Thin film polymer blend membranes

Details Thin film polymer blend membranes Thin film polymer blend membranes

1985-08-13

1987-11-10

Spear, Frank

Gas separation

Means within gas stream for conducting concentrate to collector

210490, 264185, B01D 1300

Patent

active

047055456

ABSTRACT:
Gas separation membranes comprising an inorganic compound-organic polymer blend may be prepared by admixing an organic polymer such as poly(vinyl alcohol) with a phosphoric acid or sulfuric acid in a mutually miscible solvent. After allowing the mixture to proceed for a period of time sufficient to form a blend, the solution may be cast on an appropriate casting surface and, after the solvent has been evaporated, the desired membrane which may have a thickness of from about 0.1 to about 100 microns, is recovered.

REFERENCES:
patent: 4071454 (1978-01-01), Yamamoto et al.
patent: 4264676 (1981-04-01), Uzumaki et al.
patent: 4500667 (1985-02-01), Polak et al.
patent: 4609468 (1986-09-01), Cramm

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