Journal of Surfactants and Detergents
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Bifunctional N-Oxides of Alkyldiamidoamines
Journal of Surfactants and Detergents - Tập 12 - Trang 201-207 - 2009
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: critic......
Microbial Oxidation of Medium Chain Fatty Alcohol in the Synthesis of Sophorolipids by Candida bombicola and its Physicochemical CharacterizationAbstract Sophorolipids (SL) are glycolipid biosurfactants abundantly produced from different feedstocks by yeasts and have been widely developed for various applications. The amphipathic structures of sophorolipids imparts to them surfactant type properties. These biosurfactants are readily isolated in high yield and are nontoxic and biodegradable, which make them i... ...
Journal of Surfactants and Detergents - - 2013
Synthesis and Characterization of Some Nonionic Bolaamphiphiles
Journal of Surfactants and Detergents - Tập 17 - Trang 1125-1131 - 2014
A series of nonionic bolaamphiphiles were synthesized from the reaction of fluoroalkylene (dimercaptoacetates) with maleate crown ethers. Surface activity of the new surfactants was evaluated on the basis of surface tension measurements. The new fluorinated bolamphiphiles exhibit a remarkable lowering of surface tension in comparison with nonfluorinated analogues.
Preparation and Properties of New Ester-Linked Cleavable Gemini Surfactants
Journal of Surfactants and Detergents - Tập 14 - Trang 195-201 - 2010
We have prepared a series of novel gemini surfactants having ester bonds in their structures. These surfactants possess two identical hydrophilic polyethylene glycol moieties, two hydrophobic alkyl group moieties, and an anionic spacer. The structures of these compounds were confirmed through infrared and nuclear magnetic resonance spectroscopic and elemental analyses. The novel gemini surfactants......
Micellization Behavior of the 14‐2‐14 Gemini Surfactant with Some Conventional Surfactants at Different TemperaturesAbstract Mixed micellization behavior of the dimeric cationic surfactant ethanediyl‐1,2‐bis(dimethyl tetradecyl ammonium bromide) with monomeric cationic surfactants cetyltrimethyl ammonium bromide (CTAB), cetylpyridinium chloride (CPC), tetradecyl dimethyl benzyl ammonium chloride (C14BCl) and cetyl dimethyl benzyl ammonium chloride (C16BCl) was studied in aqueous ... ...
Journal of Surfactants and Detergents - Tập 14 Số 2 - Trang 235-244 - 2011
A New Type of Sulfobetaine Surfactant with Double Alkyl Polyoxyethylene Ether Chains for Enhanced Oil Recovery
Journal of Surfactants and Detergents - Tập 19 - Trang 967-977 - 2016
A new type of sulfobetaine with double alkyl polyoxyethylene (n) ether chains, dicoconut oil alcohol polyoxethylene (n) ether methylhydroxylpropyl sulfobetaine (diC12–14E
n
HSB) was synthesized using a commercial nonionic surfactant, coconut oil alcohol polyoxethylene (n) ether, as raw material and its properties as a surfactant for enhanced oil recovery (EOR) in ......
Preparation, surface-active properties, and antimicrobial activities of bis(alkylammonium) dichlorides having a butenylen or a butynylene spacer
Journal of Surfactants and Detergents - Tập 4 - Trang 271-277 - 2001
A series of new cationic gemini surfactants, bis(alkylammonium) dichlorides having a butenylene or a butynylene spacer, were prepared almost quantitatively by the reaction of a long-chain alkyldimethylamine with a highly reactive allylic or propargylic dichloride, and their surface-active properties were measured. All of them showed good water solubility and quite low critical micelle concentratio......
Synthesis and evaluation of polytriethanolamine monooleates for oil-based muds
Journal of Surfactants and Detergents - Tập 6 - Trang 243-251 - 2003
New emulsifiers were developed by esterification of polytriethanolamine based on the dimerization and trimerization of triethanolamine. The dimer and trimer were esterified with oleic acid to prepare monoesters of di-triethanolamine and tri-triethanolamine. The synthesized esters were evaluated as water-in-oil emulsifiers in oil-based muds, which are the circulating fluids used in rotary drilling ......
Interaction of Azo Dye with Cationic Surfactant Under Different pH Conditions
Journal of Surfactants and Detergents - Tập 13 - Trang 529-537 - 2010
The aggregation induced by Alizarin Yellow R (AYR) in the cationic surfactant, cetyltrimethylammonium bromide (CTAB), was investigated by measuring their UV–visible absorption spectra. Conductance measurements as a function of surfactant concentration below and above the critical micelle concentration (CMC) were studied. CTAB aggregation takes place at the concentration far below its normal CMC in......
Mono-, Di- and Tetra-Cationic Surfactants as Carbon Steel Corrosion Inhibitors
Journal of Surfactants and Detergents - Tập 18 - Trang 1033-1042 - 2015
Corrosion inhibition of three new synthesized cationic surfactants, N-(2-(((Z)-4-(pyridin-4-yl)but-3-en-1-yl)amino)ethyl)-N-(2-((E)-(pyridin-4-ylmethylene)amino)ethyl)dodecan-1-aminium bromide I(4N), N
1,N
2-didodecyl-N
1-((Z)-4-(pyridin-4-yl)but-3-en-1-yl)-N
2-(2-((E)-(pyridin-4-ylmethylene)amino)ethy......
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