Solvent effects on the coupling processes of polystyryl radicals
- 15 October 1973
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 59 (8) , 3937-3939
- https://doi.org/10.1063/1.1680581
Abstract
The molecular weight distributions of polystyrene prepared in various solvents at 60 °C showed broadening with increasing solventviscosity, whereas the effects of solvent power were not conspicuous. Simulations of polymerization reactions with several models showed that the coupling probability of polystyryl radicals is not independent of chain length at 60 °C and that the chain length dependence becomes apparent with increasing solventviscosity. These results were discussed in terms of the dynamical behavior of polymer radicals in solution and it was tentatively concluded that the chain length dependence of coupling probability of polystyryl radicals originates mainly from the hydrodynamic interactions between polymer segments.Keywords
This publication has 9 references indexed in Scilit:
- Fast Reaction and Micro-Brownian Motion of Flexible Polymer Molecules in SolutionPolymer Journal, 1973
- Solvent effects on the free radical polymerization of styreneJournal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1973
- Chain Length Dependence of Coupling Reaction of Polystyryl RadicalsThe Journal of Chemical Physics, 1972
- Computer Simulation of the Polymerization of Styrene. The Mechanism of Thermal Initiation and the Importance of Primary Radical TerminationMacromolecules, 1970
- Dynamic Mechanical Properties of Dilute Polystyrene Solutions; Dependence on Molecular Weight, Concentration, and Solvent1The Journal of Physical Chemistry, 1964
- The Kinetics of Free Radical Polymerization under Conditions of Diffusion-controlled TerminationJournal of the American Chemical Society, 1962
- Diffusion-controlled termination during the initial stages of free radical polymerization of methyl methacrylateTransactions of the Faraday Society, 1961
- A Simple Dilatometric Method of Determining the Rate Constants of Chain Reactions. II. The Effect of Viscosity on the Rate Constants of Polymerization Reactions1Journal of the American Chemical Society, 1959
- Rate Constants in Free Radical Polymerization. III. Styrene1Journal of the American Chemical Society, 1951