Spectroscopic investigation of the hydrolysis of γ-glycidoxypropylsilane bound to silica surfaces

G. R. Bogart, D. E. Leyden, T. M. Wade, W. Schafer, P. W. Carr

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Chemically modified silica gels were prepared under various conditions with γ-glycidoxypropyltrimethoxysilane in order to investigate the effect of various methods of hydrolyzing the terminal epoxide group. The silylated substrates were then examined by 13C solid-state NMR with cross-polarization and magic angle spinning. NMR results were correlated with infrared results obtained by diffuse reflectance Fourier transform infrared spectroscopy. By reaction with a primary alkyl amine the percentage of unopened epoxide may be determined by Fourier transform infrared spectroscopy. Infrared data indicate that as little as 10% epoxide remaining after attempted hydrolysis can influence chromatographic capacity factors.

Original languageEnglish (US)
Pages (from-to)209-219
Number of pages11
JournalJournal of Chromatography A
Volume483
Issue numberC
DOIs
StatePublished - 1989

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