高等学校化学学报

高等学校化学学报 ›› 2012, Vol. 33 ›› Issue (04): 813.doi: 10.3969/j.issn.0251-0790.2012.04.029

• 高分子化学 • 上一篇    下一篇

山梨醇改性聚乙烯醇体系的氢键作用及对水状态的影响

王郗, 李莉, 陈宁, 王琪   

  1. 高分子材料工程国家重点实验室(四川大学), 四川大学高分子研究所, 成都 610065
  • 收稿日期:2011-08-30 出版日期:2012-04-10 发布日期:2012-04-10
  • 作者简介:李莉, 女, 博士, 副教授, 主要从事聚合物结构与性能研究. E-mail: powerlily@yeah.net
  • 基金资助:

    国家自然科学基金(批准号: 50833003, 50903056)资助.

Effect of Hydrogen Bonding on Water States in Sorbitol Modified PVA System

WANG Xi, LI Li, CHEN Ning, WANG Qi   

  1. The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065, China
  • Received:2011-08-30 Online:2012-04-10 Published:2012-04-10
  • Supported by:

    国家自然科学基金(批准号: 50833003, 50903056)资助.

PDF (PC)

被引次数

19

摘要： 采用二维相关红外光谱研究了水渗透进入聚乙烯醇(PVA)及其改性基体过程中, 体系的氢键作用及对水状态的影响; 通过差示扫描量热分析(DSC)研究了改性剂山梨醇(S)对改性PVA中水状态的影响. 实验结果表明, S能通过其羟基与水形成较强氢键, 从而显著改变体系中水的状态及其蒸发行为, 使体系自由水含量逐渐减少, 水的蒸发峰温度升高.

关键词: 聚乙烯醇, 山梨醇, 水状态, 蒸发, 氢键

Abstract: Two-dimensional correlation ATR-FTIR spectroscopy was used to study the hydrogen bonding and the water states during the diffusing process of water into poly(vinylalcohol)(PVA) matrix. The effect of sorbitol on water states was also studied by DSC analysis. The results show that the addition of sorbitol into PVA changes the hydrogen bonds in system and apparently influences the water states and water evaporation behavior by forming strong hydrogen bonding with water. Consequently, the free water in system gradually reduces and the water evaporation temperature shifts to higher values, which is beneficial to the stable thermal processing of modified PVA.

Key words: Poly(vinyl alcohol), Sorbitol, Water state, Evaporation, Hydrogen bonding

中图分类号: 

TrendMD: