ISSN:
0449-2951
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The synthesis of two new ion-exchange membranes is presented. These are a partially sulfonated polystyrenesulfonic acid resin and an interpolymer system composed of sulfonated polystyrene-divinylbenzene polymerized within a poly(vinylidene fluoride) matrix. Each of these systems allows control of ion exchange capacity and physical properties over a wide range. The second is especially useful, in that ion-exchange capacity and swelling characteristics may be controlled independently. It also has the distinct advantage of giving a clear, flexible film even with high crosslinking. On the basis of certain simplifying assumptions an equation is derived which permits approximate calculation from equilibrium water uptake data of an elastic constant which measures the resistance of the membrane to swelling forces. Equilibrium water content data for the two membrane systems are treated with this equation and analyzed in terms of internal structure.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1965.100030415
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