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Advances in the design of self-supported ion-conducting membranes-new family of columnar liquid crystalline polyamines. Part 1: Copolymer synthesis and membrane preparation

  • Datos identificativos

    Identificador: PC:1948
  • Autores:

    Xavier Montané
    Krzysztof Artur Bogdanowicz
    Gianmarco Colace
    Jose Antonio Reina
    Pierfrancesco Cerruti
    Albena Lederer
    Marta Giamberini
  • Otros:

    Autor según el artículo: Xavier Montané; Krzysztof Artur Bogdanowicz; Gianmarco Colace; Jose Antonio Reina; Pierfrancesco Cerruti; Albena Lederer; Marta Giamberini
    Departamento: Química Analítica i Química Orgànica Enginyeria Química
    Autor/es de la URV: MONTANÉ MONTANÉ, XAVIER; Krzysztof Artur Bogdanowicz; Gianmarco Colace; REINA LOZANO, JOSÉ ANTONIO; Pierfrancesco Cerruti; Albena Lederer; GIAMBERINI ., MARTA
    Palabras clave: Chemical modification Columnar mesophase Membranes
    Resumen: Poly[2-(aziridin-1-yl)ethanol] (PAZE) is a suitable polyamine candidate which can be dendronised with 3,4,5-tris[4-(n-dodecan-1-yloxy)benzyloxy]benzoic acid (TAP) in order to obtain liquid crystalline columnar polyamines, as previously reported. However, the resulting copolymers evidenced a strong tendency to crystallise which leads to the detriment of columnar phase stability and the mechanical properties of the resulting polymeric membranes. In order to overcome this drawback, we successfully prepared LC columnar polyamines based on poly[2-(aziridin-1-yl)ethanol] modified with both TAP and benzoyl chloride at different extents. The presence of the dendron group induces self-assembling into a columnar structure, due to an exo-recognition of the side-chain dendrons, while the benzoyl group is expected to inhibit polymer crystallinity. All copolymers, except one, have lower melting points and exhibit higher clearing temperatures (Tc), when compared to the LC polyamines obtained by modification of PAZE with TAP only, reported in previous studies. In all cases they exhibited LC columnar mesophases after annealing, as inferred by DSC, XRD and POM. When casted as membranes, these columnar copolyamines can be homeotropically oriented under thermal treatment at optimal conditions, as was confirmed by X-ray diffraction studies at low 2θ angles. Additionally, SEM microscopy was used in order to evaluate the morphology of the prepared membranes.
    Grupo de investigación: Polimers Meteorgrup
    Áreas temáticas: Química Química Chemistry
    Acceso a la licencia de uso:
    ISSN: 0032-3861
    Identificador del autor: 0000-0002-1426-239X; 0000-0001-8526-626X; n/a; 0000-0002-9245-4135; 0000-0003-0822-2866; n/a; 0000-0001-8278-3552
    Fecha de alta del registro: 2016-11-23
    Página final: 309
    Volumen de revista: 105
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original:
    DOI del artículo: 10.1016/j.polymer.2016.10.047
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2016
    Página inicial: 298
    Tipo de publicación: Article Artículo Article
  • Palabras clave:

    Polímers cristal·lins
    Membranes (Tecnologia)
    Chemical modification
    Columnar mesophase
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