THE INFLUENCE OF COHESIVE FORCES ON THE GLASS TRANSITION TEMPERATURES OF POLYMERS.
Abstract
The relationship between cohesive energy (c.e.) or cohesive energy density (c.e.d.) and the glass transition temperature T sub G of polymers was re-examined on the basis of literature data. For polymers with T sub G's above 25 C there is no correlation between published or calculated values of c.e. or c.e.d. and T sub G. However, for the rest of the polymers there is a linear relationship between c.e.d. and T sub G, and a broad relationship between c.e. and T sub G. These results imply that c.e.d. is the regulating, though not the only, factor in determining T sub G's up to values of approximately 25 C. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1965
- Accession Number
- AD0468940
Entities
People
- J. H. Sewell
- W. A. Lee
Organizations
- Royal Aircraft Establishment