Micellar behaviour of copper surfactants derived from fresh (untreated) sesame oil and used (treated at high temperature) sesame oil / R. Sharma in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 2/2010 (03-04/2010)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 2/2010 (03-04/2010) . - p. 106-112 Titre : Micellar behaviour of copper surfactants derived from fresh (untreated) sesame oil and used (treated at high temperature) sesame oil Type de document : texte imprimé Auteurs : R. Sharma, Auteur ; S. Khan ; R. Bhutra, Auteur Année de publication : 2010 Article en page(s) : p. 106-112 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuivre Huile de sésame Micelles Savon solvants Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Copper soaps have been prepared from fresh and used sesame oils. The formation of copper soaps has been confirmed by spectral technique. Micellar characterization of copper soaps has been studied by density, viscosity and ultrasonic measurements. The apparent molar volume and apparent molar compressibility have been enumerated at constant temperature using these data. The results were used to determine the critical micelle concentration (CMC), soap-solvent interaction. The results of apparent molar volume were discussed in terms of Masson's equation and the results of viscosity data have been discussed in terms of Jones-Dole equation. The CMC values are found to increase with decrease in average molecular weight of the soap. It has been observed that there is a decrease in soap-solvent interaction with the decrease in average molecular weight of copper soap. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8879 [article]

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Synthesis, characterization and antifungal activities of copper(II) soaps and their complexes derived from azadirecta indica (neem) and pongamia pinnata (karanj) oil / R. Sharma in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 3/2009 (05-06/2009)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 3/2009 (05-06/2009) . - p. 145-151 Titre : Synthesis, characterization and antifungal activities of copper(II) soaps and their complexes derived from azadirecta indica (neem) and pongamia pinnata (karanj) oil Type de document : texte imprimé Auteurs : R. Sharma, Auteur ; S. Khan, Auteur Année de publication : 2009 Article en page(s) : p. 145-151 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antifongiques Antiseptiques Benzothiazoles Candida Caractérisation Huile de karanja et constituants Huile de neem Savon Surfactants Surfactants -- Toxicologie Tests de toxicité Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Neem (Azadirecta indica) and Karanj (Pongamia pinnata) oils are ecofriendly, non-toxic, completely biodegradable with antiviral, antifungal, and antibacterial properties. The dark green colour Copper(II) soaps derived from Neem and Karanj oil, their greenish brown complexes with ligand 2-amino-6-methyl benzothiazole containing nitrogen and sulphur have been synthesized and characterized by elemental analysis. IR and NMR of complexes suggest that the complexation has taken place successfully. From the analytical data the stoichiometry of the complexes has been observed to be 1:1 (metal-ligand). Copper soaps and their complexes are good anti-fungal agents. The fungi toxicities of the oils, soaps and complexes of neem and karanj have been investigated. The results indicate that the strain of Candida species is susceptible towards complexes of benzothiazole. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5458 [article]

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