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

  • Dades identificatives

    Identificador: imarina:9173479
    Autors:
    Teruel-Juanes, RobertoBogdanowicz, Krzysztof ArturBadia, Jose DJuano-Arbona, Victor Saenz deGraf, RobertReina, Jose AGiamberini, MartaRibes-Greus, Amparo
    Resum:
    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.
  • Altres:

    Autor segons l'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
    Departament: Enginyeria Química Química Analítica i Química Orgànica
    e-ISSN: 2073-4360
    Autor/s de la URV: Giamberini, Marta / Reina Lozano, José Antonio
    Paraules clau: Segmental dynamics Poly[2-(aziridin-1-yl)ethanol] (paze) Macromolecular cooperativity Dielectric relaxation spectra Dendronic liquid crystal membranes Den-dronic liquid crystal membranes
    Resum: 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.
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: marta.giamberini@urv.cat joseantonio.reina@urv.cat
    Identificador de l'autor: 0000-0001-8278-3552 0000-0002-9245-4135
    Data d'alta del registre: 2024-11-02
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Polymers . 13 (7): 1060-
    Referència de l'ítem segons les normes 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
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2021
    Tipus de publicació: Journal Publications
  • Paraules clau:

    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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