Method of preparing membranes from blends of polymers

Details Method of preparing membranes from blends of polymers Method of preparing membranes from blends of polymers

1994-10-11

1998-03-31

Ryan, Patrick

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428397, 428394, 428395, 55522, 55527, 96 8, 96 10, 96 12, 21050023, 21050024, 21050039, 264 41, 26417714, 26417717, 264178, 26421114, D02G 300

Patent

active

057336571

ABSTRACT:
Improved anisotropic fluid separation membranes are prepared from blends of polymers with surface energy differences. The membranes are formulated by processes wherein low surface energy polymer with desirable fluid separation and permeation characteristics is preferentially concentrated in the surface discriminating layer of the membrane.

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J.D. Le Roux et al, "Surface fluorination of poly (phenylene oxide) composite membranes Part II. Characterization of the fluorinated layer", Journal of Membrane Science 90 (1994) 37-53.
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