separation method pervaporation CHMO:0001784 https://orcid.org/0000-0001-5985-7429 2009-05-20T01:45:31Z A method for the separation of liquid mixtures based on diffusion rate and membrane affinity. The sample mixture is placed in contact with one side of a non-porous polymeric membrane while a vacuum is applied to the other side. The components in the liquid stream permeate through the membrane, evaporate, and are then condensed.