Results 21 to 30 of about 14,785 (307)
Effect of Surfactant HLB Value on Enzymatic Hydrolysis of Chitosan
ChemEngineering, 2022 Nonionic surfactants are reported as being able to enhance enzyme stability and increase the conversion of enzymatic reactions. Surfactant-assisted enzymatic hydrolysis conversion is affected by surfactant HLB values. This work investigated the influence
Nur Rokhati +5 more
doaj +1 more source
Formation of microemulsions in mixed ionic-nonionic surfactant systems [PDF]
, 1998 Phase behavior of a mixed surfactant, sodium dodecyl sulfate + lipophilic poly(oxyethylene) dodecyl ether, in a brine-decane system was investigated at a constant brine/decane weight ratio equal to 1.
Kunieda, Hironobu +4 more
core +1 more source
Interactions Between Nonionic Surfactant Monomers, Hydrophobic Organic Compounds and Soil [PDF]
, 1992 Nonionic surfactant at aqueous-phase concentrations less than the CMC can affect the distribution of hydrophobic organic compounds (HOCs) in soil/aqueous systems. Sub-CMC levels of nonionic surfactant can enhance the apparent aqueous-phase HOC solubility,
Z. Liu, R. G. Luthy, D. A. Edwards
core +1 more source
Molecules, 2021 A novel, simple, low-cost, and user-friendly potentiometric surfactant sensor based on the new 1,3-dihexadecyl−1H-benzo[d]imidazol−3-ium-tetraphenylborate (DHBI–TPB) ion-pair for the detection of cationic surfactants in personal care products and ...
Nikola Sakač +6 more
doaj +1 more source
Toxicity of nonionic surfactants [PDF]
WIT Transactions on Ecology and the Environment, 2008 Nonionic surfactants are amphilic chemicals that enhance desorption and bioavailability by increasing solubility and dispersion of poorly soluble hydrocarbons and oils. This study was conducted to determine the toxicity of commercial nonionic surfactants by using the Microtox Acute Toxicity test which is a rapid, simple test for toxicity. The test uses
K. Jahan, S. Balzer, P. Mosto
openaire +1 more source
Mixed adsorption and surface tension prediction of nonideal ternary surfactant systems [PDF]
, 2005 To deal with the mixed adsorption of nonideal ternary surfactant systems, the regular solution approximation for nonideal binary surfactant systems is extended and a pseudo-binary system treatment is also proposed.
Zhou, X.-Q. +2 more
core +1 more source
A STUDY ON THE SOLUBILITY AND STABILITY OF DIAZEPAM AND NITRAZEPAM IN BUFFERED MIXTURES [PDF]
Bulletin of Pharmaceutical Sciences. Assiut University, 1983 Diazepam and Nitrazepam were solubilized by a series of commercial nonionic surfactant solutions buffered to pH 4, 6 and 7 at 35°C. These nonionic surfactants include Eumulgin C 1000 and C 1500 and Brij 35 and 58. It was found that the surfactant and the
A. Abdel-Zaher, M. Mesiha, A. Aboutaleb
doaj +1 more source
Removal of chromium (III) by two-aqueous phases extraction [PDF]
, 2009 Two-aqueous phase extraction of chromium (III) as a solute from their aqueous solutions was investigated using polyethoxylated alcohols (CiEj) as a biodegradable non-ionic surfactant in the presence of anionic sodium dodecylbenzene sulfonate (SDBS ...
Nasr-Eddine, Belkhouche +3 more
core +1 more source
Turbulent drag reduction in nonionic surfactant solutions [PDF]
, 2010 There are only a few studies on the drag-reducing effect of nonionic surfactant solutions which are nontoxic and biodegradable, while many investigations of cationic surfactant solutions have been performed so far.
タマノ, シンジ +5 more
core +1 more source
Energies, 2022 Surfactant flooding can mobilize trapped oil and change the wettability of the rock to be more hydrophilic, which increases the oil recovery factor. However, the selection of surfactants is difficult in the case of high salinity conditions. In this work,
Emil R. Saifullin +11 more
doaj +1 more source