| abstract |
Semi-permeable composite membrane with improved performance, usable in particular for removing water vapor from the air, consisting of: - a microporous asymmetric polymeric membrane comprising a dense layer, this membrane comprising from 70 to 95% of polyfluoride of vinylidene or of a copolymer of vinylidene fluoride and from 5 to 30% of a hydrophilic polymer chosen from polycellulose acetates and sulfonated polysulfones, - a coating layer, of silicone elastomer, located on the dense layer of the membrane asymmetric microporous. |