Infrared Spectra Investigation of Local Structure in Ionomer

Abstract

Abstract: 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 v_sym 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 SO₃^- on ion concentration in ionomer can be considered as the spectroscopic feature characterstic of cluster formation.

Key words: Ionomer, Infrared spectrum, Ion aggregation

TrendMD:

FENG Ke, GAO Hong-Tao, LI Zhuo-Mei, YAN Rong-Jiang. Infrared Spectra Investigation of Local Structure in Ionomer[J]. Chem. J. Chinese Universities, 1994, 15(7): 1097.

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Infrared Spectra Investigation of Local Structure in Ionomer

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