Negative thermodiffusion of polymers and colloids in solvent mixtures
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چکیده
منابع مشابه
Negative thermodiffusion of polymers and colloids in solvent mixtures
Results on thermodiffusion of poly~ethylene oxide! and colloidal boehmite (g-AlOOH! rods in ethanol/water mixtures are presented. Data were obtained using thermal diffusion forced Rayleigh scattering. The sign of the Soret coefficient of the boehmite rods changes from positive to negative with increasing water content, i.e., at sufficiently high water content the colloidal particles move to hig...
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15 صفحه اولThermodiffusion of charged colloids: single-particle diffusion.
An expression for the single-particle thermal diffusion coefficient of a charged colloidal sphere is derived on the basis of force balance on the Brownian time scale in combination with thermodynamics. It is shown that the single-particle thermal diffusion coefficient is related to the temperature dependence of the reversible work necessary to build the colloidal particle, including the core, t...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 2003
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.1563601