Process for the production of a fully asymmetric membrane, membrane, and use of a fully asymmetric membrane

摘要

Process for the production of a fully asymmetric membrane, membrane fully asymmetric and use of a membrane, a method for the production of a fully asymmetric membrane with at least a separation layer and a support layer adjacent to the layer of S. Eparation, comprises the steps (a) for the production of a solution spinning.It includes a membrane forming polymer and a system of solvent, (b) processing the solution spinning with a device for forming a molded body, which comprises a first and a second surface, (c) put in contact with the first and second surfaces with a Si Stema system of precipitation, which is formed by a membrane, that is,Adjacent to the first and / or second surface, a separation layer, d) washing and, if required, drying of the membrane, in which in step c) the system of precipitation system comprises polyelectrolyte with fixed negative charges.The membrane according to the invention, presents, in comparison with membranes, which has been produced according to known processes, a degree of separation increased significantly between molecules of medium size, such as, for example, the cytochrome c and high molecular weight proteins Such as, for example, albumin.