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What is Poly Butylene Adipate-Co-Terephthalate


Poly Butylene Adipate-Co-Terephthalate Characteristics:

Poly Butylene Adipate-Co-Terephthalate is a semi-crystalline polymer with a crystallization temperature of approximately 110°C and a melting point of approximately 130°C. PBAT has a density of 1.18 g/ml to 1.3 g/ml. PBAT has a crystallinity of approximately 30% and a Shore hardness of over 85. The processing performance of PBAT is very similar to LDPE and can be blown on LDPE processing equipment. PBAT can be blown on LDPE processing equipment.

Poly butylene adipate-co-terephthalate

PBAT Instruction:

PBAT is a biodegradable polymer composed of aromatic polyesters. Due to its good mechanical properties, PBAT is widely used in food, medical, textile, agricultural and other industries, and PBAT can be degraded by microorganisms in the environment.

PBAT is a biodegradable polymer synthesized from petrochemical resources. PBAT has a very high elongation at break, which makes PBAT one of the most promising alternatives to LDPE packaging films. However, the applicability of PBAT films is still limited by low strength. In this work, we used polyethylene glycol 600 as a coating agent to modify the surface of calcium carbonate. A series of PBAT/CaCO3 composite films with different CaCO3 particle sizes.

The effects of the particle size of CaCO3 filler and the content of capping agent on the mechanical. The biodegradation properties were tested by keeping the samples buried in soil or in artificial seawater for 90 days. PBAT was shown that the addition of PEG-600 improved the compatibility between the matrix and the CaCO3 filler, since the polar -OH group of PEG has a high affinity for the polar surface of CaCO3. In addition, the hydrophilicity of PEG-600 increases the diffusivity of water molecules and promotes the degradation of PBAT. This work provides experimental data and theoretical guidance to support the development of high-performance PBAT/calcium carbonate films for the disposable packaging industry.

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