Results 21 to 30 of about 29,099 (296)

Computational studies on the behaviour of anionic and nonionic surfactants at the SiO$_{2}$ (silicon dioxide)/water interface [PDF]

open access: yes, 2016
Molecular dynamics simulations to study the behaviour of anionic (Sodium Dodecylsulfate, SDS) and nonionic (Monooleate of Sorbitan, SPAN80) surfactants close to a SiO$_{2}$ (silicon dioxide) surface were carried out. Simulations showed that a water layer
Dominguez, H., Núñez-Rojas, E.
core   +2 more sources

Extraction of humic acid by coacervate: Investigation of direct and back processes [PDF]

open access: yes, 2012
The two aqueous phases extraction process is widely used in environmental clean up of industrial effluents and fine chemical products for their reuse.
Derriche, Zoubir   +4 more
core   +3 more sources

Nonionic polymer surfactants [PDF]

open access: yesJournal of Polymer Science: Polymer Chemistry Edition, 1982
AbstractNonionic water‐soluble polymeric surfactants have been prepared by addition of long‐chain n‐alkyl epoxides to nonionic cellulose ethers. The polymers exhibit properties which can be explained by interchain association. The relationship between hydrocarbon‐modifier carbon number and the onset of association follows a linear relation analogous to
openaire   +1 more source

Studies in Asymmetric Epoxidation of Chalcone Using Quaternary Salts and Nonionic Surfactants Based on 6-Amino-6-deoxy-glucose as Chiral Phase Transfer Catalysts

open access: yesE-Journal of Chemistry, 2011
Quaternary salts and nonionic surfactants based on 6-amino-6-deoxy-glucose were explored as chiral phase transfer catalysts for the asymmetric epoxidation of chalcone.
Lalit Sharma   +2 more
doaj   +1 more source

Effective critical micellar concentration of a zwitterionic detergent: A fluorimetric study on n-dodecyl phosphocholine [PDF]

open access: yes, 2010
We have investigated the effect of ionic strength on the aggregation behavior of n-dodecyl phosphocholine. On the basis of the classical Corrin-Harkins relation, the critical micellar concentration of this detergent decreases with a biphasic trend on ...
PALLADINO, PASQUALE   +2 more
core   +1 more source

Removal of chromium (III) by two-aqueous phases extraction [PDF]

open access: yes, 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 ...
Amine, Didi Mohamed   +3 more
core   +1 more source

Effects of nonionic surfactants on soil structure, soil properties and soil water flow

open access: yesGuan'gai paishui xuebao
【Objective】Nonionic surfactants are soil amendments that could modify water surface tension, alter soil repellency, and affect water flow and distribution in soil.
SHENG Feng, LI Zhongrun, ZHANG Bin
doaj   +1 more source

Study on wetting mechanism of nonionic silicone surfactant on coal dust

open access: yesHeliyon, 2023
Coal dust disasters are serious in coal mining. The use of nonionic surfactants can effectively improve the wettability of coal dust and reduce the content of suspended coal dust in the air.
Kai Wang   +5 more
doaj   +1 more source

Toxicity of nonionic surfactants [PDF]

open access: yesWIT 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

Surfactants, its applications and effects on environment

open access: yesBibechana, 2010
Surfactant is being considered as a very demandable molecule in the field of chemistry. This paper reviews most important factors especially the uses of surfactants and their effects on environment.
SK Shah, A Bhattarai, SK Chatterjee
doaj   +3 more sources

Home - About - Disclaimer - Privacy