Molecular-Weight Dependent Thermal Diffusion in Dilute Polymer Solutions
نویسندگان
چکیده
منابع مشابه
Molecular-weight dependent thermal diffusion in dilute polymer solutions.
Thermal diffusion of high polymers in a continuous medium is independent of the molecular weight Mw. Accounting for the solvent molecular structure and the Brownian motion of the solute, we derive an additional contribution of opposite sign which is significant for short chains but vanishes as Mw-->infinity. Our findings explain the dependence on Mw observed recently for polystyrene, and its in...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2009
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.102.078302