Synergetic Modification of Polybutylene Succinate and Poly(epichlorohydrin-co-ethylene oxide) Elastomer in Toughening Poly(lactic acid)

doi:10.11944/j.issn.1000-0518.2019.09.190096

Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (9): 996-1002.DOI: 10.11944/j.issn.1000-0518.2019.09.190096

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Synergetic Modification of Polybutylene Succinate and Poly(epichlorohydrin-co-ethylene oxide) Elastomer in Toughening Poly(lactic acid)

HU Kuan^a,JIANG Hai^b,HUANG Dong^b,LIU Chang^c(),ZHANG Kunyu^b^*(),PAN Li^a

^aTianjin Key Laboratory of Composite and Functional Materials,School of Materials Science and Engineering,Tianjin University,Tianjin 300350,China
^bSchool of Chemical Engineering and Technology,Tianjin University,Tianjin 300350,China
^cJilin Province Product Quality Supervision and Inspection Institute,Changchun 130022,China

Received:2019-04-09 Accepted:2019-06-14 Published:2019-09-05 Online:2019-09-05
Contact: Kunyu ZHANG
Supported by:
Supported by the National Natural Science Foundation of China(No.51573130)

Abstract

Abstract:

A ternary blend system was prepared via melt blending poly(lactic acid)(PLA) with renewable poly(butylene succinate)(PBS) and poly(epichlorohydrin-co-ethylene oxide) copolymer(ECO) to toughen PLA. The results of dynamic mechanical analysis(DMA) and scanning electron microscopy(SEM) showed that the ECO component improved the miscibility between PBS and PLA. The mechanical test proved that ECO and PBS could synergistically toughen the PLA matrix. The highest elongation at break was 280% for PLA/PBS/ECO(70/20/10) while the impact strength of PLA/PBS/ECO(70/10/20) blend was up to 23.7 kJ/m² which is 12 times as much as that of neat PLA. In the ternary blend, ECO plays a dual role as both the compatibilizer and the toughening agent, resulting in a favorable synergistic effect with PBS. Blending PLA with flexible biopolyester and bioelastomer is proved to be a simple and efficient way to obtain high performance biobased materials.

Key words: poly(lactic acid), poly(butylene succinate), poly(epichlorohydrin-co-ethylene oxide), ternary blend, toughening

HU Kuan, JIANG Hai, HUANG Dong, LIU Chang, ZHANG Kunyu, PAN Li. Synergetic Modification of Polybutylene Succinate and Poly(epichlorohydrin-co-ethylene oxide) Elastomer in Toughening Poly(lactic acid)[J]. Chinese Journal of Applied Chemistry, 2019, 36(9): 996-1002.

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Synergetic Modification of Polybutylene Succinate and Poly(epichlorohydrin-co-ethylene oxide) Elastomer in Toughening Poly(lactic acid)

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