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Poly Butylene Adipate-Co-Terephthalate


Poly Butylene Adipate-Co-Terephthalate Instruction:

Poly Butylene Adipate-Co-Terephthalate is a thermoplastic biodegradable plastic, which is a copolymer of butylene glycol adipate. PBAT has characteristics of both PBA and PBT, good ductility and elongation at break, as well as good heat resistance and impact properties.

Poly Butylene Adipate-Co-Terephthalate

PBAT Descrption:

PBAT, also known as polybutylene glycol butyrate, is a semi-aromatic, biodegradable thermoplastic copolyester that can be easily molded and thermoformed. PBAT is a random copolymerization of 1,4-butanediol, adipic acid, and dimethyl terephthalate (DMT) monomers. PBAT has many attractive properties similar to those of Hpolyethylene. For example, PBAT has a relatively high elongation at break (30-40%) and moderately high impact and puncture toughness, but only moderate tensile strength and low stiffness.

Poly Butylene Adipate-Co-Terephthalate (PBAT) is a plastic produced from 1, 4 butanediols, dimethyl terephthalate and adipic acid. PBAT is transparent, biodegradable, and compostable in nature and can be used in extrusion and injection molding processes.

PBAT Characteristics:

PBAT is a semi-crystalline polymer, usually with a crystallization temperature around 110°C and a melting point around 130°C. The density of PBAT is between 1.18g/ml and 1.3g/ml. The crystallinity of PBAT is about 30% and the Shore hardness is above 85. PBAT is a copolymer of aliphatic and aromatic, combining the excellent degradation properties of aliphatic polyesters and the good mechanical properties of aromatic polyesters. The processing performance of PBAT is very similar to that of LDPE and can be blown with LDPE processing equipment.

PBAT’s properties can be tuned by varying the ratio of its monomer units and by combination with other biodegradable polymers. They are typically similar to those of high or low density polyethylene, and thus can be used for similar applications in food packaging and agricultural film applications. Furthermore, PBAT is fully biodegradable (compostable) and can be processed on conventional blown film equipment used for polyethylene. PBAT has also been investigated as a toughening agent for poly(lactic acid) PLA.

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