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Membranes for Cation Transport Based on Dendronized Poly(epichlorohydrin-co-ethylene oxide). Part 2: Membrane characterization and transport properties

  • Identification data

    Identifier: imarina:9243163
    Handle: https://hdl.handle.net/20.500.11797/imarina9243163
    Authors:
    Alireza ZareXavier MontanéJosé Antonio ReinaMarta Giamberini
    Abstract:
    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.

  • Others:

    Author, as appears in the article.: Alireza Zare; Xavier Montané; José Antonio Reina; Marta Giamberini
    Department: Química Analítica i Química Orgànica Enginyeria Química
    URV's Author/s: Giamberini, Marta / Montané Montané, Xavier / Reina Lozano, José Antonio / Zare, Alireza
    Keywords: Wettability Poly(epichlorohydrin-co-ethylene oxide) Methanol permeability Linear sweep voltammetry Enginyeria química Dendrons Cation-exchange membrane
    Abstract: 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.
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: xavier.montane@urv.cat alireza.zare@urv.cat marta.giamberini@urv.cat joseantonio.reina@urv.cat
    Author identifier: 0000-0002-1426-239X 0000-0002-6981-8914 0000-0001-8278-3552 0000-0002-9245-4135
    Record's date: 2024-11-02
    Papper version: info:eu-repo/semantics/publishedVersion
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Polymers . 13 (22): 3915-
    APA: Alireza Zare; Xavier Montané; José Antonio Reina; Marta Giamberini (2021). Membranes for Cation Transport Based on Dendronized Poly(epichlorohydrin-co-ethylene oxide). Part 2: Membrane characterization and transport properties. Polymers , 13(22), 3915-. DOI: 10.3390/polym13223915
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2021
    Publication Type: Journal Publications

  • Keywords:

    Wettability
    Poly(epichlorohydrin-co-ethylene oxide)
    Methanol permeability
    Linear sweep voltammetry
    Enginyeria química
    Dendrons
    Cation-exchange membrane

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