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000015469 084__ $$2WoS$$aChemistry, Physical
000015469 084__ $$2WoS$$aPhysics, Atomic, Molecular & Chemical
000015469 1001_ $$0P:(DE-Juel1)VDB2951$$aKlein, M.$$b0$$uFZJ
000015469 245__ $$aThe Soret effect of mono-, di- and tri-glycols in ethanol
000015469 260__ $$aCambridge$$bRSC Publ.$$c2011
000015469 300__ $$a7090 - 7094
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000015469 440_0 $$04916$$aPhysical Chemistry Chemical Physics$$v13$$x1463-9076$$y13
000015469 500__ $$aWe would like to thank Pablo Blanco and Bastian Arlt for many fruitful discussions and Hartmut Kriegs for technical support. Financial support due to the Deutsche Forschungsgemeinschaft grant Wi 1684 is gratefully acknowledged.
000015469 520__ $$aWe employed thermal diffusion forced Rayleigh scattering (TDFRS) to investigate the chain length dependence of the thermal diffusion behavior of short glycols in ethanol. We studied three glycols, monoethylenglycol (MEG), diethylenglycol (DEG) and triethylenglycol (TEG), in an ethanol solution. In contrast to the polymer polyethylenglycol, the shorter glycols used within the framework of this study are completely soluble in ethanol, at least for low molar fractions. In order to guarantee a good solubility of the glycols, the measurements were limited to molar fractions of 10% and 20%. As the different glycols only differ by their chain length it will be possible to deduce its influence on the thermal diffusion properties. Due to the fairly short persistence length of the glycols, D(T) reaches already for the dimer a plateau value. This finding agrees with simulation results. Furthermore, the thermal expansion and the kinematic viscosity are measured to investigate if empirical correlations seen for other systems could be confirmed.
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000015469 7001_ $$0P:(DE-Juel1)131034$$aWiegand, S.$$b1$$uFZJ
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000015469 8567_ $$uhttp://dx.doi.org/10.1039/c1cp00022e
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