PBS(polybutyl succinate) is made of succinic acid and succinic acid by condensation polymerization, the resin is milky white, odorless and tasteless, easy to be nature of a variety of microorganisms or animals and plants in the body of the enzyme decomposition, metabolism, decomposition into carbon dioxide and water, is a typical fully biodegradable polymer materials.It has good biocompatibility and bioabsorbability.Its density is 1.26g/cm3, and its melting point is 114ºC. According to the height and distribution of molecular weight, its crystallinity can be between 30~45%.The mechanical properties are very excellent, close to PP and ABS plastics;PBS has convenient processing, can adapt to the current conventional plastic processing technology, good heat resistance, thermal deformation temperature and product use temperature can exceed 100ºC.Its synthetic raw materials can be obtained from either petroleum resources or fermentation of biological resources. PBS is a leader in biodegradable plastic materials.
PKAT, Chinese name is called poly terephthalic acid - butylene adipate, according to the source of biodegradable plastics can be divided into biological biodegradable materials and petrochemical based biodegradable materials, PKAT belongs to petrochemical based biodegradable plastics, biodegradable plastics research is very active and one of the best market application of biodegradable materials.
PBAT is a kind of polyester, polyester = diacid + diol, polyester also contains PBS, PBSA,
PBAT is prepared by direct esterification or transesterification of 1, 4-butanediol (BDO), adipic acid (AA), terephthalic acid (PTA) or diol terephthalate (DMT) as raw materials.
PBAT material can not only be biodegradable but also composting, so the use of PBAT can fight against white pollution. The biodegradable garbage bag produced by PBAT is the membrane material used in the recycling of biological waste in the biological composting waste center. It is mainly used in: fully degradable packaging film;Fully degradable packaging bags, including shopping bags, rolling garbage bags, pet poop bags, electronic products bags, food bags, plastic film, etc.
Drived by environmental protection policies, the application of PLA, PBAT, PHA, PCL, PBS and other biodegradable plastics in disposable tableware, packaging, agriculture, automotive, medical, textile and other fields is welcoming new opportunities for market development.There will also be a new round of innovation in the modification of biodegradable plastics, as well as related auxilaries, such as link extender, anti-hydrolytic agent, toughening agent, nucleating agent and antimicrobial agent.