be activated to a higher degree under the action of a bimetallic coordination PBM type catalyst, and copolymerizes with an epoxide to form an aliphatic polycarbonate ( PPC), after post-treatment, a carbon dioxide resin material is obtained. In foreign countries, the first countries to study carbon dioxide copolymers were mainly Japan and the United States, but there has been no industrial production. Domestic Inner Mongolia Mengxi Group Corporation has adopted the technology of Changchun Institute of Applied Chemistry, and has built a device with an annual output of 3,000 tons of carbon dioxide/epoxy compound copolymer resin. The products are mainly used in packaging and medical materials.