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Composite Membrane Formation by Combination of Reaction‐Induced and Nonsolvent‐Induced Phase Separation
Author(s) -
Aburabie Jamaliah,
Villalobos Luis Francisco,
Peinemann KlausViktor
Publication year - 2017
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201700131
Subject(s) - membrane , materials science , substructure , fabrication , polymer , layer (electronics) , composite number , porosity , phase (matter) , chemical engineering , membrane structure , nanotechnology , polymer chemistry , composite material , organic chemistry , chemistry , structural engineering , medicine , biochemistry , alternative medicine , pathology , engineering
A novel method of preparing skinned asymmetric membranes with two distinctive layers is described: a top layer composed of chemically cross‐linked polymer chains (dense layer) and a bottom layer of non‐cross‐linked polymer chains (porous substructure). The method consists of two simple steps that are compatible with industrial membrane fabrication facilities. Unlike conventional processes to prepare asymmetric membranes, with this approach it is possible to finely control the structure and functionalities of the final membrane. The thickness of the dense layer can be easily controlled over several orders of magnitude and targeted functional groups can be readily incorporated in it.