Membrane composition and method of preparation

Details Membrane composition and method of preparation Membrane composition and method of preparation

1997-01-31

1999-09-21

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21050041, 21050042, 95 43, 95 5, 96 4, 264 48, 264 49, B01D 1500

Patent

active

059549661

ABSTRACT:
The present invention relates to membranes useful in the separation of water from a solution containing volatile organic compounds and water. The membranes may be used in dehydrating an organic/water mixture to purify an organic when an organic is of interest or, alternatively, producing pure water from an organic/water mixture when clean water is of interest. The membranes include a hydrophilic base polymer, an optional pore-forming polymer and a surface modifying macromolecule (SMM) which imparts surface hydrophobicity to the membrane.

REFERENCES:
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patent: 5232600 (1993-08-01), Degen et al.
patent: 5286279 (1994-02-01), Wu
patent: 5756632 (1998-05-01), Ward et al.
Bakish Materials Corporation, "Proceedings of Seventh International Conference on Pervaporation Processes in the Chemical Industry", Reno, Nevada, Feb. 26-Mar. 1, 1995.
Mahmud, Hassan, "Development of Pervaporation Membrane for Volatile Organic Chemical Removal", Thesis, Master of Applied Science in Environmental Engineering, Department of Civil Engineering, University of Ottawa, Feb., 1996.
Vu Anh, Pham, "Surface Modifying Macromolecules for Enhancement of Polyethersulfone Pervaporation Membrane Performance", Thesis, Master of Applied Science, Department of Chemical Engineering, University of Ottawa, Aug. 1995.

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