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2005 | 3 | 2 | 347-360
Tytuł artykułu

Kinetic study of adsorption of some biocompounds at the oil/water interface

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The adsorption kinetics of some local anesthetics, like dibucaine and tetracaine, and of stearic acid from bulk solutions at the oil/water interface was studied by using the pendent drop and ring methods. The anesthetics were dissolved in aqueous solutions (pH 2), and the fatty acid was dissolved in benzene, each biocompound at several different concentrations in bulk solutions. Kinetic equations for Langmuir mechanism of adsorption at oil/water interface were tested. The kinetic analysis shows that Langmuir kinetic approach describes the dynamic interfacial pressures within the limits of the experimental errors over a wide range of time and for different surfactant concentrations in bulk solutions. It is also concluded that this approach allows the calculation of the ratio of the adsorption and desorption rate constants of these biocompounds at the oil/water interface. Obtained results are in substantial agreement with earlier reported data for the surfactant adsorption as, well as with their molecular structure.
Wydawca

Czasopismo
Rocznik
Tom
3
Numer
2
Strony
347-360
Opis fizyczny
Daty
wydano
2005-06-01
online
2005-06-01
Twórcy
  • Department of Orthopaedic Surgery, “Iuliu Hatieganu” University of Medicine, 400028, Cluj-Napoca, Romania
  • Department of Physical Chemistry, “Babes-Bolyai” University of Cluj-Napoca, 400028, Cluj-Napoca, Romania
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Typ dokumentu
Bibliografia
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Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_BF02476001
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