% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{deGans:32997,
author = {de Gans, B.-J. and Wiegand, S. and Luettmer-Strathmann, J.},
title = {{U}nusual {T}hermal {D}iffusion in {P}olymer {S}olutions},
journal = {Physical review letters},
volume = {91},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-32997},
pages = {245501-4},
year = {2003},
note = {Record converted from VDB: 12.11.2012},
abstract = {Thermal diffusion forced Rayleigh scattering results on
thermal diffusion of poly(ethylene oxide) (PEO) in
ethanol/water mixtures are presented. In water-rich solvent
mixtures, PEO is found to migrate towards regions of lower
temperature. This is typical for polymer solutions and
corresponds to a positive Soret coefficient of PEO. In
solvent mixtures with low water content, however, the
polymer is found to migrate towards higher temperatures,
corresponding to a negative Soret coefficient of PEO in
ethanol-rich solutions. To our knowledge, this is the first
observed sign change of the Soret coefficient of a polymer
in solution. We also present a simple lattice model for the
polymer solvent system and calculate Soret coefficients with
statistical mechanics methods. The calculated values agree
qualitatively with the experimental results.},
keywords = {J (WoSType)},
cin = {IFF-WM},
ddc = {550},
cid = {I:(DE-Juel1)VDB36},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK242},
shelfmark = {Physics, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000187202000041},
doi = {10.1103/PhysRevLett.91.245501},
url = {https://juser.fz-juelich.de/record/32997},
}