Study of Reaction Kinetics and Development of Elastic Properties in Network Polymerization Systems by the Impulse Technique.
MASSACHUSETTS UNIV AMHERST DEPT OF POLYMER SCIENCE AND ENGINEERING
Pagination or Media Count:
The total impulse approach to linear viscoelasticity developed by Farris has been extended to the study of kinetics of network formation and development of mechanical properties in nonlinear polymerization reactions. A single experiment permits kinetic data and absolute measurements of viscosity and elastic parameters to be obtained during the elevation of a reacting system from a liquid to a glassy or rubber network. The method was applied to the cure of an epoxi-amine system at different temperature to obtain kinetic information gel times, viscosities and elastic parameters. Theoretical predictions of pre-gel and post-gel relations are in good agreement with the observed experimental values. Author
- Polymer Chemistry