来源网址：http://www.rsoau.com 2019-10-30 16:53:42
Environmental protection is becoming more and more serious, so more and more attention has been paid to degradable plastics and other environmental protection materials. So, what are the degradable particles?
PLA: polylactic acid. It is a new type of bio based and biodegradable material, which is made of starch material proposed by renewable plant resources (such as corn). Glucose was obtained from starch by saccharification, then high-purity lactic acid was produced by fermentation of glucose and certain strains, and then polylactic acid with certain molecular weight was synthesized by chemical synthesis. It has good biodegradability and can be completely degraded by microorganisms in the nature under specific conditions after use, and finally generate carbon dioxide and water without polluting the environment, which is very beneficial to the maintenance of the environment and is recognized as environmentally friendly materials.
PBS: polybutylene succinate. White particles are synthesized by condensation polymerization of succinic acid and butanediol. The resin is milky white, odorless and tasteless. It is easy to be synthesized and metabolized by various microorganisms or animals and plants in nature, and finally synthesized into carbon dioxide and water. It is a typical complete biodegradable polymer material. It has good biocompatibility, bioabsorbability, good heat resistance, and the heat deformation temperature and product application temperature can exceed 100 ℃. Its synthetic raw materials can be obtained not only from petroleum resources, but also from fermentation of biological resources. PBS is one of the best biodegradable plastic materials.
PCL: polycaprolactone. It has good biodegradation, biocompatibility and nontoxicity, and is widely used as medical biodegradable materials and drug controlled release system. It can be used in tissue engineering as drug release system.
PHA: polyhydroxyfatty acid ester. It is a kind of intracellular polyester synthesized by many bacteria. It exists mainly as a storage material of carbon source and energy in organism. It has many excellent properties, such as the physical and chemical characteristics similar to synthetic plastics and biodegradability, biocompatibility, optical activity, piezoelectricity, gas separation and so on, which are not possessed by synthetic plastics. Polyhydroxyfatty acid esters have broad application prospects in biodegradable packaging materials, tissue engineering materials, slow-release materials, electrical materials and medical materials, but they can be widely used only after reducing the consumption cost of PHA.
PBAT: poly (adipic acid) / butylene terephthalate. PBAT is a thermoplastic biodegradable plastic, which 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 performance. In addition, it also has excellent biodegradability. It is the most active and the best degradation material in the market in the current research of biodegradable plastics. One of.
The above is the relevant content introduced by degradable particles manufacturers. For more information, please visit the website: http://www.rsoau.com