How Much Do Ultrathin Polymers with Intrinsic Microporosity Swell in Liquids?

Handle URI:
http://hdl.handle.net/10754/622414
Title:
How Much Do Ultrathin Polymers with Intrinsic Microporosity Swell in Liquids?
Authors:
Ogieglo, Wojciech; Ghanem, Bader ( 0000-0002-2044-2434 ) ; Ma, Xiaohua; Pinnau, Ingo ( 0000-0003-3040-9088 ) ; Wessling, Matthias
Abstract:
As synthetic membrane materials, polymers with intrinsic microporosity (PIMs) have demonstrated unprecedented permeation and molecular-separation properties. Here, we report the swelling characteristics of submicron-thick supported films of spirobisindane-based PIMs, PIM-1 and PIM-6FDA-OH, for six organic solvents and water using in situ spectroscopic ellipsometry. Surprisingly, PIMs swell significantly in most organic solvents, with swelling factors (SF = h/h) as high as 2.5. This leads to the loss of the ultrarigid character of the polymer and produces equilibrated liquid-like swollen films. Filling of the excess frozen-in fractional free volume with liquid was discovered next to swelling-induced polymer matrix dilation. Water hardly swells the polymer matrix, but it penetrates into the intrinsic microporous structure. This study is the first to provide fundamental swelling data for PIMs, leading to better comprehension of their permeation properties. Such an understanding is indispensable for applications such as solvent filtration, natural-gas separation, and ion retention in flow batteries.
KAUST Department:
Advanced Membranes and Porous Materials Research Center
Citation:
Ogieglo W, Ghanem B, Ma X, Pinnau I, Wessling M (2016) How Much Do Ultrathin Polymers with Intrinsic Microporosity Swell in Liquids? The Journal of Physical Chemistry B 120: 10403–10410. Available: http://dx.doi.org/10.1021/acs.jpcb.6b06807.
Publisher:
American Chemical Society (ACS)
Journal:
The Journal of Physical Chemistry B
Issue Date:
13-Sep-2016
DOI:
10.1021/acs.jpcb.6b06807
Type:
Article
ISSN:
1520-6106; 1520-5207
Sponsors:
King Abdullah University of Science and Technology[OSR-2015-SEED-2445-01]
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorOgieglo, Wojciechen
dc.contributor.authorGhanem, Baderen
dc.contributor.authorMa, Xiaohuaen
dc.contributor.authorPinnau, Ingoen
dc.contributor.authorWessling, Matthiasen
dc.date.accessioned2017-01-02T09:28:29Z-
dc.date.available2017-01-02T09:28:29Z-
dc.date.issued2016-09-13en
dc.identifier.citationOgieglo W, Ghanem B, Ma X, Pinnau I, Wessling M (2016) How Much Do Ultrathin Polymers with Intrinsic Microporosity Swell in Liquids? The Journal of Physical Chemistry B 120: 10403–10410. Available: http://dx.doi.org/10.1021/acs.jpcb.6b06807.en
dc.identifier.issn1520-6106en
dc.identifier.issn1520-5207en
dc.identifier.doi10.1021/acs.jpcb.6b06807en
dc.identifier.urihttp://hdl.handle.net/10754/622414-
dc.description.abstractAs synthetic membrane materials, polymers with intrinsic microporosity (PIMs) have demonstrated unprecedented permeation and molecular-separation properties. Here, we report the swelling characteristics of submicron-thick supported films of spirobisindane-based PIMs, PIM-1 and PIM-6FDA-OH, for six organic solvents and water using in situ spectroscopic ellipsometry. Surprisingly, PIMs swell significantly in most organic solvents, with swelling factors (SF = h/h) as high as 2.5. This leads to the loss of the ultrarigid character of the polymer and produces equilibrated liquid-like swollen films. Filling of the excess frozen-in fractional free volume with liquid was discovered next to swelling-induced polymer matrix dilation. Water hardly swells the polymer matrix, but it penetrates into the intrinsic microporous structure. This study is the first to provide fundamental swelling data for PIMs, leading to better comprehension of their permeation properties. Such an understanding is indispensable for applications such as solvent filtration, natural-gas separation, and ion retention in flow batteries.en
dc.description.sponsorshipKing Abdullah University of Science and Technology[OSR-2015-SEED-2445-01]en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleHow Much Do Ultrathin Polymers with Intrinsic Microporosity Swell in Liquids?en
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.identifier.journalThe Journal of Physical Chemistry Ben
dc.contributor.institutionDWI-Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, Aachen, 52074, Germanyen
kaust.authorGhanem, Baderen
kaust.authorMa, Xiaohuaen
kaust.authorPinnau, Ingoen
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