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......
Spontaneous Imbibition Experiments of Enhanced Oil Recovery with Surfactants and Complex Nano-Fluids
Journal of Surfactants and Detergents - Tập 20 - Trang 367-377 - 2017
Two types of porous media were analyzed with the intention of exploring alternative enhanced oil recovery methods. Core samples were taken from the Tensleep Formation of the Black Mountain Field in Hot Springs County, WY. The lithology is mainly sandstone and dolomite. The measured effective porosity values ranged from 13.0 to 18.0%, and permeabilities from 19 to 68 md. Production from the Tenslee......
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......
Vai trò của enzyme trong tính năng tẩy rửa hiện đại Dịch bởi AI
Journal of Surfactants and Detergents - Tập 1 - Trang 555-567 - 1998
Enzyme đã hỗ trợ hiệu quả trong việc phát triển và cải tiến các loại bột giặt gia dụng và công nghiệp hiện đại. Các loại enzyme chính trong bột giặt—protease, lipase, amylase và cellulase—mỗi loại đều mang lại những lợi ích cụ thể cho việc ứng dụng trong giặt giũ và rửa chén tự động. Về mặt lịch sử, protease là loại enzyme đầu tiên được sử dụng rộng rãi trong bột giặt. Ngoài việc nâng cao mức độ l......
#enzyme #bột giặt #protease #lipase #amylase #cellulase #hiệu quả làm sạch #môi trường
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
Physicochemical Studies on the Interfacial and Micellization Behavior of CTAB in Aqueous Polyethylene Glycol Media
Journal of Surfactants and Detergents - Tập 14 - Trang 563-576 - 2011
Interfacial and micellization behavior of cetyltrimethylammonium bromide (CTAB) have been studied in aqueous polyethylene glycol (PEG) mixed solvent systems of varying concentrations and molar mass. Interfacial behavior of CTAB was investigated by the equilibrium surface tension method. Conductance studies of surfactant solutions under different condition helped in determining the critical micelle......
Synthesis of N-(3-Oxapropanoxyl)dodecanamide and its Application in Surfactant-Polymer Flooding
Journal of Surfactants and Detergents - Tập 14 - Trang 317-324 - 2010
Alkali-surfactant-polymer (ASP) flooding has been considered to be one of the useful tertiary oil recovery techniques. However, field tests in China have revealed that serious side effects may occur due to using alkali. Thus alkali-free SP flooding is more favorable in China. Unfortunately, surfactants effective in ASP flooding are usually ineffective in the absence of alkali and new surfactants n......
Influence of a Zwitterionic Surfactant on the Surface Properties of Electroless Ni–P Coating on Mild Steel
Journal of Surfactants and Detergents - Tập 19 - Trang 1081-1088 - 2016
3-(N,N-Dimethyl myristyl-ammonio) propane sulfonate zwitterionic surfactant (C14-SB) which possessed both positive and negative charges was evaluated in the electroless Ni–P coating process. It was observed that the deposition rate, morphology and microhardness of the deposits were enhanced by the addition of C14-SB surfactant. The excess attractive forces from the negative head of C14-SB were str......
Surface-Active Properties and Antimicrobial Study of Conventional Cationic and Synthesized Symmetrical Gemini Surfactants
Journal of Surfactants and Detergents - Tập 15 - Trang 107-115 - 2011
Symmetrical gemini surfactants of cationic series α,ω-alkanediyl bis (dimethyl ammonium bromide) commonly referred as “m–s–m” have been synthesized. Spectral analysis was performed to confirm compound structures and purity. Conductivity and surface tension measurements provide better understanding of the micellization process. Their self-assembly behavior in aqueous solution is also discussed in d......
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