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Characteristics of Biodegradable Blends of PBAST and Chemically Modified Thermoplastic Starch  

Shin, Boo-Young (School of Chemical Engineering, Yeungnam University)
Publication Information
Polymer(Korea) / v.35, no.6, 2011 , pp. 580-585 More about this Journal
Abstract
This article aims to enhance the biodegradability and environment-friendliness of petroleum based biodegradable poly(butylene adipate-co-succinate-co-terephthalate)(PBAST) by blending chemically modified thermoplastic starch(CMPS). CMPS is a kind of bio-based biodegradable resin which is manufactured by reacting starch with maleic anhydride(MA) in the presence of a plasticizer and a free radical initiator. The characteristic properties of PBAST/CMPS blends were investigated by observing their morphology, thermal, mechanical properties, and biodegradability. The good interfacial adhesion between the phases examined by SEM revealed that PBAST/CMPS blends were compatible blends. The tensile strength and elongation decreased with increasing CMPS content, while modulus increased. The biodegradability of the blends was much higher than that of pristine PBAST and increased with increasing CMPS contents.
Keywords
PBAST; CMPS; biodegradability; morphology; tensile property;
Citations & Related Records
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