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Solvent-Free Coating of Epoxysilicones for the Fabrication of Composite Membranes

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Title: Solvent-Free Coating of Epoxysilicones for the Fabrication of Composite Membranes
Authors: Cook, M
Peeva, L
Livingston, A
Item Type: Journal Article
Abstract: Solventless coated epoxysilicone composite membranes have been prepared from a UV curable epoxysilicone polymer for organic solvent nanofiltration. Coatings were conducted solventless on a roll-to-roll pilot line using a forward gravure coating technique, and applied on a polyacrylonitrile or cross-linked poly(ether imide) support. Cross-linking of the poly(ether imide) support membrane with propanediamine enhanced the adhesion properties of the epoxysilicone selective layer. Penetration of the coating solution into the porous support membrane was confirmed using scanning electron microscopy with energy-dispersive X-ray spectroscopy. Membranes fabricated using two different gravure heads have been studied, with submicrometer siloxane layer thicknesses achieved. The separation performance of the membranes is observed to be independent of the thickness. It has been possible to achieve membranes with a molecular weight cut-off < 500 g mol–1 in hydrocarbon solvents. Benefits of the fabrication include the ability to UV cross-link under air, elimination of solvent-based coating, and the feasibility of achieving uniform, submicrometer coatings at large scale manufacturing. These membranes comprise a further step toward greener and safer membrane production.
Issue Date: 17-Jan-2018
Date of Acceptance: 13-Dec-2017
URI: http://hdl.handle.net/10044/1/56846
DOI: https://dx.doi.org/10.1021/acs.iecr.7b04557
ISSN: 0888-5885
Publisher: American Chemical Society
Start Page: 730
End Page: 739
Journal / Book Title: Industrial & Engineering Chemistry Research
Volume: 57
Issue: 2
Copyright Statement: Copyright © 2017 American Chemical Society
Sponsor/Funder: Shell Global Solutions International BV
Funder's Grant Number: PT48173
Keywords: Science & Technology
Technology
Engineering, Chemical
Engineering
RESISTANT NANOFILTRATION
PDMS MEMBRANES
PERMEATION
LINKING
POLYMERIZATION
PERFORMANCE
SOLUBILITY
TRANSPORT
SUPPORTS
BEHAVIOR
09 Engineering
03 Chemical Sciences
Chemical Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Chemical Engineering



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