Styrene-Assisted Maleic Anhydride Grafted Poly(lactic acid) as an Effective Compatibilizer for Wood Flour/Poly(lactic acid) Bio-Composites

被引：28

作者：

Du, Jun ^{[1
]}

Wang, Youyong ^{[1
]}

Xie, Xinfeng ^{[2
]}

Xu, Min ^{[1
]}

Song, Yongming ^{[1
]}

机构：

[1] Northeast Forestry Univ, Mat Sci & Engn Coll, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Heilongjiang, Peoples R China

[2] Michigan Technol Univ, Sch Forest Resources & Environm Sci, Houghton, MI 49931 USA

来源：

POLYMERS | 2017年 / 9卷 / 11期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

maleic anhydride grafted poly(lactic acid); styrene; wood flour; poly(lactic acid); bio-composites; interfacial adhesion; MELT FLOW BEHAVIOR; MECHANICAL-PROPERTIES; PLASTIC COMPOSITES; GREEN-COMPOSITES; PHYSICOMECHANICAL PROPERTIES; COUPLING AGENT; POLYPROPYLENE; BLENDS; IMPACT; BIODEGRADABILITY;

D O I：

10.3390/polym9110623

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This study aimed to evaluate the effect of styrene-assisted maleic anhydride-grafted poly(lactic acid) (PLA-g-St/MAH) on the interfacial properties of wood flour/poly(lactic acid) (PLA) bio-composites. PLA-g-St/MAH was synthesized by free-radical melt grafting using styrene as a comonomer and dicumyl peroxide as an initiator. The structure of PLA-g-St/MAH was characterized by Fourier transform infrared spectroscopy. Wood flour/PLA composites were prepared by compression molding using PLA-g-St/MAH as a compatibilizer. The effects of PLA-g-St/MAH on the rheological and mechanical properties, as well as on the fractured surface morphology of the composites were investigated. Results indicated that storage modulus, complex viscosity, equilibrium torque, and shear heat were significantly increased. The mechanical properties of the wood flour/PLA composites were also significantly increased after the addition of PLA-g-St/MAH. The maximum values were achieved at the loading rate of 3 wt % because of the improved interfacial adhesion between the wood flour and the PLA matrix.

引用

页数：12

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