This title appears in the Scientific Report :
2008
Please use the identifier:
http://hdl.handle.net/2128/3010 in citations.
Please use the identifier: http://dx.doi.org/10.1063/1.2816136 in citations.
The effect of intramolecular relaxations on the damping of longitudinal and transverse phonons in polysiloxanes studied by Brillouin spectroscopy
The effect of intramolecular relaxations on the damping of longitudinal and transverse phonons in polysiloxanes studied by Brillouin spectroscopy
The effect of intramolecular relaxations on the damping of longitudinal and transverse phonons was studied in poly(methylphenylsiloxane) (PMPS) and poly(ethylmethylsiloxane) (PEMS) polymers by means of Brillouin spectroscopy. It is shown that studies of the polarized and depolarized Brillouin spectr...
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Personal Name(s): | Kriegs, H. |
---|---|
Meier, G. / Gapinski, J. / Patkowski, A. | |
Contributing Institute: |
Weiche Materie; IFF-7 |
Published in: | The @journal of chemical physics, 128 (2008) S. 014507 |
Imprint: |
Melville, NY
American Institute of Physics
2008
|
Physical Description: |
014507 |
PubMed ID: |
18190204 |
DOI: |
10.1063/1.2816136 |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Journal of Chemical Physics
128 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1063/1.2816136 in citations.
The effect of intramolecular relaxations on the damping of longitudinal and transverse phonons was studied in poly(methylphenylsiloxane) (PMPS) and poly(ethylmethylsiloxane) (PEMS) polymers by means of Brillouin spectroscopy. It is shown that studies of the polarized and depolarized Brillouin spectra as functions of temperature and pressure allow for the separation of the contributions of the internal and structural relaxations to the damping of longitudinal and transverse phonons, respectively. In polymers with intramolecular relaxations these processes contribute not only to the damping of longitudinal phonons, according to theoretical predictions, but also transverse phonons, in contradiction to the theory. |