Bio degradable plastics are roughly classified into seven types
One, PLA
Globe Plasticizer believes that Polylactic Acid (PLA) is a new type of biodegradable material, using renewable plant resources (such as corn) made from the starch feedstock proposed. It is understood that PLA usage accounts for 45.1% of biodegradable plastics, and is a well-deserved mainstay!
Two, poly-3-hydroxyalkanoate (PHA)
PHA is synthesized by microorganisms through the fermentation of various carbon sources of different structures of aliphatic **** polypolyester. The most common of these are poly-3-hydroxybutyrate (PHB), polyhydroxyvalerate (PHV) and ****polymer of PHB and PHV (PHBV). The main uses are: disposable tableware, non-woven fabrics, packaging materials, agricultural mulch, toys, wrapping film, glue, fiber and many other biodegradable products.
Three, poly ε-caprolactone (PCL)
Poly ε-caprolactone (PCL) is a low-melting polymer obtained by ring-opening polymerization of ε-caprolactone, whose melting point is only 62 ° C. Degradation studies on PCL have been conducted since 1976, and PCL can be completely decomposed by microorganisms in an anaerobic and aerobic environment.
Four, polyesters - PBS / PBSA
PBS?with aliphatic butanedioic acid, butanediol as the main raw material for the production of,? Both through petrochemical products to meet demand,? It can also be produced from naturally renewable crop products such as starch, cellulose, glucose, etc., through the biofermentation route. It can also be produced through bio-fermentation, thus realizing the concept of "from nature, back to nature". thus realizing the green cycle of production from nature and back to nature. Moreover, the raw materials produced by the bio-fermentation process can significantly reduce the cost of raw materials. can also significantly reduce the cost of raw materials, which can further reduce the cost of PBS. This further reduces the cost of PBS.
Five, aliphatic aromatic **** polyester
Germany BASF company made aliphatic aromatic random **** polyester (Ecoflex), the monomer is: adipic acid, terephthalic acid, 1,4-butanediol. The current production capacity is at 140,000 tons/year. Meanwhile, biodegradable plastic products based on polyester and starch have been developed.
Six, polyvinyl alcohol (PVA)
Water-soluble PVA film is a new type of plastic products in the international emergence. It utilizes PVA?s film-forming, water and biological two degradation characteristics, can be completely degraded to CO2 and H2O, is a veritable green high-tech environmentally friendly packaging materials.
Seven, carbon dioxide *** polymer
A new type of synthetic materials being studied, carbon dioxide as a monomer raw material in the role of bimetallic ligand PBM-type catalysts, was activated to a higher degree, and epoxide *** polymerization reaction occurs, generating aliphatic polycarbonate (PPC), after post-processing, you get the carbon dioxide resin materials. Domestic Inner Mongolia Mengxi Group of companies using Changchun Institute of Applied Chemistry technology, has built an annual output of 3,000 tons of carbon dioxide / epoxy compounds *** polymer resin device, the product is mainly used in packaging and medical materials.