The relationship between semicrystalline morphology and glass transition temperature has been investigated for solvent-crystallized poly(ether ether ketone) (PEEK) and poly(ether ketone ketone) (PEKK). Solvent-crystallized specimens of both PEEK and PEKK displayed a sizeable positive offset in T g c
Relationships between melting temperature, maximum crystallization temperature and glass transition temperature
β Scribed by Norimasa Okui
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 290 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0032-3861
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On the basis of microhardness (H) data measured at room temperature only for a number of polymers in the glassy state, a linear correlation between H and the glass transition temperature T g has been found (H Ο 1.97T g Οͺ 571). By means of this relationship, the deviation of the H values from the add
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