The structure of cellulose acetate membranes II. The physical and transport characteristics of the porous layer of anisotropic membranes
β Scribed by R. Matz
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 578 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0011-9164
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π SIMILAR VOLUMES
## Abstract Differential scanning calorimetric melting endotherms of wet and halfβdried cellulose acetate membranes and salt distribution coefficients were studied to clarify the states of water in membranes. We have suggested that (a) there are four states of water in cellulose acetate membranes;
A two-stage method of making semi-permeable high flux reverse osmosis membranes was developed using water-ethanol mixtures to precipitate the cellulose acetate. This eliminated the need for heat treatment and produced membranes with fluxes up to 5 m'/m2 day and sodium chloride rejections up to 85 %