Development of cleavable surfactants / D. Shukla in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 1/2010 (01-02/2010)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 1/2010 (01-02/2010) . - p. 7-12 Titre : Development of cleavable surfactants Type de document : texte imprimé Auteurs : D. Shukla, Auteur ; V. K. Tyagi, Auteur Année de publication : 2010 Article en page(s) : p. 7-12 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Cleavable  surfactants  Biodegradation  Chemodegradable  Hydrolyzable  Gemini  Diels-Alder  reaction Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Cleavable surfactants are of great interest for numerous reasons. These are amphiphiles in which a weak linkage has been deliberately inserted, normally, but not always, between the hydrophobic tail and the polar head group. Surfactant may degrade by chemical means, e.g., induced by acid, alkali, ultraviolet (UV) light, heat, or ozone. Acid- and alkali-labile surfactants have also attracted the attention in recent years. The main purpose for development of novel cleavable surfactants is to improve the biodegradation characteristics and the rate of biodegradation has consequently been studied for several of the surfactants. Alkali labile linkages that have been used for the purpose include normal ester bonds, betaine esters, and carbonates. This review deals the development of monomeric and gemini type cleavable surfactants. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8063 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011905	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Preparation and Performance Properties of a Series of Novel Anionic Gemini Surfactants / D. Shukla in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 45, N° 2/2008 (03-04/2008)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 45, N° 2/2008 (03-04/2008) . - p. 72-75 Titre : Preparation and Performance Properties of a Series of Novel Anionic Gemini Surfactants Type de document : texte imprimé Auteurs : D. Shukla, Auteur ; V. K. Tyagi, Auteur Année de publication : 2008 Article en page(s) : p. 72-75 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Anionic  geminis  Monomeric  surfactants  Alkyl  phosphates  Interfacial  tension  foaming Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Anionic Gemini surfactants having two phosphate head groups and two decyl head groups were prepared in good yield. These surfactants were prepared by two step process. (i) Preparation of decyl phosphate from pyrophosphoric acid and decanol. (ii) Preparation of bis-phosphoric acid from decyl phosphate, (CH3)4NOH and different spacers by using acetonitrile as solvent. The synthesized surfactants structures were verified by FT IR, and 1HNMR spectroscopy. The physical and performance properties like surface tension and interfacial tension, foaming, wetting and emulsion stability of disodium salts of bis-phosphoric acids were also evaluated. The effects of the spacers on the properties were analyzed. It was found that properties were significantly influenced by slight variation of spacers. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3032 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
009993	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 2 / 2)