文献类型：期刊文献

中文题名：聚氨酯红外光谱氢键化谱带的归属与定量分析

英文题名：INFRARED SPECTRAL ANALYSIS OF HYDROGEN BONDING IN POLYURETHANE

作者：罗宁[1];王得宁[1];应圣康[1]

机构：[1]华东理工大学材料科学研究所

年份：1995

卷号：18

期号：4

起止页码：200

中文期刊名：合成橡胶工业

外文期刊名：China Synthetic Rubber Industry

收录：CSTPCD;;北大核心:【北大核心1992】；CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金

语种：中文

中文关键词：聚氨酯;红外光谱;氢键化;定量分析

外文关键词：polyurethane;hydrogen bonding;infrared spectrum;review

摘要：聚氨酯（ＰＵ）红外光谱图中与氢键化有关的基本谱带已有归属，但最近一些研究工作表明这些谱区的复杂性。胺基区中谱带数目多、重叠严重、摩尔吸光系数随波数的变化较大，用以分析ＰＵ的氢键化并不理想。羰基区中多重氢键化谱带的存在已得到确认，这些谱带的摩尔吸光系数差别不大，适宜于氢键化分析。用醚键区来分析ＰＵ的氢键化要慎重。由于多重氢键化谱带的存在，ＰＵ中的氢键解离平衡必然是一个多步平衡过程，求取氢键解离平衡的热力学参数采用的单步解离平衡模型过于简单，在今后的研究中应加以改进。
The infrared band assignment and quantitative analysis of hydrogen bonding in plyurethanes were reviewed with 25 references.The basic bands with relation to hydrogen bonding in NH and C=O stretching regions were assigned definitely.The complexities in these spectral regions were shown in some research works recently.Ir was not suitable to analyze hydrogen bonding by using NH stretching region because the features of this region were many band numbers,serious band overlap and large variable absorptivity coefficients with band frequency.There were least three bands in carbonyl stretching region. The variation of absorptivity coefficient was small so that it was suitable to analyze hydrongen bonding in carbonyl region.It should be handled with discretion to study hydrogen bonding by using ether stretching region.Although an equilibrium with single step dissociation was widely used in investigating thermodynamics of hydrogen bonding ,a reasonable equilibrium of multistep dissociation was suggested because of the existence of disordered carbonyl groups.