Citation: 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. doi: 10.11944/j.issn.1000-0518.2019.09.190096 shu

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

a.
Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
b.
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
c.
Jilin Province Product Quality Supervision and Inspection Institute, Changchun 130022, China

Corresponding author: LIU Chang, valborg@163.com ZHANG Kunyu, kyzhang@tju.edu.cn
Received Date: 9 April 2019
Revised Date: 7 May 2019
Accepted Date: 14 June 2019

Fund Project: Supported by the National Natural Science Foundation of China(No.51573130)the National Natural Science Foundation of China 51573130

Figures(5)

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