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Transport properties of cellulose acetate osmotic membranes

Transport properties of cellulose acetate osmotic membranes Diffusion and distribution coefficients of water and sodium chloride have been measured in cellulose acetate osmotic membranes. These coefficients have been found to vary with the degree of acetylation of the cellulose ester. The diffusion coefficient of water varies from 5.7 × 10−6 to 1.3 × 10−6 cm.2/sec., and the diffusion coefficient of salt varies from 2.9 × 10−8 to 3.9 × 10−11 as the acetyl content is increased from 33.6 to 43.2 wt.‐%. A homogeneous diffusion model is proposed which describes the observations in terms of Fick's law. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Polymer Science Wiley

Transport properties of cellulose acetate osmotic membranes

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Publisher
Wiley
Copyright
Copyright © 1965 John Wiley & Sons, Inc.
ISSN
0021-8995
eISSN
1097-4628
DOI
10.1002/app.1965.070090413
Publisher site
See Article on Publisher Site

Abstract

Diffusion and distribution coefficients of water and sodium chloride have been measured in cellulose acetate osmotic membranes. These coefficients have been found to vary with the degree of acetylation of the cellulose ester. The diffusion coefficient of water varies from 5.7 × 10−6 to 1.3 × 10−6 cm.2/sec., and the diffusion coefficient of salt varies from 2.9 × 10−8 to 3.9 × 10−11 as the acetyl content is increased from 33.6 to 43.2 wt.‐%. A homogeneous diffusion model is proposed which describes the observations in terms of Fick's law.

Journal

Journal of Applied Polymer ScienceWiley

Published: Apr 1, 1965

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