The process of obtaining membranes PVDF membranes, and the use of PVDF membranes for ultrafiltrau00c7u00c3o and nanofiltrau00c7u00c3o

摘要

The process of obtaining membranes PVDF membranes, and the use of PVDF membranes for ultrafiltrau00c7u00c3o and nanofiltrau00c7u00c3o. The present invention belongs to the production process of the membranes of poly (vinylidene fluoride) (PVDF), assimu00e9tricasa and obtained by the process of phase inversion u Tilizando water, ethanol and SDS as solvent.The membranes are manomu00e9ricas (2-4 nm) the membranes obtained with precipitant water and ethanol and semi permeable obtained with the precipirante SDS. The PVDF membranes prepared by the processes of asymmetric phase inversion have selectivity to gases, such as C0 ~ 2 ~ / N ~ 2 ~.