Crystal nuclei templated nanostructured membranes prepared by solvent crystallization and polymer migration.

ABSTRACT: Currently, production of porous polymeric membranes for filtration is predominated by the phase-separation process. However, this method has reached its technological limit, and there have been no significant breakthrough over the last decade. Here we show, using polyvinylidene fluoride as a sample polymer, a new concept of membrane manufacturing by combining oriented green solvent crystallization and polymer migration is able to obtain high performance membranes with pure water permeation flux substantially higher than those with similar pore size prepared by conventional phase-separation processes. The new manufacturing procedure is governed by fewer operating parameters and is, thus, easier to control with reproducible results. Apart from the high water permeation flux, the prepared mem

SUBMITTER: Wang B 

PROVIDER: S-EPMC5031797 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature