A Modified Vrentas-Duda Model for the Correlation of the Solvent Self-Diffusion Coefficients in Polymer Solutions.
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- Zhong Chongli
- Department of Chemical Engineering, PO Box 100, Beijing University of Chemical Technology
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- Yang Chunsheng
- Department of Chemical Engineering, PO Box 100, Beijing University of Chemical Technology
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- Qu Yixin
- Department of Chemical Engineering, PO Box 100, Beijing University of Chemical Technology
Bibliographic Information
- Other Title
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- Modified Vrentas Duda Model for the Correlation of the Solvent Self Diffusion Coefficients in Polymer Solutions
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Abstract
A new expression for the specific hole free volume in the Vrentas–Duda (VD) model was proposed, and a modified VD model was developed for the correlation of the solvent self-diffusion coefficients in polymer solutions. The new model gives better correlation for the finite concentration solvent self-diffusion coefficients than the VD model, which also shows better predictions for the infinite dilution solvent self-diffusion coefficients than the latter. The modified VD model takes into account the pressure effects on diffusion coefficients through the pressure dependence of the specific volumes from an existing equation of state, which can be used to predict the pressure dependence of diffusion coefficients with the parameters obtained from atmospheric pressure diffusivity data.
Journal
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- Polymer Journal
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Polymer Journal 33 (11), 842-848, 2001
The Society of Polymer Science, Japan
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Details 詳細情報について
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- CRID
- 1390282681265809152
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- NII Article ID
- 130004430271
- 10010078108
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- NII Book ID
- AA00777013
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- COI
- 1:CAS:528:DC%2BD3MXos1OhtLk%3D
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- ISSN
- 13490540
- 00323896
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- NDL BIB ID
- 5985177
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed