Accession Number : ADA310348
Title : 'Living' Cationic Polymerization of Phosphoranimines as an Ambient Temperature Route to Polyphosphazenes with Controlled Molecular Weights.
Descriptive Note : Technical rept.,
Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF CHEMISTRY
Personal Author(s) : Allcock, H. R. ; Crane, C. A. ; Morrissey, C. T. ; Nelson, J. M. ; Reeves, S. D.
PDF Url : ADA310348
Report Date : 14 JUN 1996
Pagination or Media Count : 42
Abstract : A new method for the synthesis of poly(dichlorophosphazene) at ambient temperatures is described. The molecular weight of poly(dichlorophosphazene) was controlled by altering the ratio of monomer to initiator. The polymer chains were found to be active after chain propagation since further addition of monomer resulted in the formation of higher molecular weight polymer. Integration of (1)H and (31)P NMR spectra of these reactions revealed that the polymerization follows first order reaction kinetics with respect to monomer concentration.
Descriptors : *CATIONS, *POLYMERIZATION, *MOLECULAR WEIGHT, *PHOSPHAZENE, PROPAGATION, TEMPERATURE, REACTION KINETICS, SYNTHESIS, POLYMERS, CHAINS, ORGANIC COMPOUNDS, MONOMERS, CONCENTRATION(CHEMISTRY), INORGANIC COMPOUNDS.
Subject Categories : Polymer Chemistry
Atomic and Molecular Physics and Spectroscopy
Distribution Statement : APPROVED FOR PUBLIC RELEASE