High performance, quality controlled bipolar membrane

Details High performance, quality controlled bipolar membrane High performance, quality controlled bipolar membrane

1976-05-24

1977-11-08

Edmundson, F.C.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C25B 1308

Patent

active

040574814

ABSTRACT:
Improved novel single film bipolar membranes having an ion selectivity above 80% in an electrolyte medium of about one mole, are prepared containing a relatively high amount, i.e. at least 15% of an insoluble cross-linked aromatic polymer. Before the styrenated sheet is chemically functionalized, the film surface is specifically treated, i.e. cleaned to make it more receptive to functional groups, so that the cationic-exchange groups and anion-exchange groups can be introduced homogeneously from each side of the surface-cleaned film, and a single-film bipolar membrane of superior durability, stability, and quality control results.

REFERENCES:
patent: 3388080 (1968-06-01), de Korosy et al.
patent: 3868314 (1975-02-01), Mizutoni et al.
patent: 3887499 (1975-06-01), Hodgdon

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