Enhancement of melt elasticity for poly(3-hydroxybutyrate-co-3-hydroxyvalerate) by addition of weak gel

被引：12
|
作者：
Arakawa, Keiichi [1 ]
Yokohara, Tadashi [1 ]
Yamaguchi, Masayuki [1 ]
机构：
[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, Nomi, Ishikawa 9231292, Japan
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2008年 / 107卷 / 02期
关键词：
biodegradable; polyester; blends; rheology; viscoelastic properties;
D O I：
10.1002/app.26631
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Rheological properties in a molten state are studied extensively for poly(3-hydroxybutyrate-co-3hydroxyvalerate), PHB-HV, with a small amount of crosslinked poly(epichlorohydrin), PECH, having low density of crosslink points. It is found that adding 2 wt % of xPECH greatly enhances the melt elasticity of PHB-HV, one of the serious defects of microbial PHB, whereas it has no effect on the shear viscosity. As a result, viscoelastic nature, and thus processability, of PHB-HV can be controlled by blending the crosslinked PECH. (C) 2007 Wiley Periodicals, Inc.
引用
收藏
页码：1320 / 1324
页数：5
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