Bifunctional N-Oxides of Alkyldiamidoamines期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Bifunctional N-Oxides of Alkyldiamidoamines

Authors:

Andrzej Piasecki Beata Wójcik Jacek Łuczyński Dorota Piłakowska-Pietras Stanisław Witek Anna Krasowska

Affiliation:

(1) Division of Organic Technology, Department of Chemistry, Wrocław University of Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland;(2) Faculty of Biotechnology, Wrocław University, Przybyszewskiego 5, 51-148 Wrocław, Poland

Abstract:

A homologous series of new surface-active 1,1-bis{[3-(N,N-dimethylamino)ethyl]-amido}alkane-di-N-oxides were synthesized in the reaction of an appropriate diethyl 2-alkylmalonate with N,N-dimethylethylenediamine followed by oxidation with an aqueous solution of hydrogen peroxide. The adsorption isotherms of their aqueous solutions were measured and evaluated to obtain adsorption parameters: critical micelle concentration (CMC), surface excess concentration (Γ_CMC), equilibrium surface tension at the CMC (γ _CMC), cross-sectional area of the adsorbed surfactant molecule (A _CMC), standard free energies of adsorption $left({Updelta G_{text{ads}}^{text{o}} } right),$ and micellization $left( {Updelta G_{text{CMC}}^{text{o}}} right).$

Anna Krasowska (Corresponding author)Email:

Keywords:

1, 1-bis{[3-(N,N-dimethylamino)ethyl]amido}alkanes 1, 1-bis{[3-(N,N-dimethylamino)ethyl]amido}alkane-di-N-oxides Synthesis Structure analysis Surface activity

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