Ultrahigh-permeance PIM-1 based thin film nanocomposite membranes on PAN supports for CO 2 separation

Bhavsar, R. S., Mitra, T., Adams, D. J. , Cooper, A. I. and Budd, P. M. (2018) Ultrahigh-permeance PIM-1 based thin film nanocomposite membranes on PAN supports for CO 2 separation. Journal of Membrane Science, 564, pp. 878-886. (doi: 10.1016/j.memsci.2018.07.089)

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High permeance membranes were produced by addition of highly permeable nanoparticulate fillers (hypercrosslinked polystyrene, HCP, and its carbonized form, C-HCP) to a high free volume polymer (polymer of intrinsic microporosity PIM-1) in a thin film (typically 2 μm) on a porous polyacrylonitrile support. Self-standing mixed matrix membranes (MMMs) of thicknesses in the range 40−90 μm were also prepared with the same polymer and fillers. While robust MMMs could only be formed for moderate filler loadings, thin film nanocomposite (TFN) membranes could be produced from dispersions with filler loadings up to 60 wt%. On increasing the filler loading, CO2 permeance increased in line with the predictions of the Maxwell model for a highly permeable filler. Physical ageing led to some loss of permeance coupled with an increase in CO2/N2 selectivity. However, for TFN membranes the greatest effects of ageing were seen within 90 days. After ageing, TFN membranes showed high permeance with reasonable selectivity; for example, with 60 wt% C-HCP, CO2 permeance > 9,300 GPU, CO2/N2 selectivity ~ 11.

Item Type:Articles
Additional Information:The authors thank the EPSRC for funding (EP/M001342/1). D. A. thanks the EPSRC for a Fellowship (EP/L021978/1).
Glasgow Author(s) Enlighten ID:Adams, Dave
Authors: Bhavsar, R. S., Mitra, T., Adams, D. J., Cooper, A. I., and Budd, P. M.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of Membrane Science
ISSN (Online):1873-3123
Published Online:31 July 2018
Copyright Holders:Copyright © 2018 The Authors
First Published:First published in Journal of Membrane Science 564: 878-886
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
768041Multicomponent Supramolecular HydrogelsDave AdamsEngineering and Physical Sciences Research Council (EPSRC)EP/L021978/2SCHOOL OF CHEMISTRY