Abstract
An analytical procedure is described for the rapid qualitative analysis of polyurethane elastomers, based on polycaprolactonediols (CAPA). These thermoplastic polyurethanes are a complex reaction product of an isocyanate-terminated linear CAPA-based polyester prepolymer, extended with a 1,4-butanediol chain extender. The polymer is cleaved into the corresponding diamine, polyether, 6-hydroxycaproic acid, and 1,4-butanediol fragments by alkali fusion at high temperature. The fragments formed were analysed by gas and size-exclusion chromatography, after separation and derivatization. The polyethers were further cleaved into the corresponding polyol acetates by using a mixed anhydride reagent, before the gas chromatographic analysis.
Published Version
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