Abstract
An analytical procedure is described for rapid qualitative analysis of medical-grade polyether-based polyurethane elastomers. The elastomers are conventionally the complex reaction product of an isocyanate-terminated linear polyether prepolymer with either a diamine or a diol chain extender. The polymer is cleaved into the corresponding diamine, polyether, diol, or hydrocarbon by molten alkali fusion at high temperature. These fragments are analysed by gas and gel-permeation chromatography, after separation by a liquid—liquid extraction procedure. Polyethers are further cleaved into the corresponding polyol acetates by using a mixed anhydride reagent, before gas chromatographic analysis.
Published Version
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