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Evaluation relaxed volume of .sub.a-./sub.PMMA and .sub.a-./sub.PMMA/CB from heating

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    0429170 - ÚH 2015 RIV CZ eng J - Článek v odborném periodiku
    Hadač, J. - Slobodian, P. - Sáha, P. - Říha, Pavel
    Evaluation relaxed volume of a-PMMA and a-PMMA/CB from heating.
    Chemické listy. Roč. 108, special issue 1 (2014), s. 50-58. ISSN 0009-2770. E-ISSN 1213-7103
    Grant ostatní: GA MŠk(CZ) EE.2.3.20.0104; GA MŠk(CZ) ED2.1.00/03.0111
    Výzkumný záměr: CEZ:AV0Z20600510
    Institucionální podpora: RVO:67985874
    Klíčová slova: isobaric heating * physical aging * PMMA * volume relaxation * polymer/carbon black composite
    Obor OECD: Nano-processes (applications on nano-scale)
    Impakt faktor: 0.272, rok: 2014
    http://www.chemicke-listy.cz/docs/full/2014_s1_s50-s58.pdf

    Volume relaxation of a-PMMA and a-PMMA/carbon black composites during heating has been analyzed from the heating scans. It concerns two ways of physical aging initiation, temperature down-jump and cooling. Samples were heated and v(T) dependency measured after annealing at various aging times bellow Tg Relaxed volume was evaluated from peaks of (T) dependencies, derivated from v(T) curves. Good agreement between isothermal relaxation measurements and relaxed volume from heating has been found out. Presence of filler particles in composite lead to reduction of relaxation response and rate of relaxation changes in PMMA.
    Trvalý link: http://hdl.handle.net/11104/0234344

     
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