A new approach for morphology control of poly(butylene adipate-co-terephthalate) and soy protein blends

被引：50

作者：

Chen, Feng

Zhang, Jinwen ^{[1
]}

机构：

[1] Washington State Univ, Mat Sci Program, Pullman, WA 99164 USA

来源：

POLYMER | 2009年 / 50卷 / 15期

关键词：

Soy protein blend; Percolation; Bioplastic; MECHANICAL-PROPERTIES; THERMAL-PROPERTIES; POLYMER BLENDS; CONCENTRATE; PERCOLATION; EXTRUSION; FLOUR;

D O I：

10.1016/j.polymer.2009.06.004

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In contrast to most studies in the literature where soy protein was used as a particulate filler in hydrophobic thermoplastic polymers, in this study, soy protein concentrate (SPC) was processed as a plastic to blend with poly(butylene adipate-co-terephthalate) (PBAT). By adjusting water content in the formulated SPC from low to high prior to compounding, SPC exhibited behaviors ranging from rigid filler to deformable filler to plastic during blending. Detailed phase morphology of the blends was revealed by transmission electron microscopy and field emission scanning electron microscopy. Evidences showed that SPC formed percolated thread structures when additional water was added to SPC prior to compounding. Study of dynamic rheology also confirmed the formation of interconnected network structure. Accordingly, tensile mechanical properties were greatly improved for those blends with percolated SPC thread structures. The molecular weight change of PBAT in blends and influence of processing on soy protein solubility were also examined. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3770 / 3777

页数：8

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