Temperature dependence of melt viscosity of polymers
β Scribed by V. E. Dobrescu; C. Radovici
- Publisher
- Springer
- Year
- 1983
- Tongue
- English
- Weight
- 254 KB
- Volume
- 10-10
- Category
- Article
- ISSN
- 0170-0839
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π SIMILAR VOLUMES
The zero-shew viscosity r)o of five epoxy resins were analyzed on the basis of the free volume concept. The experimental data, spanning at least six decades in viscosity, were linearized by means of a viscosity-temperaturerelation~ = q,,(T),derivedbyUtracki a few years earlier. The linearization ena
## Abstract A general model for all kinds of sizeβdependent melting points, free of any adjustable parameter, is extended to illustrate the sizeβdependence of the melting temperature of polyethylene (PE). The model prediction for the depression of the melting temperature of PE is consistent with th
Based on the free volume concept and the equation by Doolittle, an empirical equation is offered for the flow activation energy, E\*, for polymer melts for the range of over 150Β°C above glass transition temperature, Tg. This E\* represents the temperature coefficient of viscosity for the Newtonian r