Viscosity Effects in the Radiation-Induced Grafting of Vinyl Monomers on Polyvinylchloride Films.
Abstract
Radiation-induced grafting rates of styrene on polyvinylchloride (PVC) film were measured in a series of runs at various styrene concentrations, while holding constant the Hildebrand solubility parameter of the grafting solution, and therefore theoretically also holding internal film viscosity constant. The results show rate apparently proportional to the first power of styrene concentration. The rate data are compared and contrasted with those obtained in earlier grafting studies by Takamatsu on styrene/PVC. The rate of acrylonitrile grafting on PVC film was also measured, and overall grafting rates for styrene/PVC and acrylonitrile/PVC are compared on the basis of the calculated values of rates of initiation, rates of propagation, internal monomer concentrations, and rates of termination. Internal film viscosities for several monomer/polymer systems were estimated using an equation derived by Smoluchowski, and the relation between internal film viscosity and the rate of termination by macroradical interaction is discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1976
- Accession Number
- ADA026822
Entities
People
- J. E. Wilson