Počet záznamů: 1

Synthesis and characterization of calix[4]arene-containing polyimides

  1. 1.
    0356497 - UMCH-V 2011 RIV GB eng J - Článek v odborném periodiku
    Hobzová, Radka - Sysel, P. - Dušková-Smrčková, Miroslava
    Synthesis and characterization of calix[4]arene-containing polyimides.
    Polymer International. Roč. 60, č. 3 (2011), s. 405-413 ISSN 0959-8103
    Výzkumný záměr: CEZ:AV0Z40500505
    Klíčová slova: polyimides * diaminocalix[4]arenes * synthesis
    Kód oboru RIV: CD - Makromolekulární chemie
    Impakt faktor: 1.902, rok: 2011

    Three types of amino-functionalized calixarenes, i.e. the diaminocalix[4]arenes 5,17-diaminomethyl-25,26,27,28-tetrapropoxycalix[4]arene, 25,27-diaminoethoxy-26,28-dihydroxycalix[4]arene and 5,11,17,23-tetra-tert-butyl-25,27-diaminoethoxy-26,28-dihydroxycalix[4]arene, were synthesized and incorporated as comonomers into the backbones of polyimides. As a first step, (poly(amic acid)s) were prepared by condensation reaction of diamine with dianhydride at the stoichiometric ratio. The diamine component was composed of synthesized diaminocalix[4]arene and commercial 4,4′-oxydianiline combined in various molar ratios. The dianhydride used was 4,4′-oxydiphthalic anhydride. The poly(amic acid)s were characterized by viscosity and 1H NMR spectroscopy. The precursors were then transformed into the polyimides using a thermal treatment. Thermal and dynamic mechanical behaviour, wide-angle X-ray diffraction and solubility of the resulting polyimide films in selected solvents were evaluated.
    Trvalý link: http://hdl.handle.net/11104/0006339