✦ LIBER ✦

The dielectric relaxation of supercooled ethyleneglycol-water mixtures

✍ Scribed by Seiichi Sudo; Naoki Shinyashiki; Shin Yagihara

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 497 KB
Volume: 90
Category: Article
ISSN: 0167-7322
DOI: 10.1016/s0167-7322(01)00113-1

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✦ Synopsis

Broadband dielechic m easlmzmenls for 60,70, aud 80 wt% ethyleneglycol-water mktures were performed in the fkquency mnge of 0.1 mHz-30 GHz and in the temperature muge of 1405 K-298.0 K. ~~lowertemperaturerwge~Orof6oand7o~,sepatationofthe~-pFocess~aprocess occuned. The glass transition temperature depended on the water content for the a -process but tkgility did not. The peak fkquency of the l3-process depended on the water content. The f3process exhibiting larger activation energy at the lower frequency was caused by the large cooperative rearranging region constructed by strongly interacting molecules through hydrogenbond.

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