Influence of Polyol Plasticizers on the Properties of Polyvinyl Alcohol Films Fabricated by Melt Processing

被引：1
作者：
Wenqian Wu
Huafeng Tian
Aimin Xiang
机构：
[1] Beijing Technology and Business University,School of Material and Mechanical Engineering
来源：
Journal of Polymers and the Environment | 2012年 / 20卷
关键词：
Polyvinyl alcohol; Polyol; Plasticizer; Melt processing;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this work, high-alcoholysis polyvinyl alcohol (PVA) films were fabricated by melt processing and the plasticizing effect of compound polyol plasticizers on PVA were investigated with X-ray diffraction (XRD), differential scanning calorimetry (DSC), rheological measurements, mechanical tests etc. Hydrogen bonding interactions occurred between PVA and plasticizer. With the increase of plasticizer, the flowability of PVA was improved and reached the maximum value at the plasticizer of 20%. Glass transition temperature (Tg) and melting point (Tm) decreased with the increase of plasticizer content. For the heterogeneous nucleation effect of plasticizer, new polymorph of PVA formed. The viscosity was sensitive to the shear rates. The incorporation of plasticizers into PVA resulted in the increase of elongation at break and impact strength, as well as the decrease of tensile strength.
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页码：63 / 69
页数：6
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