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Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size

Membrane desalination is a leading technology for treating saline waters to augment fresh water supply. The need for high-performance desalination membranes, particularly with high water/salt selectivity, has stimulated research into the fundamental structure-property-performance relationship of sta...

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Autores principales: Lu, Xinglin, Feng, Xunda, Yang, Yi, Jiang, Jin, Cheng, Wei, Liu, Caihong, Gopinadhan, Manesh, Osuji, Chinedum O., Ma, Jun, Elimelech, Menachem
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6538653/
https://www.ncbi.nlm.nih.gov/pubmed/31138798
http://dx.doi.org/10.1038/s41467-019-10132-0
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author Lu, Xinglin
Feng, Xunda
Yang, Yi
Jiang, Jin
Cheng, Wei
Liu, Caihong
Gopinadhan, Manesh
Osuji, Chinedum O.
Ma, Jun
Elimelech, Menachem
author_facet Lu, Xinglin
Feng, Xunda
Yang, Yi
Jiang, Jin
Cheng, Wei
Liu, Caihong
Gopinadhan, Manesh
Osuji, Chinedum O.
Ma, Jun
Elimelech, Menachem
author_sort Lu, Xinglin
collection PubMed
description Membrane desalination is a leading technology for treating saline waters to augment fresh water supply. The need for high-performance desalination membranes, particularly with high water/salt selectivity, has stimulated research into the fundamental structure-property-performance relationship of state-of-the-art membranes. In this study, we utilize a facile method for tuning properties of a polymeric desalination membrane to shed light on water and salt transport mechanisms of such membranes. A desalination membrane made of cellulose triacetate is treated in a plasticizer solution, followed by water rinsing. The modified membranes exhibit reduced salt flux without compromising water flux, indicating enhanced water/salt selectivity. An inspection of material characteristics using a model film system reveals a plasticizing-extracting process in changing the polymeric structure, which leads to the reduction of crystallite size in the polymer matrix, consequently affecting the transport properties of the membranes. Our findings highlight the potential of the plasticizing-extracting process in fabricating membranes with desired desalination performance.
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spelling pubmed-65386532019-05-30 Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size Lu, Xinglin Feng, Xunda Yang, Yi Jiang, Jin Cheng, Wei Liu, Caihong Gopinadhan, Manesh Osuji, Chinedum O. Ma, Jun Elimelech, Menachem Nat Commun Article Membrane desalination is a leading technology for treating saline waters to augment fresh water supply. The need for high-performance desalination membranes, particularly with high water/salt selectivity, has stimulated research into the fundamental structure-property-performance relationship of state-of-the-art membranes. In this study, we utilize a facile method for tuning properties of a polymeric desalination membrane to shed light on water and salt transport mechanisms of such membranes. A desalination membrane made of cellulose triacetate is treated in a plasticizer solution, followed by water rinsing. The modified membranes exhibit reduced salt flux without compromising water flux, indicating enhanced water/salt selectivity. An inspection of material characteristics using a model film system reveals a plasticizing-extracting process in changing the polymeric structure, which leads to the reduction of crystallite size in the polymer matrix, consequently affecting the transport properties of the membranes. Our findings highlight the potential of the plasticizing-extracting process in fabricating membranes with desired desalination performance. Nature Publishing Group UK 2019-05-28 /pmc/articles/PMC6538653/ /pubmed/31138798 http://dx.doi.org/10.1038/s41467-019-10132-0 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Lu, Xinglin
Feng, Xunda
Yang, Yi
Jiang, Jin
Cheng, Wei
Liu, Caihong
Gopinadhan, Manesh
Osuji, Chinedum O.
Ma, Jun
Elimelech, Menachem
Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size
title Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size
title_full Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size
title_fullStr Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size
title_full_unstemmed Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size
title_short Tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size
title_sort tuning the permselectivity of polymeric desalination membranes via control of polymer crystallite size
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6538653/
https://www.ncbi.nlm.nih.gov/pubmed/31138798
http://dx.doi.org/10.1038/s41467-019-10132-0
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