What do you know about degradable plastics?

May 18, 2022

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At present, our country advocates environmental protection very much, because environmental protection is not only in line with the concept of sustainable development, but also conducive to our physical and mental health. In addition, the plastic restriction measures launched by the state again in the past two years and a large number of beverage enterprises have developed environmental protection cups and straws, making the wave of environmental protection reach an unprecedented height. So do you know all about environmentally friendly materials? And, do you know biodegradable materials?

PLA

PLA polylactic acid is the most widely used degradable material, also known as polylactide, which is made of starch. The general principle is that glucose is obtained from starch raw materials through saccharification, and then high-purity lactic acid is fermented by glucose and certain bacteria, and then polylactic acid with certain molecular weight is synthesized by chemical synthesis method.

PBAT

PBAT is also a widely used degradation material, which is called polyadipic acid or butylene terephthalate. It is a copolymer of butylene adipate and butylene terephthalate. It has the characteristics of PBA and PBT. It has good ductility and elongation at break, as well as good heat resistance and impact properties; In addition, it also has excellent biodegradability.

PBS

PBS is believed to be unheard of by many people, because it is not as extensive and rare as the first two. It is called polybutylene succinate. It has good heat resistance, and the thermal deformation temperature and product service temperature can exceed 100 ℃. Its raw material source can be either petroleum resources or biological resources fermentation.

PHA

PHA is also a rare material, called polyhydroxyfatty acid ester. It is an intracellular polyester synthesized by many bacteria. It mainly exists as a storage material of carbon source and energy in organisms. It has physical and chemical properties similar to synthetic plastics and many excellent properties such as biodegradability, biocompatibility, optical activity, piezoelectric property, gas separation and so on.