Journal of Surfactants and Detergents
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An alternative synthesis and mobile phase ion chromatography of alkanedisulfates
Journal of Surfactants and Detergents - Tập 5 - Trang 359-362 - 2002
Preparation of alkane disulfates using chlorosulfonic acid results in a crude product containing significant amounts of chloride, sulfate, and hydroxyalkanesulfates. This paper describes an alternative synthesis using trimethylamine:sulfur dioxide complex in anhydrous pyridine. Workup with sodium hydroxide and washing in acetone results in a crude product with less than 1% inorganic impurity and ∼......
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......
Ethoxylation of detergent-range oxo alcohols derived from fischer-tropsch α-olefins
Journal of Surfactants and Detergents - Tập 7 - Trang 397-407 - 2015
Detergent-range alcohols currently are produced from a variety of basic raw materials including natural fats and oils, natural gas, and petroleum. Joining this list of basic raw materials is coal. Olefins are formed in the conversion from coal via the Fischer-Tropsch (F-T) process and are then converted to alcohol via the oxo process. This paper describes the characteristics of Fischer-Tropsch oxo......
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
Head group-modified sophorolipids: Synthesis of new cationic, zwitterionic, and anionic surfactants
Journal of Surfactants and Detergents - Tập 9 - Trang 57-62 - 2006
Amino acid-glycolipid conjugates were prepared using carbodiimide-mediated coupling methods. The amino acid units were multifunctional and possessed a para-aminobenzoic acid linker. The glycolipid used was a stearic sophoroside. The aim of preparing these modified sophorolipids was to increase their water solubility as well as to introduce sites at the polar head groups that permitted further chem......
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 of Modified Reduced Graphene Oxide nanosheet with Cationic Surfactant and its Dye Adsorption Ability from Colored Wastewater
Journal of Surfactants and Detergents - Tập 20 - Trang 1085-1093 - 2017
In this paper, reduced graphene oxide (rGO) nanosheet from graphite was synthesized using the top-down approach. The surface of rGO was modified by cetyltrimethylammonium bromide (CTAB) to prepare rGO/CTAB adsorbent for anionic dye removal. The prepared rGO/CTAB was characterized by XRD, FTIR, FE-SEM and TGA. The operation parameters (surfactant concentration, adsorbent dosage, pH and initial conc......
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......
Solubilizing and Hydrotropic Properties of Isosorbide Monoalkyl- and Dimethyl-Ethers
Journal of Surfactants and Detergents - Tập 12 - Trang 371-378 - 2009
Isosorbide is a diol readily obtained from starch that can be used as a polar building block for the synthesis of derivatives ranging from solvents to surfactants: dimethyl isosorbide (DMI) is a “sustainable solvent” already on the market, used notably in cosmetic and pharmaceutical formulations; monoalkyl derivatives of isosorbide are non-ionic hydrotropes that could be potential substitutes to s......
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
Tổng số: 965
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