Počet záznamů: 1  

Mechanism of Lecithin Adsorption at a Liquid/Liquid Interface

  1. 1.
    0181634 - UFCH-W 20030055 RIV US eng J - Článek v odborném periodiku
    Mareček, Vladimír - Lhotský, Alexandr - Jänchenová, Hana
    Mechanism of Lecithin Adsorption at a Liquid/Liquid Interface.
    Journal of Physical Chemistry. B. Roč. 107, č. 19 (2003), s. 4573-4578. ISSN 1089-5647
    Grant CEP: GA ČR GA203/00/0636
    Výzkumný záměr: CEZ:AV0Z4040901
    Klíčová slova: adsorption * mechanism of lecithin * liquid/liquid interface
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 3.679, rok: 2003

    Adsorption of L - .alfa.-lecithin (dipalmitoyl) at the water|1,2-dichloroethane interface has been studied by cyclic voltammetry. It has been found that the voltammetric peak in acidic medium corresponds to the desorption of the protonated form of lecithin. Its surface concentration is controlled by a surface chemical reaction of the zwitter-ionic form of adsorbed lecithin with hydroxonium ion. The whole process is complemented by the potential dependent adsorption/desorption equilibrium of the protonated form of lecithin. Its concentration in the organic phase is affected by the acid-base equilibrium.
    Trvalý link: http://hdl.handle.net/11104/0078170