The Properties of Water in Polymeric Membranes.
HYDRONAUTICS INC LAUREL MD
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The relative amounts of freezing and non-freezing water in various water-wet cellulose acetate CA membranes have been determined by NMR techniques, from the initial heights of the water component in the free induction decay NMR intensity. Measurements on the first desorption-adsorption cycle of wet CA membranes have also been performed. The solubility and the diffusivity of water and of NaCl in a fully aromatic polyamide PA film also have been determined. From these the intrinsic permeability characteristics of this polymer have been calculated and its suitability for desalination by reverse osmosis is compared to that of the commonly used cellulose acetate.
- Atomic and Molecular Physics and Spectroscopy