Articles producció científica> Química Analítica i Química Orgànica

Molecular Mobility in Oriented and Unoriented Membranes based on Poly[2-(Aziridin-1-yl)ethanol]

  • Identification data

    Identifier: imarina:9173479
    Handle: https://hdl.handle.net/20.500.11797/imarina9173479
    Authors:
    Teruel-Juanes, RobertoBogdanowicz, Krzysztof ArturBadia, Jose DJuano-Arbona, Victor Saenz deGraf, RobertReina, Jose AGiamberini, MartaRibes-Greus, Amparo
    Abstract:
    Unoriented and oriented membranes based on dendronized polymers and copolymers obtained by chemical modification of poly[2-(aziridin-1-yl) ethanol] (PAZE) with the dendron 3,4,5-tris[4-(n-dodecan-1-yloxy)benzyloxy]benzoate were considered. DSC, XRD, CP-MAS NMR and DETA, contribute to characterize the tendency to crystallize, the molecular mobility of the benzyloxy substituent, the dendritic liquid crystalline group and the clearing transition. The orientation of the mesogenic chain somewhat hindered this molecular motion, especially in the full substituted PAZE. The fragility, free volume and thermal expansion coefficients of these membranes near the glass transition are related to the orientation and the addition of the dendritic groups. PAZE-based membranes combine both order and mobility on a supramolecular and macroscopic level, controlled by the dendritic group and the thermal orientation, and open the possibility of preparing membranes with proper channel mobility that promotes selective ionic transport.

  • Others:

    Author, as appears in the article.: Teruel-Juanes, Roberto; Bogdanowicz, Krzysztof Artur; Badia, Jose D; Juano-Arbona, Victor Saenz de; Graf, Robert; Reina, Jose A; Giamberini, Marta; Ribes-Greus, Amparo
    Department: Enginyeria Química Química Analítica i Química Orgànica
    e-ISSN: 2073-4360
    URV's Author/s: Giamberini, Marta / Reina Lozano, José Antonio
    Keywords: Segmental dynamics Poly[2-(aziridin-1-yl)ethanol] (paze) Macromolecular cooperativity Dielectric relaxation spectra Dendronic liquid crystal membranes Den-dronic liquid crystal membranes
    Abstract: Unoriented and oriented membranes based on dendronized polymers and copolymers obtained by chemical modification of poly[2-(aziridin-1-yl) ethanol] (PAZE) with the dendron 3,4,5-tris[4-(<i>n</i>-dodecan-1-yloxy)benzyloxy]benzoate were considered. DSC, XRD, CP-MAS NMR and DETA, contribute to characterize the tendency to crystallize, the molecular mobility of the benzyloxy substituent, the dendritic liquid crystalline group and the clearing transition. The orientation of the mesogenic chain somewhat hindered this molecular motion, especially in the full substituted PAZE. The fragility, free volume and thermal expansion coefficients of these membranes near the glass transition are related to the orientation and the addition of the dendritic groups. PAZE-based membranes combine both order and mobility on a supramolecular and macroscopic level, controlled by the dendritic group and the thermal orientation, and open the possibility of preparing membranes with proper channel mobility that promotes selective ionic transport.
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: marta.giamberini@urv.cat joseantonio.reina@urv.cat
    Author identifier: 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 (7): 1060-
    APA: Teruel-Juanes, Roberto; Bogdanowicz, Krzysztof Artur; Badia, Jose D; Juano-Arbona, Victor Saenz de; Graf, Robert; Reina, Jose A; Giamberini, Marta; Ri (2021). Molecular Mobility in Oriented and Unoriented Membranes based on Poly[2-(Aziridin-1-yl)ethanol]. Polymers , 13(7), 1060-. DOI: 10.3390/polym13071060
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2021
    Publication Type: Journal Publications

  • Keywords:

    Segmental dynamics
    Poly[2-(aziridin-1-yl)ethanol] (paze)
    Macromolecular cooperativity
    Dielectric relaxation spectra
    Dendronic liquid crystal membranes
    Den-dronic liquid crystal membranes

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