Opposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate

Cholinium-based ionic liquids ([Ch]-based ILs) were investigated as electrolytes in the formation of aqueous biphasic systems (ABS) composed of polyethylene glycol (PEG) and sodium polyacrylate (NaPA) polymers. Both enhancement and decrease in the liquid-liquid demixing ability induced by electrolyt...

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Autores principales:	Sandra C. Bernardo, Emanuel V. Capela, Jorge F. B. Pereira, Sónia P. M. Ventura, Mara G. Freire, João A. P. Coutinho
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	liquid-liquid equilibrium cholinium-based ionic liquids polymeric aqueous biphasic systems electrolytes demixing behavior Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/89ff85e891cd4fbbaf7d8b3dcd4db93a
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spelling	oai:doaj.org-article:89ff85e891cd4fbbaf7d8b3dcd4db93a2021-11-11T18:35:00ZOpposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate10.3390/molecules262166121420-3049https://doaj.org/article/89ff85e891cd4fbbaf7d8b3dcd4db93a2021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6612https://doaj.org/toc/1420-3049Cholinium-based ionic liquids ([Ch]-based ILs) were investigated as electrolytes in the formation of aqueous biphasic systems (ABS) composed of polyethylene glycol (PEG) and sodium polyacrylate (NaPA) polymers. Both enhancement and decrease in the liquid-liquid demixing ability induced by electrolytes in PEG-NaPA aqueous biphasic systems were observed. It is shown that the ILs that most extensively partition to the PEG-rich phase tend to act as inorganic salts enhancing the two-phase formation ability, while those that display a more significant partition to the NaPA-rich phase decrease the ABS formation capacity. The gathered results allowed us to confirm the tailoring ability of ILs and to identify, for the first time, opposite effects induced by electrolytes on the PEG-NaPA ABS formation ability. The distribution of the electrolyte ions between the coexisting phases and the polyelectrolyte ion compartmentalization are key factors behind the formation of PEG-NaPA-based ABS.Sandra C. BernardoEmanuel V. CapelaJorge F. B. PereiraSónia P. M. VenturaMara G. FreireJoão A. P. CoutinhoMDPI AGarticleliquid-liquid equilibriumcholinium-based ionic liquidspolymeric aqueous biphasic systemselectrolytesdemixing behaviorOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6612, p 6612 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	liquid-liquid equilibrium cholinium-based ionic liquids polymeric aqueous biphasic systems electrolytes demixing behavior Organic chemistry QD241-441
spellingShingle	liquid-liquid equilibrium cholinium-based ionic liquids polymeric aqueous biphasic systems electrolytes demixing behavior Organic chemistry QD241-441 Sandra C. Bernardo Emanuel V. Capela Jorge F. B. Pereira Sónia P. M. Ventura Mara G. Freire João A. P. Coutinho Opposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate
description	Cholinium-based ionic liquids ([Ch]-based ILs) were investigated as electrolytes in the formation of aqueous biphasic systems (ABS) composed of polyethylene glycol (PEG) and sodium polyacrylate (NaPA) polymers. Both enhancement and decrease in the liquid-liquid demixing ability induced by electrolytes in PEG-NaPA aqueous biphasic systems were observed. It is shown that the ILs that most extensively partition to the PEG-rich phase tend to act as inorganic salts enhancing the two-phase formation ability, while those that display a more significant partition to the NaPA-rich phase decrease the ABS formation capacity. The gathered results allowed us to confirm the tailoring ability of ILs and to identify, for the first time, opposite effects induced by electrolytes on the PEG-NaPA ABS formation ability. The distribution of the electrolyte ions between the coexisting phases and the polyelectrolyte ion compartmentalization are key factors behind the formation of PEG-NaPA-based ABS.
format	article
author	Sandra C. Bernardo Emanuel V. Capela Jorge F. B. Pereira Sónia P. M. Ventura Mara G. Freire João A. P. Coutinho
author_facet	Sandra C. Bernardo Emanuel V. Capela Jorge F. B. Pereira Sónia P. M. Ventura Mara G. Freire João A. P. Coutinho
author_sort	Sandra C. Bernardo
title	Opposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate
title_short	Opposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate
title_full	Opposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate
title_fullStr	Opposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate
title_full_unstemmed	Opposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate
title_sort	opposite effects induced by cholinium-based ionic liquid electrolytes in the formation of aqueous biphasic systems comprising polyethylene glycol and sodium polyacrylate
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/89ff85e891cd4fbbaf7d8b3dcd4db93a
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Opposite Effects Induced by Cholinium-Based Ionic Liquid Electrolytes in the Formation of Aqueous Biphasic Systems Comprising Polyethylene Glycol and Sodium Polyacrylate

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