Dégradation controlée des polyisoprènes‐1,4 par le couple phénylhydrazine/oxygène, 2. Molécules modèles de structures phénylhydrazone non‐conjuguées d'extrémités de chaîne

Abstract

AbstractWith regard to the postulated intervention of phenylhydrazone structures during the degradation of 1,4‐polyisoprenes by the phenylhydrazine (1)/oxygen system, UV, 1H NMR, 13C NMR and mass spectroscopy as well as steric exclusion chromatography were applied for the characterization of model phenylhydrazones deriving from non conjugated carbonyl derivatives. Comparison of the results with some possible coexistent structural parameters gave some indications on the validity of these analytical tools for the identification of phenylhydrazone structures in oxidized polyisoprene.