An equation, based on thermodynamic considerations to relate the glass transition temperature, T g , to compositional variation of a polymer system, is adapted in this article for modeling the T g vs. fractional conversion ( x) relationship of reactive thermosetting systems. Agreement between the ad
Relationships between glass transition temperature and conversion
โ Scribed by J. P. Pascault; R. J. J. Williams
- Publisher
- Springer
- Year
- 1990
- Tongue
- English
- Weight
- 270 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0170-0839
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๐ SIMILAR VOLUMES
## Abstract Owing to enthalpy relaxation, values of the glass transition temperature (__T__~__g__~) for partially reacted polymers may depend on the thermal history of samples and the heating rate used for measurements. Use of theoretical relations between __T__~__g__~ and the extent of reaction (_
Polycyclotrimerization of 4,4ะ-thiodiphenylcyanate was adopted as a model system for general thermosetting polymers for studying the relationship between the glass-transition temperature (T g ) and conversion (โฃ) during network formation. Existing expressions for T g -โฃ relationship were used and co