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

doi:10.3969/j.issn.0251-0790.2012.04.029

Abstract

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

CLC Number:

O631

TrendMD:

WANG Xi, LI Li, CHEN Ning, WANG Qi. Effect of Hydrogen Bonding on Water States in Sorbitol Modified PVA System[J]. Chem. J. Chinese Universities, 2012, 33(04): 813.

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