Hydrolysis rate constants and activation parameters for phosphate- and phosphonate-bridged phthalonitrile monomers under acid, neutral and alkali conditions

oleh: Kirill S. Belsky, Artem V. Sulimov, Boris A. Bulgakov, Alexandr V. Babkin, Alexey V. Kepman

Format: Article
Diterbitkan: Elsevier 2017-08-01

Deskripsi

Hydrolysis data for Bis(3-(3,4-dicyanophenoxy)phenyl) phenyl phosphate and Bis(3-(3,4-dicyanophenoxy)phenyl) phenylphosphonate under pH 4, 7 and 10 are presented. Conversion/time plots collected by HPLC analysis, typical chromatograms and NMR spectra of the reactions products are given. Pseudo-first order rate constants are determined for both substrates at 25, 50 and 80 °C. Activation parameters were calculated from Arrhenius equation. Keywords: Hydrolysis, Phthalonitrile, Phosphoric ester, Phosphonic ester, Rate constant, Activation energy