# We sell plastic raw material # Biodegradable PBAT Raw Material
Product Description
PBAT/PLA Modification
PBAT has excellent ductility and fast molding speed, which can give it better processing performance; PBAT and polyethylene (PE) performance is similar, so it is more often used in film bag products, but PBAT's own draft strength, film openability and other properties are weaker than PE, and the cost is higher than PE, so it must be modified by blending, Biodegradable PBAT Raw Material can effectively reduce costs and improve product performance.
Advantages: PLA has good transparency, biocompatibility and biodegradability, and its degradation occurs under the conditions of industrial composting, and the final product obtained from complete degradation is carbon dioxide and water, which will not cause pollution to the environment. And PLA has high tensile strength, tensile modulus.
Disadvantages: high hardness, poor heat resistance, poor toughness and other shortcomings limit its industrial application.
Solution: Using PLA as filler of PBAT can effectively improve the tensile properties of PBAT, reduce the hardness and improve the toughness of PLA when used alone, increase the glass transition temperature of the composite, and improve the thermal stability of the blend. The final product with good overall performance is obtained.
It has been found that the aggregated structures of PBAT and PLA confirm that the biodegradation and hydrolysis rates in the amorphous region are higher than those in the crystalline fetch, due to the fact that the amorphous region has a looser structure and is more susceptible to microbial and enzymatic influences. This phenomenon also led to an increase in the crystallinity of the composites with time. In addition, the degradation of the composites was reflected by the change of the carbon to oxygen ratio, and the increase of the carbon to oxygen ratio after degradation was related to the PLA content in the composites.
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