Results 31 to 40 of about 61,156 (300)

Investigation of the anionic-zwitterionic and anionic-nonionic surfactant mixtures on enhanced oil recovery using microfluidic devices

Petroleum Research
Surfactant flooding is one of the widely applied enhanced oil recovery methods. However, the application of a single surfactant is often insufficient to meet the demand for oil recovery.
Yafei Liu, Chenyue Ling, Yixin Luo, Na Liu, Gaoxin Li, Desheng Zhou   +5 more
doaj   +1 more source

Ionic behavior assessment of surface-active compounds from corn steep liquor by exchange resins [PDF]

, 2016
Depending on their ionic nature, biosurfactants can be classified as nonionic, anionic, cationic, or amphoteric. The ionic behavior of biosurfactants is an important characteristic that dictates their use in industrial applications.
Cruz, J. M., Moldes, A., Rincón Fontán, M., Rodriguez López, L., Vecino Bello, Xanel   +4 more
core   +2 more sources

Green Production of Anionic Surfactant Obtained from Pea Protein [PDF]

, 2011
A pea protein isolate was hydrolyzed by a double enzyme treatment method in order to obtain short peptide sequences used as raw materials to produce lipopeptides-based surfactants.
A Clemente, A Tsoukala, A Villanueva, AF Dexter, Bénédicte Portet, C Megias, C Rondel, Caroline Rondel, CN Mulligan, D Kitamoto, EA Pena-Ramos, FM Netto, Françoise Silvestre, H Frister, H Schägger, Isabelle Alric, J Vioque, Jean-François Blanco, JS Hamada, JY Lee, K Pommer, K Yasamatsu, LA Graaf De, LM Humiski, M Dall Aaslyng, M Karamac, M Le Gall, MC Marquez, MPC Silvestre, MR Infante, P Anastas, PM Nielsen, R Amarowicz, R Sanchez-Vioque, R Sanchez-Vioque, R Sinha, RT Swank, S Jung, TS Padmashree, UK Laemmli, Zéphirin Mouloungui   +40 more
core   +2 more sources

Influence of Added Surfactants on the Rheology and Surface Activity of Polymer Solutions

ChemEngineering
Steady-shear rheology and surface activity of surfactant–polymer solutions were investigated experimentally. Four different polymers were studied as follows: cationic hydroxyethyl cellulose, nonionic hydroxyethyl cellulose, nonionic guar gum, and anionic
Rajinder Pal, Chung-Chi Sun
doaj   +1 more source

Complexation of DNA with Cationic Surfactant

, 1999
Transfection of an anionic polynucleotide through a negatively charged membrane is an important problem in genetic engineering. The direct association of cationic surfactant to DNA decreases the effective negative charge of the nucleic acid, allowing the
Akhtar, Alexander, Anderson, Bennett, Blaese, Crooke, Debye, Farhood, Felgner, Felgner, Felgner, Fisher, Friedmann, Gao, Gorelov, Hodgson, Hope, Israelachvili, Juliano, Kuhn, Langer, Lasic, Levin, Manning, Manning, Marcia C. Barbosa, Paulo S. Kuhn, Shirahama, Sullivan, Verma, Yan Levin   +30 more
core   +2 more sources

Voltammetric determination of the critical micellar concentration of surfactants by using a boron doped diamond anode [PDF]

, 2010
The electrochemistry of three surfactants has been studied by voltammetry at boron doped diamond (BDD) electrode in sodium sulphate solutions. The electrochemical behaviour of these surfactants is characterized by an oxidation signal (peak or wave ...
Groenen Serrano, Karine, Racaud, Charlotte, Savall, André   +2 more
core   +2 more sources

Evaluation of the Effect of Surfactants on the Adsorption and Movement of Carbaryl in Soils of Divergent Texture

Adsorption Science & Technology, 2009
The adsorption and movement of carbaryl on soils in surfactant-free and surfactant (cationic, non-ionic, anionic) solutions of different critical micelle concentrations (CMCs) has been studied using batch equilibrium and soil thin layer chromatography ...
Rishi P. Singh, Syed A. Nabi, Sujata Singh   +2 more
doaj   +1 more source

Inhibition of mild steel corrosion and calcium sulfate formation in highly saline synthetic water by a newly synthesized anionic carboxylated surfactant

Egyptian Journal of Petroleum, 2018
A newly anionic surfactant; namely (2Z,2′Z)-4,4′-(ethane-1,2-diylbis((2-((4-dodecylphenyl)sulfonamido)ethyl)azanedinyl)bis(4-oxobut-2enoate), desined as Tetra-anionic surfactant was synthesized.
A.M. Al-Sabagh, M.A. Migahed, S.A. Sadeek, N.M. El Basiony   +3 more
doaj   +1 more source

Achiral dye/surfactant heteroaggregates for chiral sensing of phosphocholines [PDF]

, 2015
An investigation, based on absorption and circular dichroism spectroscopy, was carried out on assemblies formed in water upon the interaction of heteroaggregates, composed of dyes (Congo Red or Evans Blue) and cetyltrimethylammonium bromide (CTAB), with ...
Altieri, Barbara, Ceccacci, Francesca, Giansanti, Luisa, Mancini, Giovanna, Scipioni, Anita   +4 more
core   +1 more source

Symurban Nanocrystals for Advanced Anti-Pollution Skincare [PDF]

, 2020
Several of most common dermatoses worldwide, e.g., psoriasis and atopic dermatitis, are worsened in their clinical picture when the skin is regularly exposed to an increased air pollution level, e.g., particulate matter.
Köpke, Daniel, Pyo, Sung Min
core   +1 more source