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Smectic Liquid Crystalline Polymer Membranes with Aligned Nanopores in an Anisotropic Scaffold

[Image: see text] Bottom-up methods for the fabrication of nanoporous polymer membranes have numerous advantages. However, it remains challenging to fabricate nanoporous membranes that are mechanically robust and have aligned pores, that is, with a low tortuosity. Here, a mechanically robust thin-fi...

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Autores principales: Houben, Simon J. A., van Merwijk, Storm A., Langers, Bruno J. H., Oosterlaken, Bernette M., Borneman, Zandrie, Schenning, Albert P. H. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7898271/
https://www.ncbi.nlm.nih.gov/pubmed/33539067
http://dx.doi.org/10.1021/acsami.0c20898
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author Houben, Simon J. A.
van Merwijk, Storm A.
Langers, Bruno J. H.
Oosterlaken, Bernette M.
Borneman, Zandrie
Schenning, Albert P. H. J.
author_facet Houben, Simon J. A.
van Merwijk, Storm A.
Langers, Bruno J. H.
Oosterlaken, Bernette M.
Borneman, Zandrie
Schenning, Albert P. H. J.
author_sort Houben, Simon J. A.
collection PubMed
description [Image: see text] Bottom-up methods for the fabrication of nanoporous polymer membranes have numerous advantages. However, it remains challenging to fabricate nanoporous membranes that are mechanically robust and have aligned pores, that is, with a low tortuosity. Here, a mechanically robust thin-film composite membrane was fabricated consisting of a two-dimensional (2D) porous smectic liquid crystalline polymer network inside an anisotropic, microporous polymer scaffold. The polymer scaffold allows for relatively straightforward planar alignment of the smectic liquid crystalline mixture, which consisted of a diacrylate cross-linker and a dimer forming benzoic acid-based monoacrylate. Polymerized samples displayed a smectic A (SmA) phase, which formed the eventual 2D porous channels after base treatment. The aligned 2D nanoporous membranes showed a high rejection of anionic solutes bigger than 322 g/mol. Cleaning and reusability of the system were demonstrated by intentionally fouling the porous channels with a cationic dye and subsequently cleaning the membrane with an acidic solution. After cleaning, the membrane properties were unaffected; this, combined with numerous pressurizing cycles, demonstrated reusability of the system.
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spelling pubmed-78982712021-02-23 Smectic Liquid Crystalline Polymer Membranes with Aligned Nanopores in an Anisotropic Scaffold Houben, Simon J. A. van Merwijk, Storm A. Langers, Bruno J. H. Oosterlaken, Bernette M. Borneman, Zandrie Schenning, Albert P. H. J. ACS Appl Mater Interfaces [Image: see text] Bottom-up methods for the fabrication of nanoporous polymer membranes have numerous advantages. However, it remains challenging to fabricate nanoporous membranes that are mechanically robust and have aligned pores, that is, with a low tortuosity. Here, a mechanically robust thin-film composite membrane was fabricated consisting of a two-dimensional (2D) porous smectic liquid crystalline polymer network inside an anisotropic, microporous polymer scaffold. The polymer scaffold allows for relatively straightforward planar alignment of the smectic liquid crystalline mixture, which consisted of a diacrylate cross-linker and a dimer forming benzoic acid-based monoacrylate. Polymerized samples displayed a smectic A (SmA) phase, which formed the eventual 2D porous channels after base treatment. The aligned 2D nanoporous membranes showed a high rejection of anionic solutes bigger than 322 g/mol. Cleaning and reusability of the system were demonstrated by intentionally fouling the porous channels with a cationic dye and subsequently cleaning the membrane with an acidic solution. After cleaning, the membrane properties were unaffected; this, combined with numerous pressurizing cycles, demonstrated reusability of the system. American Chemical Society 2021-02-04 2021-02-17 /pmc/articles/PMC7898271/ /pubmed/33539067 http://dx.doi.org/10.1021/acsami.0c20898 Text en © 2021 The Authors. Published by American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Houben, Simon J. A.
van Merwijk, Storm A.
Langers, Bruno J. H.
Oosterlaken, Bernette M.
Borneman, Zandrie
Schenning, Albert P. H. J.
Smectic Liquid Crystalline Polymer Membranes with Aligned Nanopores in an Anisotropic Scaffold
title Smectic Liquid Crystalline Polymer Membranes with Aligned Nanopores in an Anisotropic Scaffold
title_full Smectic Liquid Crystalline Polymer Membranes with Aligned Nanopores in an Anisotropic Scaffold
title_fullStr Smectic Liquid Crystalline Polymer Membranes with Aligned Nanopores in an Anisotropic Scaffold
title_full_unstemmed Smectic Liquid Crystalline Polymer Membranes with Aligned Nanopores in an Anisotropic Scaffold
title_short Smectic Liquid Crystalline Polymer Membranes with Aligned Nanopores in an Anisotropic Scaffold
title_sort smectic liquid crystalline polymer membranes with aligned nanopores in an anisotropic scaffold
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7898271/
https://www.ncbi.nlm.nih.gov/pubmed/33539067
http://dx.doi.org/10.1021/acsami.0c20898
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