Results 111 to 120 of about 6,875 (165)

Competitive Adsorption of Nonionic Surfactant and Nonionic Polymer on Silica

Langmuir, 2007
Competitive adsorption of the nonionic polymer poly(ethylene oxide) (PEO) and the nonionic surfactant of the type poly(ethylene oxide) alkyl ether from aqueous solutions on a silica surface is examined. From one-component solutions, both species readily adsorb onto silica and, in the bulk of mixed (two-component) solutions, polymer-surfactant complexes
Postmus, B.R., Leermakers, F.A.M., Koopal, L.K., Cohen Stuart, M.A.   +3 more
openaire   +2 more sources

Nonionic Surfactants

2000
Structure and nomenclature of surface-active alkyl glucosides synthesis of alkyl glucosides and alkyl polyglucosides chemical properties and derivatization of surface-active alkyl glucosides and alkyl polyglucosides surfactant properties analytical chemistry of alkyl polyglucosides ecology toxicology and dermatology application.
openaire   +1 more source

Biodegradation of nonionic surfactants

Journal of the American Oil Chemists' Society, 1984
AbstractThis paper discusses the biodegradability of alcohol‐based nonionics measured by the recommended legislative test procedures and how the results obtained are affected by the chemical structure of the surfactant, and thus provides guidance on the selection of materials.
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Activity of Nonionic Surfactants

Russian Journal of Applied Chemistry, 2001
The surface activity of block copolymers of ethylene and propylene oxides, based on ethylenediamine, mono(ethylene glycol), and triethanolamine, was studied. Adsorption characteristics of the investigated compounds at the water-air interface are estimated.
B. R. Fakhrutdinov, O. A. Varnavskaya, L. K. Khvatova, N. A. Lebedev, I. N. Diyarov, R. Z. Fakhrutdinov   +5 more
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Dissolution Rates of Pure Nonionic Surfactants

Langmuir, 2000
no ...
Chen, B. H., Miller, C. A., Walsh, J. M., Warren, P. B., Ruddock, J. N., Garrett, P. R., Argoul, Françoise, Léger, Christophe   +7 more
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Nonionic surfactants in cylindrical hydrophilic pores

Progress in Colloid & Polymer Science, 1997
A 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., de Keizer, A., Leermakers, F.A.M., Lyklema, J.   +3 more
openaire   +2 more sources

Interfaces Charged by a Nonionic Surfactant

The Journal of Physical Chemistry B, 2018
Highly hydrophobic, water-insoluble nonionic surfactants are often considered irrelevant to the ionization of interfaces at which they adsorb, despite observations that suggest otherwise. In the present study, we provide unambiguous evidence for the participation of a water-insoluble surfactant in interfacial ionization by conducting electrophoresis ...
Joohyung Lee, Zhang-Lin Zhou, Sven Holger Behrens   +2 more
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Oxidation of Self-Organized Nonionic Surfactants

Langmuir, 2004
Nonionic surfactants containing a polyoxyethylene headgroup are known to slowly undergo oxidative degradation when exposed to air. The oxidation, which starts by abstraction of a hydrogen atom from a methylene group in alpha-position to an ether oxygen, is accelerated by metal ions.
Fredrik, Currie, Martin, Andersson, Krister, Holmberg   +2 more
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Chapter 4 | Nonionic Surfactants

2021
This chapter describes nonionic surfactants, their synthesis, and applications. This group of surfactants is one of the largest with respect to use. Most nonionics are produced by alkylation of hydroxyl compounds (e.g., fatty alcohols and alkylphenols, fatty amines, and polyhydric alcohols), such as glycol, glycerol, and carbohydrates (sugars).
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Nonionic surfactant effects on pentachlorophenol biodegradation

Water Research, 2002
Several potential mechanisms of surfactant-induced inhibition of pentachlorophenol (PCP) biodegradation were tested using a pure bacterial culture of Sphingomonas chlorophenolicum sp. Strain RA2. PCP degradation, glucose degradation, and oxygen uptake during endogenous conditions and during glucose degradation were measured for batch systems in the ...
Todd L, Cort, Myoung-Suk, Song, Angela R, Bielefeldt   +2 more
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