化工进展2012，Vol.31Issue(5)：1082-1087,6.
壳聚糖/聚乙烯醇共混膜的氢键和相容性
Hydrogen-bonding and compatibility of chitosan/polyvinyl alcohol blend films
摘要
Abstract
Chitosan （CS） /polyvinyl alcohol （PVA） blend films with different compositions were prepared by solution casting technical using 2% acetic acid/water as a solvent. The structure, hydrogen-bonding, thermal behaviors and crystallization of CS/PVA blend films were systematically investigated by variable temperature FTIR, TGA, DTA, DSC and WXRD. It indicated that strong hydrogen-bonding interactions existed between CS and PVA, leading to the increase in thermal stability of CS, the decrease in crystallinity of PVA, and enhancement of the compatibility of CS and PVA. When the weight ratio ofCS / PVA blend films was 10/0, 7/3, 5/5, 3/7 and 0/10, the initial decomposition temperature of blends was 244 ℃, 257 ℃, 260 ℃, 262 ℃ and 285 ℃ correspondingly. The melting temperature of PVA was decreased from 193 ℃ to 173 ℃. The glass transition temperature was increased from 74.2 ℃ to 80 ℃, and the crystallinity Xc declined from 3.57% to 1.97%.关键词
壳聚糖/聚乙烯醇/氢键/相容性/热行为Key words
chitosan/polyvinylalcohol/hydrogen-bonding/compatibility/thermal behavior分类
化学化工引用本文复制引用
祝二斌,辛梅华,李明春,林佳福..壳聚糖/聚乙烯醇共混膜的氢键和相容性[J].化工进展,2012,31(5):1082-1087,6.基金项目
福建省科技重点项目（2009H0030）、福建省自然科学基金（2009J01029,E0810019）及科技部科技人员服务企业资助项目（2009GJC40030）. （）
