Effect of crosslinks on the glass transition temperature of end-linked elastomers Academic Article uri icon

abstract

  • Changes in the glass transition temperature of end-linked networks as a result of the cure process have been studied by examination of a series of stoichiometrically imbalanced PDMS networks covering a wide range of stoichiometric ratio values. The data were compared to existing theories in an effort to resolve the question of cross-link contribution to TB'The results support the notion based on the Gibbs-DiMarzio theory that elastically effective junctions rather than any branch point dominate the contribution of cross-links to Tg. It haa also been shown that existing theories are capable of predicting cure-related changes in Tg for a variety of cross-linked systems.

publication date

  • January 1, 1992