NDLI: Longitudinal Structural Relaxation of Highly Viscous Liquid: Tetraethylene Glycol

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Longitudinal Structural Relaxation of Highly Viscous Liquid: Tetraethylene Glycol

Content Provider	Scilit
Author	Noudou, Takaaki Matsuoka, Tatsuro Koda, Shinobu Koda Shinobu Nomura, Hiroyasu Nomura Hiroyasu
Copyright Year	1996
Description	Journal: Japanese Journal of Applied Physics The sound velocities of tetraethylene glycol over the frequency range from 100 MHz to 10 GHz and in the temperature range from 243 to 313 K were measured by Brillouin scattering and high-resolution Bragg reflection methods. Velocity dispersion, which is attributed to structural relaxation, was observed for the frequencies investigated here. The relaxation curves represented by the longitudinal reduced storage modulus were well explained by a double relaxation. The relaxation strength of the fast process decreased with decreasing temperature. The fast process disappeared around 260 K. The relaxation times of the fast process obeyed the Arrhenius law, while the temperature dependence of the relaxation times of the slow process showed non-Arrhenius behavior.
Related Links	http://iopscience.iop.org/article/10.1143/JJAP.35.2944/pdf
ISSN	00214922
e-ISSN	13474065
DOI	10.1143/jjap.35.2944
Journal	Japanese Journal of Applied Physics
Issue Number	5S
Volume Number	35
Language	English
Publisher	IOP Publishing
Publisher Date	1996-05-01
Access Restriction	Open
Subject Keyword	Journal: Japanese Journal of Applied Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Engineering

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