ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Cellulose grafted with vinyl monomers in a dimethyl sulfoxide-paraformaldehyde solvent system was used as membrane materials. The states of water in the membranes swollen in aqueous solutions of NaCl, raffinose, and poly(ethylene glycol) (PEG) were investigated. The amounts of total water and freezing water for the solution-swollen membranes hardly depended on the kind of solutions and were similar to those for the water-swollen membranes. The free water contents for the solution-swollen membranes were different from those for the water-swollen membranes. Apparent activation energies for diffusive permeation of solutes through the membranes were measured. A poor permeability of PEG through the membranes was consistent with a large activation energy for permeation of PEG through them.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1990.070401115
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