Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization

Abstract Thin-film composite poly(amide) (PA) membranes have greatly diversified water supplies and food products. However, users would benefit from a control of the electrostatic interactions between the liquid and the net surface charge interface in order to benefit wider application. The ionic se...

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Autores principales:	Rackel Reis, Mikel C. Duke, Blaise L. Tardy, Daniel Oldfield, Raymond R. Dagastine, John D. Orbell, Ludovic F. Dumée
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e20ba6c793054aa18bb5c228aea42a6b
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spelling	oai:doaj.org-article:e20ba6c793054aa18bb5c228aea42a6b2021-12-02T16:07:06ZCharge tunable thin-film composite membranes by gamma-ray triggered surface polymerization10.1038/s41598-017-04900-52045-2322https://doaj.org/article/e20ba6c793054aa18bb5c228aea42a6b2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04900-5https://doaj.org/toc/2045-2322Abstract Thin-film composite poly(amide) (PA) membranes have greatly diversified water supplies and food products. However, users would benefit from a control of the electrostatic interactions between the liquid and the net surface charge interface in order to benefit wider application. The ionic selectivity of the 100 nm PA semi-permeable layer is significantly affected by the pH of the solution. In this work, for the first time, a convenient route is presented to configure the surface charge of PA membranes by gamma ray induced surface grafting. This rapid and up-scalable method offers a versatile route for surface grafting by adjusting the irradiation total dose and the monomer concentration. Specifically, thin coatings obtained at low irradiation doses between 1 and 10 kGy and at low monomer concentration of 1 v/v% in methanol/water (1:1) solutions, dramatically altered the net surface charge of the pristine membranes from −25 mV to +45 mV, whilst the isoelectric point of the materials shifted from pH 3 to pH 7. This modification resulted in an improved water flux by over 55%, from 45.9 to up 70 L.m−2.h−1, whilst NaCl rejection was found to drop by only 1% compared to pristine membranes.Rackel ReisMikel C. DukeBlaise L. TardyDaniel OldfieldRaymond R. DagastineJohn D. OrbellLudovic F. DuméeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rackel Reis Mikel C. Duke Blaise L. Tardy Daniel Oldfield Raymond R. Dagastine John D. Orbell Ludovic F. Dumée Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization
description	Abstract Thin-film composite poly(amide) (PA) membranes have greatly diversified water supplies and food products. However, users would benefit from a control of the electrostatic interactions between the liquid and the net surface charge interface in order to benefit wider application. The ionic selectivity of the 100 nm PA semi-permeable layer is significantly affected by the pH of the solution. In this work, for the first time, a convenient route is presented to configure the surface charge of PA membranes by gamma ray induced surface grafting. This rapid and up-scalable method offers a versatile route for surface grafting by adjusting the irradiation total dose and the monomer concentration. Specifically, thin coatings obtained at low irradiation doses between 1 and 10 kGy and at low monomer concentration of 1 v/v% in methanol/water (1:1) solutions, dramatically altered the net surface charge of the pristine membranes from −25 mV to +45 mV, whilst the isoelectric point of the materials shifted from pH 3 to pH 7. This modification resulted in an improved water flux by over 55%, from 45.9 to up 70 L.m−2.h−1, whilst NaCl rejection was found to drop by only 1% compared to pristine membranes.
format	article
author	Rackel Reis Mikel C. Duke Blaise L. Tardy Daniel Oldfield Raymond R. Dagastine John D. Orbell Ludovic F. Dumée
author_facet	Rackel Reis Mikel C. Duke Blaise L. Tardy Daniel Oldfield Raymond R. Dagastine John D. Orbell Ludovic F. Dumée
author_sort	Rackel Reis
title	Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization
title_short	Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization
title_full	Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization
title_fullStr	Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization
title_full_unstemmed	Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization
title_sort	charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e20ba6c793054aa18bb5c228aea42a6b
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Charge tunable thin-film composite membranes by gamma-ray triggered surface polymerization

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