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CO(2) in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling

Ternary systems consisting of amphiphilic block copolymers/water/monoethanolamine (MEA) have been studied as potential solvents for carbon capture and storage (CCS). The phase behavior of two poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) copolymers with average compositions (EO)(8)...

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Autores principales: Rodríguez-Fabià, Sandra, Norrman, Jens, Sjöblom, Johan, Paso, Kristofer
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403676/
https://www.ncbi.nlm.nih.gov/pubmed/30960808
http://dx.doi.org/10.3390/polym10080883
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author Rodríguez-Fabià, Sandra
Norrman, Jens
Sjöblom, Johan
Paso, Kristofer
author_facet Rodríguez-Fabià, Sandra
Norrman, Jens
Sjöblom, Johan
Paso, Kristofer
author_sort Rodríguez-Fabià, Sandra
collection PubMed
description Ternary systems consisting of amphiphilic block copolymers/water/monoethanolamine (MEA) have been studied as potential solvents for carbon capture and storage (CCS). The phase behavior of two poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) copolymers with average compositions (EO)(8)(PO)(47)(EO)(8) (L92) and (EO)(3)(PO)(50)(EO)(3) (L81) have been investigated by cross-polarized visual observation and small angle X-ray scattering (SAXS). The respective ternary phase diagrams have been studied for systems containing MEA and the equivalent systems containing CO(2)-loaded MEA. The presence of MEA loaded with CO(2) hinders self-association, preventing the formation of liquid crystalline phases. One-phase liquid crystalline regions were found at low MEA concentrations (below 20 wt %) in L92. In the case of L81, only one one-phase region consisting of coexisting lamellar and disordered aggregates was found at 5 wt % MEA. The swelling of the liquid crystalline phases with MEA was investigated along designated dilution lines. The lattice parameters of L92 liquid crystals decrease upon addition of MEA, whereas L81 aggregates show the opposite behavior.
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spelling pubmed-64036762019-04-02 CO(2) in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling Rodríguez-Fabià, Sandra Norrman, Jens Sjöblom, Johan Paso, Kristofer Polymers (Basel) Article Ternary systems consisting of amphiphilic block copolymers/water/monoethanolamine (MEA) have been studied as potential solvents for carbon capture and storage (CCS). The phase behavior of two poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) copolymers with average compositions (EO)(8)(PO)(47)(EO)(8) (L92) and (EO)(3)(PO)(50)(EO)(3) (L81) have been investigated by cross-polarized visual observation and small angle X-ray scattering (SAXS). The respective ternary phase diagrams have been studied for systems containing MEA and the equivalent systems containing CO(2)-loaded MEA. The presence of MEA loaded with CO(2) hinders self-association, preventing the formation of liquid crystalline phases. One-phase liquid crystalline regions were found at low MEA concentrations (below 20 wt %) in L92. In the case of L81, only one one-phase region consisting of coexisting lamellar and disordered aggregates was found at 5 wt % MEA. The swelling of the liquid crystalline phases with MEA was investigated along designated dilution lines. The lattice parameters of L92 liquid crystals decrease upon addition of MEA, whereas L81 aggregates show the opposite behavior. MDPI 2018-08-07 /pmc/articles/PMC6403676/ /pubmed/30960808 http://dx.doi.org/10.3390/polym10080883 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rodríguez-Fabià, Sandra
Norrman, Jens
Sjöblom, Johan
Paso, Kristofer
CO(2) in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling
title CO(2) in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling
title_full CO(2) in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling
title_fullStr CO(2) in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling
title_full_unstemmed CO(2) in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling
title_short CO(2) in Lyotropic Liquid Crystals: Monoethanolamine-Facilitated Uptake and Swelling
title_sort co(2) in lyotropic liquid crystals: monoethanolamine-facilitated uptake and swelling
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6403676/
https://www.ncbi.nlm.nih.gov/pubmed/30960808
http://dx.doi.org/10.3390/polym10080883
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