Results 251 to 260 of about 88,877 (298)
Some of the next articles are maybe not open access.
Nonionic Fluorosilicone Surfactants
Journal of Colloid and Interface Science, 1993Abstract New fluorosilicone surfactants have been prepared. The focus has been on branched disiloxane and trisiloxane hydrophobes having 3,3,3-trifluoropropyl and 3,3,4,4,5,5,6,6,6-nonafluorohexyl radicals with poly(oxyethylene) hydrophiles. Their performance as aqueous surfactants was evaluated and compared to conventional methylsiloxane surfactants
Hideki Kobayashi, Michael J. Owen
openaire +1 more source
Nonionic surfactants in cylindrical hydrophilic pores
Progress in Colloid & Polymer Science, 1997A mean field lattice (MFL) theory has been used to study the adsorption behaviour of nonionic surfactants in hydrophilic cylindrical pores. The theory predicts that with decreasing pore radius the absorbed amount decreases. Moreover, the step in the adsorption isotherm, which is a first-order phase transition in the mean field approximation, shifts to ...
Huinink, H.P. +3 more
openaire +2 more sources
Wettability Alteration of Calcite by Nonionic Surfactants
Langmuir, 2018The process of selecting an effective surfactant for wettability alteration is dependent on a number of factors, including mineral type, temperature, salinity, and nature of adsorbed oil and ultimately how the molecular structure of the surfactant interacts with all of these.
Soumik Das +4 more
openaire +2 more sources
Adsorption and micellar properties of a mixed system of nonionic–nonionic surfactants
Journal of Colloid and Interface Science, 2005We study the surface adsorption and bulk micellization of a mixed system of two nonionic surfactants, namely, ethylene glycol mono-n-dodecyl ether (C12E1) and tetraethylene glycol mono-n-tetradecyl ether (C14E4), at different mixing ratios at 15 degrees C.
Md Nazrul, Islam, Teiji, Kato
openaire +2 more sources
Journal of Dispersion Science and Technology, 2007
A quantitative structure property relationship; QSPR was preformed as a means to predict critical micelle concentration of nonionic surfactants via correlating properties to parameters calculated from molecular structure. Such parameters; molecular weight, M w , hydrophobic‐hydrophilic fragments molecular weight ratio, χ, polarizability, α, partition ...
openaire +1 more source
A quantitative structure property relationship; QSPR was preformed as a means to predict critical micelle concentration of nonionic surfactants via correlating properties to parameters calculated from molecular structure. Such parameters; molecular weight, M w , hydrophobic‐hydrophilic fragments molecular weight ratio, χ, polarizability, α, partition ...
openaire +1 more source
Bending Elasticity of Nonionic Surfactant Layers
Langmuir, 2009A novel approach to evaluate the bending elasticity of monolayers formed by nonionic surfactants with a rigid head group is introduced by means of considering head group repulsion as derived from the free energy of mixing rigid hydrophilic head groups with surrounding solvent molecules as well as contributions related to the hydrophobic tails. Explicit
openaire +2 more sources
Lipase Catalysis in Presence of Nonionic Surfactants
Applied Biochemistry and Biotechnology, 2019Lipase can catalyze varieties of reactions at the interface of aqueous and organic phase. Among various alternatives to modify catalytic performance of lipase, the addition of surfactants, particularly nonionic surfactants, has been widely studied.
openaire +2 more sources
Phytotoxicity of nonionic surfactants to sugarcane
Bulletin of Environmental Contamination and Toxicology, 1984M, Singh, J R, Orsenigo
openaire +2 more sources