Browsing by Author "Valentova, Helena"

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    Dynamic Mechanical And Thermal Behavior Of Novel Liquid-Crystalline Polybutadiene-Diols with Azobenzene Groups in Side Chains
    Poláková, Lenka; Sedlakova, Zdenka; Benes, Hynek; Valentova, Helena; Krakovsky, Ivan; Rabie, Feras (AIP Publishing, 2013-09-01)
    Liquid-crystalline (LC) polymers containing methoxy-or butoxy-substituted azobenzene in side chains have been prepared via radical addition of the in advance synthesized nematic thiols onto double bonds of poly(butadiene) diol [Polakova et al., Pol. Bull. 54, 315-326 (2010)]. In the present work, thermal behavior of these comblike polymers has been characterized by differential scanning calorimetry and polarizing optical microscopy. LC transitions have been also determined by rheological measurement. Time-temperature superposition of mechanical functions has been successfully applied to samples undergoing direct nematic/glassy state transition. (C) 2013 The Society of Rheology.