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HC Plastics News: Degradable plastics means adding a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizer, biodegradable agent, etc.) during the production process to reduce its stability and make it easier to Plastics degraded in the natural environment are environmentally friendly plastics. Here are some of the plastics in the field.
PLA: Polylactic acid
PLA is a novel biobased and biodegradable material made from starch raw materials proposed by renewable plant resources such as corn. The starch raw material is obtained by saccharification to obtain glucose, and then glucose and a certain strain are fermented to produce high-purity lactic acid, and then a certain molecular weight polylactic acid is synthesized by chemical synthesis. It has good biodegradability. After use, it can be completely degraded by microorganisms in nature under certain conditions, and finally produces carbon dioxide and water, which does not pollute the environment. This is very beneficial to the environment and is recognized as an environmentally friendly material.
PLA is non-toxic, non-irritating, high-strength, easy to process and form, has excellent biocompatibility, and has been proven to be highly promising in the human body. It is considered to be the most promising medical polymer. material.
PBS: polybutylene succinate
PBS is synthesized by condensation polymerization of succinic acid and butanediol. The resin is milky white, odorless and tasteless. It is easily decomposed and metabolized by various microorganisms or enzymes in animals and plants, and finally decomposed into carbon dioxide and water. Fully biodegradable polymer material. It has good biocompatibility and bioabsorbability, good heat resistance, heat distortion temperature and product use temperature can exceed 100 °C. The source of synthetic raw materials can be either petroleum resources or fermented by biological resources, and PBS is the leader in biodegradable plastic materials.
PCL: polycaprolactone
It has good biodegradability, biocompatibility and non-toxicity, and is widely used as a medical biodegradable material and a drug controlled release system. It can be used in tissue engineering as a drug delivery system.
At present, PCL is mainly used in controlled release drug carriers, cells, tissue culture frames, fully degradable plastic surgical sutures, medical modeling materials, industrial art modeling materials, and the like.
PHA: Polyhydroxyalkanoate
PHA is an intracellular polyester synthesized by many bacteria. It is mainly used as a storage material for carbon sources and energy in living organisms. It has physicochemical properties similar to synthetic plastics and biodegradable products not available in synthetic plastics. Many excellent properties such as properties, biocompatibility, optical activity, piezoelectricity, and gas barrier properties. Polyhydroxyalkanoates have broad application prospects in biodegradable packaging materials, tissue engineering materials, slow release materials, electrical materials, and medical materials, but can only be applied on a large scale after reducing the production cost of PHA.
PBAT: polyadipate/butylene terephthalate
PBAT is a thermoplastic biodegradable plastic. It is a copolymer of butylene adipate and butylene terephthalate. It combines the characteristics of PBA and PBT. It has good ductility and elongation at break. It has good heat resistance and impact properties; in addition, it has excellent biodegradability and is one of the most active and market-degradable materials in biodegradable plastics research. 
Editor in charge: Wang Ning 12
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