|Title:||Diffusivity of solvent in a polymer solution-expansive free volume effect||Authors:||Hsu J.-P.
|Keywords:||Diffusivity of solvent;Expansive free volume;Fujita-Doolittle equation;Retardation effect;Thermal expansive coefficient||Issue Date:||2005||Journal Volume:||41||Journal Issue:||5||Start page/Pages:||1036-1042||Source:||European Polymer Journal||Abstract:||
The concentration dependency of the diffusivity of a solvent in a polymer solution is derived on the basis of a free volume theory. Applying a molecular kinetics approach, the Fujita-Doolittle equation is modified. The result of numerical simulation reveals that the diffusivity of solvent in a polymer solution depends largely on both the polymer chain structure and its concentration. The applicability of the analytical expression derived is justified by fitting the experimental data for n-alkyl acetate-(poly-methyl acrylate) polymer solutions in the literature. ? 2004 Elsevier Ltd. All rights reserved.
|Appears in Collections:||化學工程學系|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.