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Mechanism of Lecithin Adsorption at a Liquid/Liquid Interface
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SYSNO ASEP 0181634 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Mechanism of Lecithin Adsorption at a Liquid/Liquid Interface Author(s) Mareček, Vladimír (UFCH-W) RID
Lhotský, Alexandr (UFCH-W)
Jänchenová, Hana (UFCH-W)Source Title Journal of Physical Chemistry. B - ISSN 1089-5647
Roč. 107, č. 19 (2003), s. 4573-4578Number of pages 6 s. Language eng - English Country US - United States Keywords adsorption ; mechanism of lecithin ; liquid/liquid interface Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/00/0636 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z4040901 - UFCH-W Annotation 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. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2004
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