Influence of fiber surface-treatment on interfacial property of poly(L-lactic acid)/ramie fabric biocomposites under UV-irradiation hydrothermal aging

被引：37

作者：

Chen, Dakai ^{[1
]}

Li, Jing ^{[1
]}

Ren, Jie ^{[1
,2
]}

机构：

[1] Tongji Univ, Sch Mat Sci & Engn, Inst Nano & Biopolymer Mat, Shanghai 200092, Peoples R China

[2] Tongji Univ, Minist Educ, Key Lab Adv Civil Engn Mat, Shanghai 200092, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 126卷 / 03期

基金：

国家高技术研究发展计划(863计划);

关键词：

Biocomposites; Ramie fabric; Poly(L-lactic acid); Fiber surface-treatment; Interfacial property; POLY(LACTIC ACID); MECHANICAL-PROPERTIES; GREEN COMPOSITES; DEGRADATION; ABSORPTION; BEHAVIOR;

D O I：

10.1016/j.matchemphys.2011.01.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study is devoted to the effect of fiber surface-treatment on the interfacial property of biocomposites based on poly(L-lactic acid) (PLLA) and ramie fabric. Ramie fiber is used as reinforced material because it's lowest water absorption among sisal, jute, kenaf and ramie fiber. Fiber surface-treatment can increase the water absorption of natural fibers. SEM images show that PLLA biocomposites with treated ramie fabric exhibit better interfacial adhesion character. DMA results show that the storage modulus of PLLA biocomposites with treated ramie increase compared to neat PLLA and PLLA biocomposites with untreated ramie. Unexpectedly, fiber surface-treatment can cause an accelerated decline in mechanical properties of PLLA biocomposites after UV-irradiation hydrothermal aging. Finally, GPC results show that there is no obvious decline in the molecular weight of PLLA. The main reason for this decline is the interfacial destructive effect induced by the water absorption of ramie fiber. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：524 / 531

页数：8

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