Membranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties

In this paper, we report on the preparation and characterization of membranes out of two side-chain liquid crystalline copolymers, dendronized at two different extents (20 and 40%, CP20 and CP40, respectively). The membranes were characterized by atomic force microscopy (AFM), field-emission scannin...

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Auteurs principaux:	Alireza Zare, Xavier Montané, José Antonio Reina, Marta Giamberini
Format:	article
Langue:	EN
Publié:	MDPI AG 2021
Sujets:	Poly(epichlorohydrin-co-ethylene oxide) dendrons cation-exchange membrane wettability methanol permeability linear sweep voltammetry Organic chemistry QD241-441
Accès en ligne:	https://doaj.org/article/eb6b4a50dcfa4465abc2ee26a81a2f8f
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spelling	oai:doaj.org-article:eb6b4a50dcfa4465abc2ee26a81a2f8f2021-11-25T18:48:19ZMembranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties10.3390/polym132239152073-4360https://doaj.org/article/eb6b4a50dcfa4465abc2ee26a81a2f8f2021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/22/3915https://doaj.org/toc/2073-4360In this paper, we report on the preparation and characterization of membranes out of two side-chain liquid crystalline copolymers, dendronized at two different extents (20 and 40%, CP20 and CP40, respectively). The membranes were characterized by atomic force microscopy (AFM), field-emission scanning electron microscopy (FESEM), contact angle (CA) analysis, and water uptake. Moreover, transport properties were studied by methanol and proton conductivity experiment and by linear sweep voltammetry (LSV). For the sake of comparison, the behavior of the grafted copolymers was compared with the unmodified copolyether CP0 and with Nafion 117. Results demonstrated that in CP20 and CP40, cation transport depends on the presence of defined cationic channels, not affected by water presence; the comparison between LSV experiments performed with different alkaline cations suggests that CP40 possesses channels with larger diameters and better-defined inner structures.Alireza ZareXavier MontanéJosé Antonio ReinaMarta GiamberiniMDPI AGarticlePoly(epichlorohydrin-co-ethylene oxide)dendronscation-exchange membranewettabilitymethanol permeabilitylinear sweep voltammetryOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3915, p 3915 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Poly(epichlorohydrin-co-ethylene oxide) dendrons cation-exchange membrane wettability methanol permeability linear sweep voltammetry Organic chemistry QD241-441
spellingShingle	Poly(epichlorohydrin-co-ethylene oxide) dendrons cation-exchange membrane wettability methanol permeability linear sweep voltammetry Organic chemistry QD241-441 Alireza Zare Xavier Montané José Antonio Reina Marta Giamberini Membranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties
description	In this paper, we report on the preparation and characterization of membranes out of two side-chain liquid crystalline copolymers, dendronized at two different extents (20 and 40%, CP20 and CP40, respectively). The membranes were characterized by atomic force microscopy (AFM), field-emission scanning electron microscopy (FESEM), contact angle (CA) analysis, and water uptake. Moreover, transport properties were studied by methanol and proton conductivity experiment and by linear sweep voltammetry (LSV). For the sake of comparison, the behavior of the grafted copolymers was compared with the unmodified copolyether CP0 and with Nafion 117. Results demonstrated that in CP20 and CP40, cation transport depends on the presence of defined cationic channels, not affected by water presence; the comparison between LSV experiments performed with different alkaline cations suggests that CP40 possesses channels with larger diameters and better-defined inner structures.
format	article
author	Alireza Zare Xavier Montané José Antonio Reina Marta Giamberini
author_facet	Alireza Zare Xavier Montané José Antonio Reina Marta Giamberini
author_sort	Alireza Zare
title	Membranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties
title_short	Membranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties
title_full	Membranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties
title_fullStr	Membranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties
title_full_unstemmed	Membranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties
title_sort	membranes for cation transport based on dendronized poly(epichlorohydrin-co-ethylene oxide). part 2: membrane characterization and transport properties
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/eb6b4a50dcfa4465abc2ee26a81a2f8f
work_keys_str_mv	AT alirezazare membranesforcationtransportbasedondendronizedpolyepichlorohydrincoethyleneoxidepart2membranecharacterizationandtransportproperties AT xaviermontane membranesforcationtransportbasedondendronizedpolyepichlorohydrincoethyleneoxidepart2membranecharacterizationandtransportproperties AT joseantonioreina membranesforcationtransportbasedondendronizedpolyepichlorohydrincoethyleneoxidepart2membranecharacterizationandtransportproperties AT martagiamberini membranesforcationtransportbasedondendronizedpolyepichlorohydrincoethyleneoxidepart2membranecharacterizationandtransportproperties
_version_	1718410747230289920

Membranes for Cation Transport Based on Dendronized Poly(Epichlorohydrin-Co-Ethylene Oxide). Part 2: Membrane Characterization and Transport Properties

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