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Evolution of the Dynamics in 1,4-Polyisoprene from a Nearly Constant Loss to a Johari−Goldstein β -Relaxation to the α -Relaxation

✍ Scribed by Roland, C. M.; Schroeder, M. J.; Fontanella, J. J.; Ngai, K. L.

Book ID
126993118
Publisher
American Chemical Society
Year
2004
Tongue
English
Weight
88 KB
Volume
37
Category
Article
ISSN
0024-9297

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The nearly constant loss, Johari-Goldste
The nearly constant loss, Johari-Goldstein β-relaxation, and α-relaxation of 1,4-polybutadiene
✍ Maria J. Schroeder; Kia L. Ngai; C. Michael Roland 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 344 KB

## Abstract From high‐resolution dielectric spectroscopy measurements on 1,4‐polybutadiene (1,4‐PB), we show that in addition to the structural α‐relaxation and higher frequency secondary relaxations in the spectra, a nearly constant loss (NCL) is observed at shorter times/lower temperatures. The p