Thermally and Chemically Stable Isoporous Block Copolymer Membranes

Ultrafiltration (UF) membranes, particularly membranes fabricated from self-assembled diblock copolymers, hold promise in wastewater treatment, dairy, and food industries. Membrane development goals involve combining a highly porous selective layer with a narrow pore size distribution with a mechani...

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Bibliographic Details
Published in:ACS macro letters Vol. 11; no. 9; p. 1142
Main Authors: Rangou, Sofia, Appold, Michael, Lademann, Brigitte, Buhr, Kristian, Filiz, Volkan
Format: Journal Article
Language:English
Published: United States 20.09.2022
Subjects:
Membranes, Artificial
Polymers - chemistry
Porosity
Ultrafiltration - methods
ISSN:2161-1653, 2161-1653
Online Access:Get more information
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Summary:Ultrafiltration (UF) membranes, particularly membranes fabricated from self-assembled diblock copolymers, hold promise in wastewater treatment, dairy, and food industries. Membrane development goals involve combining a highly porous selective layer with a narrow pore size distribution with a mechanically stable supporting layer to achieve constant flux. To date, isoporous integral asymmetric membranes have been formed either as flat sheets or hollow fibers, and a surface-selective layer determines membrane separation performance. A unique isoporous membrane of the poly(4-vinylbenzocyclobutene)- -poly(4-vinylpyridine) (PVBCB- -P4VP) diblock copolymer with a substructure of almost homogeneous porosity throughout the body of the material (three-dimensional porosity) has been developed. Moreover, the matrix of the membrane (PVCB) enables it to undergo cross-linking, allowing the membrane to be thermally sterilized and applied in high-temperature UF applications.
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ISSN:2161-1653
2161-1653
DOI:10.1021/acsmacrolett.2c00352