Enhancement of melt elasticity for poly(3-hydroxybutyrate-co-3-hydroxyvalerate) by addition of weak gel
Enhancement of melt elasticity for poly(3-hydroxybutyrate-co-3-hydroxyvalerate) by addition of weak gel
复制标题
DOI：
10.1002/app.26631
复制
发表时间：
2008-01-15
影响因子：
3
通讯作者：
Yamaguchi, Masayuki
中科院分区：
文献类型：
--
作者：
Arakawa, Keiichi;Yokohara, Tadashi;Yamaguchi, Masayuki
本文研究了聚（3-羟基丁酸酯-co-3-羟基戊酸酯）（PHB-HV）与少量交联聚（环氧氯丙烷）（PECH）在熔融状态下的流变性能。结果表明，添加2wt%的xPECH可以显著提高PHB-HV的熔体弹性，而对剪切粘度没有影响。因此，PHB-HV的粘弹性性质以及因此可加工性可以通过共混交联的PECH来控制。(C)2007 Wiley Periodicals，Inc.
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.