Accession Number:

AD0751605

Title:

The Properties of Water in Polymeric Membranes.

Descriptive Note:

Technical rept.,

Corporate Author:

HYDRONAUTICS INC LAUREL MD

Report Date:

1972-09-01

Pagination or Media Count:

57.0

Abstract:

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.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE