Natural fiber-reinforced thermoplastic starch composites obtained by melt processing

被引：140

作者：

Girones, J. ^{[2
]}

Lopez, J. P. ^{[2
]}

Mutje, P. ^{[2
]}

Carvalho, A. J. F. ^{[1
]}

Curvelo, A. A. S. ^{[1
]}

Vilaseca, F. ^{[2
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[2] Univ Girona, Dept Engn Quim Agr & Tecnol Agroalimentaria, Grp Lepamap, Ma Aurelia Capmany 17071, Girona, Spain

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2012年 / 72卷 / 07期

关键词：

Polymer-matrix composites (PMCs); Mechanical properties; Thermomechanical properties; X-ray diffraction (XRD); Thermoplastic starch (TPS); CHEMICAL-MODIFICATION; MAIZE STARCH;

D O I：

10.1016/j.compscitech.2012.02.019

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Thermoplastic starch (TPS) from industrial non-modified corn starch was obtained and reinforced with natural strands. The influence of the reinforcement on physical-chemical properties of the composites obtained by melt processing has been analyzed. For this purpose, composites reinforced with different amounts of either sisal or hemp strands have been prepared and evaluated in terms of crystallinity, water sorption, thermal and mechanical properties. The results showed that the incorporation of sisal or hemp strands caused an increase in the glass transition temperature (T-g) of the TPS as determined by DMTA. The reinforcement also increased the stiffness of the material, as reflected in both the storage modulus and the Young's modulus. Intrinsic mechanical properties of the reinforcing fibers showed a lower effect on the final mechanical properties of the materials than their homogeneity and distribution within the matrix. Additionally, the addition of a natural latex plasticizer to the composite decreased the water absorption kinetics without affecting significantly the thermal and mechanical properties of the material. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：858 / 863

页数：6

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