Journal
POLYMER ENGINEERING AND SCIENCE
Volume 63, Issue 9, Pages 2878-2890Publisher
WILEY
DOI: 10.1002/pen.26412
Keywords
biodegradable film; epoxy soybean oil; poly(butylene adipate-co-terephthalate); thermoplastic starch
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In this paper, PBAT/thermoplastic starch (TPS) complexes were prepared using epoxidized soybean oil (ESO) as a reactive compatibilizer. Results showed that ESO could form a chemical bonding interface with PBAT and TPS. The tensile strength, elongation at break, tear strength and optical transparency of the PBAT/TPS/5%ESO composites were significantly improved compared to PBAT/TPS.
Biodegradable poly(butylene adipate-co-terephthalate) (PBAT) has excellent processing and mechanical properties. However, PBAT is expensive and its relatively slow biodegradation rate limits its wide application. In this paper, PBAT/thermoplastic starch (TPS) complexes were prepared by a two-step process using epoxidized soybean oil (ESO) as a reactive compatibilizer. The compatibilizing ability of ESO was investigated by FT-IR and GPC. Results showed ESO could form a chemical bonding interface with PBAT and TPS. Compared to PBAT/TPS, tensile strength, elongation at break and tear strength of PBAT/TPS/5%ESO composites increased by 84%, 53%, and 68%, respectively. The optical transparency of the PBAT/TPS/5%ESO film improved by 6% compared to the PABT/TPS film. This research offers a viable solution for the preparation of high performance, green PBAT/TPS complexes.
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