Results 31 to 40 of about 6,875 (165)
Food Chemistry Advances, 2022 In this work, the interaction of ponceau 4R dye (P4R) with triple viz., anionic, nonionic and cationic micellar systems has been studied. The three surfactants employed were nonionic pluronic L-64 (PL-64), anionic sodium dodecyl sulphate (SDS) and ...
B. Sheelarani +3 more
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CerâmicaThe use of nonionic surfactants to modify the surface of bentonite is still quite restricted, although many advantages of that method can be found in the literature, like superior stability and low toxicity.
I. A. Silva +5 more
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Petroleum Science, 2017 Surfactants for enhanced oil recovery are important to study due to their special characteristics like foam generation, lowering interfacial tension between oleic and aqueous phases, and wettability alteration of reservoir rock surfaces.
Achinta Bera +3 more
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Scientific Reports, 2017 The need to extract oil from wells where it is embedded on the surfaces of rocks has led to the development of new and improved enhanced oil recovery techniques.
Ketzasmin A. Terrón-Mejía +2 more
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Membranes, 2017 The transformation of fog at a non-visible water layer on a membrane of low-density polyethylene (LDPE) and ethylene-vinyl acetate (EVA) was evaluated. Nonionic surfactants of major demand in the polyolefin industry were studied.
Miguel A. Waldo-Mendoza +4 more
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Increased Antibacterial Activity of Cephalosporins against Francisella Tularensis
Антибиотики и Химиотерапия, 2020 The aim of the study is to determine the effect of surfactants on the level of resistance of tularemia microbe to ß-lactam antibiotics (penicillins and cephalosporins). Material and methods.
N. V. Pavlovich, M. V. Tsimbalistova
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Nonionic Surfactants in Paper Electrophoresis
Clinical Chemistry, 1960 Abstract 1. A modification of the usual paper electrophoretic procedure has been made by including in the buffer medium 0.05 per cent of certain alkylphenyl ethers of polyethylene glycol. 2. This modified procedure yields electrophoretic patterns of blood serum proteins that may be subdivided into 12 fractions— albumin, α1-
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Wetting of Coal by Nonionic Surfactant and Mixtures of Nonionic and Anionic Surfactants [PDF]
Bulletin of the Chemical Society of Japan, 1983 Abstract The rates of wetting of coals with various carbon contents by aqueous nonionic surfactants and mixtures of nonionic and anionic surfactants were examined. It was found that the wetting rate of each coal decreased with an increase of the length of oxyethylene chain in the nonionic surfactant.
Kunio Esumi +2 more
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Emulsion Stability of Heavy Oil with Surfactants and Nanoparticles
Improved Oil and Gas Recovery, 2020 The recovered crude oil is often in form of an emulsion and the recovery is cut off when water to oil ratio exceeds a certain amount. The emulsions vary from water-in-oil to oil-in-water and the step that follows is to coalesce droplets to get two ...
Zainab Abdulmohsein +2 more
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Chemical Engineering Transactions, 2014 The bio-degradable vegetable oil based nonionic surfactants are generally used in the oil and petrochemical industry. This publication considers two combinations of various surfactants applied in enhanced oil recovery (EOR).
R. Nagy, L. Bartha, J. Toth, Á. Vágo
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