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Aissou K, Bouzit H, Krusch F, Méricq JP, Cot D, Masquelez N, Roualdes S, Quémener D. Asymmetric Solvent-Annealed Triblock Terpolymer Thick Films Topped by a Hexagonal Perforated Lamellar Nanostructure. Macromol Rapid Commun 2021; 43:e2100585. [PMID: 34734443 DOI: 10.1002/marc.202100585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/15/2021] [Indexed: 11/10/2022]
Abstract
Asymmetric and nanostructured polystyrene-block-poly(2-vinyl pyridine)-block-poly(ethylene oxide) (PS-b-P2VP-b-PEO or SVEO, S:V:EO ≈ 56:34:10, 79.5 kg mol-1 ) thick films blended with 20 wt% of a short PS homopolymer (hPS, 10.5 kg mol-1 ) are achieved by combining the non-solvent induced phase separation (NIPS) process with a solvent vapor annealing (SVA) treatment. Here, the NIPS step allows for the formation of a highly-permeable sponge-like substructure topped by a dense thin layer exhibiting poorly-ordered nanopores while the subsequent SVA treatment enables to reconstruct the material top surface into a porous monolayer of well-ordered hexagonal perforated lamellae (HPL). This optimized film architecture generated by NIPS-SVA shows a water permeability of 860 L h-1 m-2 bar-1 , which is roughly two times higher than the flux measured through NIPS made PS-b-P2VP-b-PEO/hPS materials having poorly-ordered nanopores. The post-SVA treatment is also revealed as a powerful tool to tailor the thickness of the nanostructure formed within the blended material because monoliths entirely composed of a HPL phase are produced by increasing the time of exposure to a chloroform stream. The water flux of such PS-b-P2VP-b-PEO/hPS monoliths is found to be an order of magnitude lower than that of their asymmetric film homologues.
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Affiliation(s)
- Karim Aissou
- Institut Européen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Universite de, Montpellier, Montpellier, 34090, France
| | - Hana Bouzit
- Institut Européen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Universite de, Montpellier, Montpellier, 34090, France
| | - Felix Krusch
- Institut Européen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Universite de, Montpellier, Montpellier, 34090, France
| | - Jean Pierre Méricq
- Institut Européen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Universite de, Montpellier, Montpellier, 34090, France
| | - Didier Cot
- Institut Européen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Universite de, Montpellier, Montpellier, 34090, France
| | - Nathalie Masquelez
- Institut Européen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Universite de, Montpellier, Montpellier, 34090, France
| | - Stéphanie Roualdes
- Institut Européen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Universite de, Montpellier, Montpellier, 34090, France
| | - Damien Quémener
- Institut Européen des Membranes, IEM, UMR 5635, ENSCM, CNRS, Universite de, Montpellier, Montpellier, 34090, France
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Lantz KA, Sarkar A, Littrell KC, Li T, Hong K, Stefik M. Cavitation Enables Switchable and Rapid Block Polymer Exchange under High-χN Conditions. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01244] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Kayla A. Lantz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Amrita Sarkar
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | | | - Tianyu Li
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37934, United States
| | - Kunlun Hong
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, Tennessee 37934, United States
| | - Morgan Stefik
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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