The interdiffusion coefficient in two-component polymeric mixtures
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چکیده
2014 Starting from the Liouville equation we derive equations for density and concentration fluctuations in two-component polymeric liquids. An exact expression for the interdiffusion coefficient is obtained. As examples we consider mixtures of labelled molecules and the case of polymers solved in a low molecular weight liquid. The relation of the general formula to two widely used approximate formulas is discussed. J. Phys. France 49 (1988) 1261-1270 JUILLET 1988, Classification Physics Abstracts 05.60 66.10
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تاریخ انتشار 2016