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Water And Ion Transport Through The Glass Transition In Polyelectrolyte Complexes

Title: Water And Ion Transport Through The Glass Transition In Polyelectrolyte Complexes.
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Inaccessible until Jul 28, 2021 due to copyright restrictions.

Name(s): Abou Shaheen, Samir, author
Yang, Mo, author
Chen, Banghao, author
Schlenoff, Joseph B., author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2020-07-28
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Polyelectrolyte complexes or coacervates, PECs, represent one of the many families of ion-containing polymers proposed or in use for applications requiring mobile ions, including fuel cells, water purification, and rechargeable batteries. Interest in these materials has focused on how ion transport is coupled to, and limited by, polymer dynamics, which slow considerably below the glass transition, T-g. Unlike many other polymer systems, ion conductivity in hydrated PECs remains high above and below T-g. In this work, we investigate the transport of water and ions within a PEC as the polymer host passes through T-g. We find no evidence of a response in the transport of water and small univalent ions, such as Na+ and Cl-, as the hydrated PEC goes through T-g. In contrast, triple-charged ions ferricyanide and ruthenium hexamine experience a second-order change in transport rate at T-g. This response is interpreted to show that these ions engage enough polyelectrolyte repeat units to experience the highly localized cooperative rearrangement thought to be responsible for the glass transition.
Identifier: FSU_libsubv1_wos_000557753300007 (IID), 10.1021/acs.chemmater.0c01217 (DOI)
Keywords: temperature, diffusion, hydration, membranes, multilayer films, polymers, relaxation, salt
Publication Note: The publisher's version of record is availible at https://doi.org/10.1021/acs.chemmater.0c01217
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000557753300007
Host Institution: FSU
Is Part Of: Chemistry of Materials.
0897-4756
Issue: iss. 14, vol. 32

Choose the citation style.
Abou Shaheen, S., Yang, M., Chen, B., & Schlenoff, J. B. (2020). Water And Ion Transport Through The Glass Transition In Polyelectrolyte Complexes. Chemistry Of Materials. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000557753300007