Results 261 to 270 of about 22,970 (312)
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Journal of Surface Science and Technology, 2023
Herein, we have investigated the mixed micellar behavior of carboxylate anionic dimeric surfactants (CAD12 and CAD16) with commercial surfactants; anionic type i.e., sodium dodecyl sulfate, cationic i.e., cetyltrimethylammonium bromide and nonionic i.e., polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether.
Naveen Kumar, Rashmi Tyagi
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Herein, we have investigated the mixed micellar behavior of carboxylate anionic dimeric surfactants (CAD12 and CAD16) with commercial surfactants; anionic type i.e., sodium dodecyl sulfate, cationic i.e., cetyltrimethylammonium bromide and nonionic i.e., polyethylene glycol p-(1,1,3,3-tetramethylbutyl)-phenyl ether.
Naveen Kumar, Rashmi Tyagi
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Separation of anionic surfactants on anion exchangers
Journal of Chromatography A, 1995Abstract Two anion-exchange columns, PRP-X100 and IonPac AS11, that differ in anion-exchange capacity and porous properties are evaluated for applications in the separation of anionic surfactants such as alkane sulfonates, alkyl sulfates, and linear alkylbenzene sulfonates.
Ning Pan, Donald J. Pietrzyk
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The Anionic Phospholipids of Bovine Pulmonary Surfactant
Lipids, 2020AbstractThe only known compositional change in the phospholipids (PL) of pulmonary surfactant in response to a physiologic stimulus occurs around the time of birth. In most species, the predominant anionic PL changes from phosphatidylinositol (PtdIns) to phosphatidylglycerol (PtdGro).
Catherine J, Markin, Stephen B, Hall
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Interaction of Anionic Gemini Surfactants with Other Surfactants
Journal of Dispersion Science and Technology, 2014The interaction of anionic gemini surfactants with other surfactants (such as anionic, cationic, nonionic) was systematically overviewed, paying attention to synergism observed in various properties. These mixed systems were found to show remarkable synergism in micelle formation.
Sakshi Tyagi, Vinod Kumar Tyagi
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Adsorption of anionic surfactants onto sepiolite
Journal of Hazardous Materials, 2007Anionic surfactants constitute the main ingredients of detergents and a number of surfactant formulations used in a spectrum of diverse industries. The aim of this study is to examine the amenability of natural sepiolite to the adsorption of anionic surfactants, sodium dodecylsulfate (SDS) and sodium dodecylbenzenesulfonate (SDBS). Adsorption isotherms
Özdemir, Orhan +4 more
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Thermodynamics of Cationic and Anionic Surfactant Interaction
The Journal of Physical Chemistry B, 2012The interaction between positively and negatively charged linear surfactants is an interesting system for the understanding of the fundamental interplay of hydrophobic and ionic forces in lipid membranes and proteins. We used isothermal titration calorimetry to dissect the Gibbs free energies, enthalpies, entropies, and heat capacities of interaction ...
Povilas, Norvaišas +2 more
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Binding of sulfonephthalein anions to the micelles of an anionic surfactant
Journal of Molecular Liquids, 2000Abstract The applicability of the concept of ‘binding constants’ of ions to micelles for the description of acid-base behaviour of the dye bromothymol blue in sodium dodecylsulfate solutions is examined at ionic strength 0.2 mol dm−3 (NaCl). The values of ‘apparent’ ionization constants (Kaa) are determined.
N.O Mchedlov-Petrossyan +2 more
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Biodegradability of anionic surfactants
1995Like all surfactants, anionic surfactants (‘anionics’) are surface-active compounds being composed of a hydrophobic alkyl chain which is connected to one or two hydrophilic groups. In aqueous solutions, anionics dissociate into a negatively charged anion and the (positively charged) counterion.
J. Steber, H. Berger
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Journal of the American Oil Chemists' Society, 1963
ConclusionsA study of the sodium monoalkyl phosphates and sodium dialkyl phosphates has shown that the dialkyl esters, in general, possess markedly superior surfactant and detergent properties compared to the monoalkyl esters. This is true whether we are comparing equivalent mol wt mono‐ and diesters or when comparing those made from the same alcohols ...
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ConclusionsA study of the sodium monoalkyl phosphates and sodium dialkyl phosphates has shown that the dialkyl esters, in general, possess markedly superior surfactant and detergent properties compared to the monoalkyl esters. This is true whether we are comparing equivalent mol wt mono‐ and diesters or when comparing those made from the same alcohols ...
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Dyes and Pigments, 2005
Abstract The interaction between an anionic dye C.I. Reactive Orange 16 (RO16) and different surfactants, i.e., the anionic surfactant sodium dodecylsulfate (SDS) and nonionic surfactants polyoxyethylene ethers (CmPOEn; m = 12, 16 and 18, n = 4, 10 and 23) has been researched spectrophotometrically in a certain micellar concentration range.
Kartal, Ç, Akbas, H
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Abstract The interaction between an anionic dye C.I. Reactive Orange 16 (RO16) and different surfactants, i.e., the anionic surfactant sodium dodecylsulfate (SDS) and nonionic surfactants polyoxyethylene ethers (CmPOEn; m = 12, 16 and 18, n = 4, 10 and 23) has been researched spectrophotometrically in a certain micellar concentration range.
Kartal, Ç, Akbas, H
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