Fluoropolymer membranes phase inversion

Virtually the entire membrane manufacture today is based on laminate structures comprising a thin barrier layer deployed upon a much thicker, highly permeable support. Most are formed of compositionaUy homogeneous polysulfone, cellulose acetate, polyamides, and various fluoropolymers by phase inversion techniques in which ultrathin films of suitably permselective material are deposited on prefabricated porous support structures. Hydrophobic polymers as polyethylene, polypropylene, or polysulfone are often used as supports. A fairly comprehensive hst of microporous and ultrafiltration commercial membranes and produced companies are presented in Refs [107-109]. A review on inorganic membranes has been given in Ref. [110]. 

ACPS), have also been used to fabricate microporous membrane [24-29], However, among these techniques, TIPS and IP are the two most commonly employed methods in the fabrication of polymeric membranes including fluoropolymer membranes. One of the main difficulties that limit the successful casting of phase inversion membranes is the lack of a predictable and systematic method in the selection of solvent and nonsolvent systems [30],... 

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