红外光谱法研究离聚体中离子聚集状态

Infrared Spectra Investigation of Local Structure in Ionomer

红外光谱法研究离聚体中离子聚集状态冯克，高洪涛，李卓美，阎荣江（中山大学高分子研究所，广州，５１０２７５）（中国科学院长春应用化学研究所）关键词离聚体，红外光谱，离子聚集离聚体是指含有１５ｍｏｌ％以下离子基团的聚合物，依离子含量高低，离子聚集状态分为...

Infrared spectra of a series of zinc,sodium and copper salts of sulfonated isoprene-isobutylene rubber(SIIR) ionomer with varying sulfonation levels have been investigated.It has been found that v_(sym) of sulfonate group obviously increased with ion concentration for the samples containing the ionic aggregates termed clusters,but did not change with ion concentration for the samples containing only the ionic aggregates termed multiplets.It is suggested that the ionic aggregate in clusters contains more ion pairs than that in multiplets.The dependence of the vibrational band of on ion concentration in ionomer can be considered as the spectroscopic feature characterstic of cluster formation.