J. Phys. IV France
Volume 129, October 2005
Page(s) 29 - 32

J. Phys. IV France 129 (2005) 29-32

DOI: 10.1051/jp4:2005129007

Structural aspects and molecular dynamics of liquid polymers, including mixtures with water

E. Hanke and U. Kaatze

Drittes Physikalisches Institut, Georg-August-Universität, Bürgerstr. 42-44, 37073 Göttingen, Germany

Acoustical attenuation spectra, measured between 100 kHz and 2 GHz, are reported for liquid polyethylene glycol and polyethylene glycol dimethylether samples with different lengths of the molecules. For one polyethylene glycol the effect of different amounts of added water upon the spectra is also considered. The spectra reveal two principal relaxation regions. Suitable analytical descriptions of these relaxations are presented and the parameters of the relevant functions are briefly discussed in the light of structural and conformational isomerizations of the polymers.

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