Ultrahigh-permeance PIM-1 based thin film nanocomposite membranes on PAN supports for CO₂ separation

Bhavsar, Rupesh S, Mitra, Tamoghna ORCID: 0000-0002-1649-6667, Adams, Dave J, Cooper, Andrew I ORCID: 0000-0003-0201-1021 and Budd, Peter M (2018) Ultrahigh-permeance PIM-1 based thin film nanocomposite membranes on PAN supports for CO₂ separation. JOURNAL OF MEMBRANE SCIENCE, 564. pp. 878-886.

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Abstract

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 > 9300 GPU, CO2/N2 selectivity ~ 11.

Item Type:	Article
Uncontrolled Keywords:	Carbon capture, Hypercrosslinked polymer, Polymer of intrinsic microporosity, Thin film nanocomposite, Mixed matrix membrane
Depositing User:	Symplectic Admin
Date Deposited:	04 Oct 2018 08:59
Last Modified:	13 Oct 2023 21:11
DOI:	10.1016/j.memsci.2018.07.089
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3026954