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

1996-10-25

1999-04-06

Krynski, Wiiliam

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

428394, 428395, 428397, 428421, 428422, 55522, 55527, 96 8, 96 10, 21050023, 21050024, 21050039, 264 41, 26417714, 26472717, 264178, 26421114, D02G 300, B01D 2400, B01D 3900, B29C 6500

Patent

active

058915729

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(phenylemoxide) composite membranes Part II. Characterization of fluroinated layer," Jour. Membrane Science V. 90 1994, pp. 37-53.
J.D. Le Roux et al, "Modification of asymmetric polysulfono membranes bymild surface fluorination Part II. Characterization of the fluorinated surface." Jour. Membrane Sciences. V. 94, 1994, pp. 143-162.

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