Enthalpy relaxation studies in isotactic polystyrene. Effects of crystallinity
β Scribed by Constantinos Tsitsilianis; Efthymios P. Bokaris
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 362 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0170-0839
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## Abstract We studied the formation and relaxation of precursors of shishβkebab in isotactic polystyrene after applying pulse shear flow at temperatures above the nominal melting temperatures __T__~m~ (=223 Β°C). It was found that the stringβlike objects that were assigned to precursors in a previo
The melt crystallization process of isotactic polystyrene ( i-PS) was studied by means of in situ Fourier transform infrared (FTIR) spectroscopy, with a focus on the conformational changes during the induction period. The spectra obtained during the induction period suggested the occurrence of some