Results 11 to 20 of about 99,021 (278)

Dicationic alkylammonium bromide gemini surfactants. Membrane perturbation and skin irritation. [PDF]

open access: yesPLoS ONE, 2011
Dicationic alkylammonium bromide gemini surfactants represent a class of amphiphiles potentially effective as skin permeation enhancers. However, only a limited number of studies has been dedicated to the evaluation of the respective cytotoxicity, and ...
João A S Almeida   +4 more
doaj   +2 more sources

Cross-Linking of Micelles by Gemini Surfactants [PDF]

open access: yesLangmuir, 2000
27 pages Latex, 14 postscript figures (5 colour ps figures), minor revision in the ...
Maiti, P.   +4 more
openaire   +4 more sources

Action of Monomeric/Gemini Surfactants on Free Cells and Biofilm of Asaia lannensis [PDF]

open access: yesMolecules, 2017
We investigated the biological activity of surfactants based on quaternary ammonium compounds: gemini surfactant hexamethylene-1,6-bis-(N,N-dimethyl-N-dodecylammonium bromide) (C6), synthesized by the reaction of N,N-dimethyl-N-dodecylamine with 1,6 ...
Anna Koziróg   +2 more
doaj   +2 more sources

Synthesis, surface activity, and corrosion inhibition capabilities of new non-ionic gemini surfactants [PDF]

open access: yesScientific Reports
Several environmentally acceptable non-ionic gemini surfactants are synthesized in this work using natural sources, including polyethenoxy di-dodecanoate (GSC12), polyethenoxy di-hexadecanoate (GSC16), and polyethenoxy di-octadecenoate (GSC18).
M. A. Deyab   +7 more
doaj   +2 more sources

New Asymmetric Gemini Triazole Surfactants with a Polar Triethylene Glycol Fragment: Synthesis and Physico-Chemical Properties

open access: yesMolecules
The present work is devoted to the synthesis and analysis of the physicochemical properties of new functionalized asymmetric Gemini surfactants. Herein, alkyl- and azide-substituted surfactants with symmetric and asymmetric substituents were synthesized ...
Ilshat Bogdanov   +5 more
doaj   +2 more sources

Self-Assembly Properties of Cationic Gemini Surfactants with Biodegradable Groups in the Spacer [PDF]

open access: yesMolecules, 2019
: Self-assembly properties of cationic gemini surfactants with biodegradable amide or ester groups in the spacer were investigated utilising time-resolved fluorescence quenching, dynamic light scattering and zeta potential measurements.
Martin Pisárčik   +4 more
doaj   +2 more sources

Synthesis of Novel Diammonium Gemini Surfactants

open access: yesMolecules, 2001
Selective synthesis of linear and gemini quaternary ammonium surfactants was accomplished by reacting the corresponding alkyl alcohols with 2-chloro-N,N-dimethylethylamine under basic conditions. The amines were quaternized with methyl chloride or methyl
Per H.J. Carlsen   +3 more
doaj   +2 more sources

Synthesis and characterization of geminis and implications of their micellar solution on ninhydrin and metal amino acid complex [PDF]

open access: yesRoyal Society Open Science, 2020
In our study, three gemini dicationic surfactants with different methylene group spacer (16-6-16, 16-5-16 and 16-4-16) have been synthesized and characterized in solution by 1H NMR spectroscopic technique.
Dileep Kumar   +2 more
doaj   +1 more source

Surfactants and enhanced oil recovery [PDF]

open access: yes, 1988
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.A large number of commercial and some novel Brunel synthesised surfactants have been studied with a view to their potential usefulness for enhanced oil ...
Pilc, Jennifer
core   +7 more sources

The Inhibitive Effects of Gemini Imidazoline Surfactants on Copper in Hydrochloric Acid Solution

open access: yesInternational Journal of Electrochemical Science, 2020
Gemini imidazoline surfactant was synthesized from the lauric acid and triethylenetetramine. The inhibitive effects of Gemini imidazoline surfactants on copper in hydrochloric acid solution were studied by electrochemical polarization and impedance ...
Xiqiu Wang   +5 more
doaj   +1 more source

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