Synergistic toughening of poly(lactic acid) by poly(butylene adipate-co-terephthalate) and poly(methyl methacrylate)-poly(butyl acrylate)-poly(methyl methacrylate) block copolymer

被引：5

作者：

Zhang, Haifeng ^{[1
]}

Dong, Chungang ^{[1
]}

Han, Xiangyan ^{[1
]}

Han, Yuanyuan ^{[1
]}

Zhao, Fengyang ^{[1
]}

Yan, Nan ^{[2
]}

Hu, Yuexin ^{[1
]}

Zhao, Guiyan ^{[1
]}

机构：

[1] Liaoning Petrochem Univ, Sch Petrochem Engn, Fushun 113001, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun, Peoples R China

来源：

POLYMER ENGINEERING AND SCIENCE | 2022年 / 62卷 / 07期

基金：

中国国家自然科学基金;

关键词：

MAM; mechanical properties; PBAT; PLA; synergistic toughening; MECHANICAL-PROPERTIES; PHASE MORPHOLOGY; BLENDS; COMPATIBILIZATION; POLYLACTIDE; PERFORMANCE; COMPOSITES;

D O I：

10.1002/pen.26007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Poly(butyleneadipate-co-terephthalate) (PBAT) was used to toughen poly(lactic acid) (PLA) with the addition of poly(methyl methacrylate)-poly(butyl acrylate)-poly(methyl methacrylate) (MAM) through melt blending. The impact toughness and tensile toughness of the PLA/PBAT/MAM ternary blends were greatly enhanced when the MAM content was higher than 5%. For PLA/PBAT/MAM (80/15/5) blend, the notched impact strength was as high as 42.4 kJ/m(2), and the elongation at break reached 194.7%. The structure-property relationship of the PLA/PBAT/MAM ternary blends were studied through scanning electron microscopy, dynamic mechanical analysis, and contact angle measurements. It is found MAM and PBAT have a synergistic toughening effect on PLA, the MAM acts as not only a compatibilizer but also a toughening agent, which can improve the compatibility and enhance the interfacial adhesion between PLA and PBAT. As a result, the overall mechanical properties of PLA blends were improved significantly. This result provides a simple to operate and more efficient method for PLA toughening.

引用

页码：2274 / 2282

页数：9

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