Semi-permeable membranes and method of production
Abstract
Abstract AN IMPROVED HETEROGENOUS SEMI-PERMEABLE MEMBRANE MADE BY THE PROCESS OF FORMING THE MEMBBRANE FROM A SOLUTION OF SUITABLE POLYMERIC BINDER AND AN INORGANIC SALT AND LIXIVIATING THE FILM TO REMOVE THE INORGANIC SALT FROM E BINDER MATRIX. THE FILM PRIOR TO LIXIVIATION, MAY CONTAIN UP TO 80% BY WEIGHT OF THE BINDER OF INORGANIC SALT. SUITABLE ION EXCHANGE MATERIAL MAY BE DISPERSED THROUGHOUT THE MEMBRANCE TO GIVE PERMSELECTIVE CHARACTER- ISTICS THERETO. MEMBRANES MADE ACCORDING TO THIS METHOD EXHIBIT RESISTANCE TO ORGANIC AND INORGANIC FOULING AND THUS MAY BE USED AT HIGHER CURRENT DENSITIES. IN ADDITION, MEMBRANES MADE ACCORDING TO THIS METHOD ARE CHARACTERIZED BY RELATIVELY LOW AREAL RESISTANCE.
Inventors
- 👤 A Heit
Bibliographic Details
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