A family of alkyl sulfate gemini surfactants. 1. Characterization of surface properties

Gao, Bo; Sharma, Mukul M.

doi:10.1016/j.jcis.2013.04.043

Cited by 61 publications

(32 citation statements)

References 22 publications

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“…Zhu [113] studied a homologous series of anionic geminis with different spacer nature, and found that a hydrophilic, flexible spacer was more conducive to the formation of micelle than a hydrophobic, rigid spacer, thus giving more stable micelles and a better surfactivity. In Scheme 2, several gemini (dimeric) surfactants with different structures and a gemini-type surfactant with three hydrophobic and hydrophilic groups are given [114][115][116][117][118][119][120]. These molecular structures demonstrate the variability of gemini surfactant chemistry and their potential for high-performance soil washing surfactant.…”

Section: A C C E P T E D M Amentioning

confidence: 99%

Use of surfactants for the remediation of contaminated soils: A review

Mao

Jiang

Xiao

et al. 2015

Journal of Hazardous Materials

669

284

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Section: A C C E P T E D M Amentioning

confidence: 99%

Use of surfactants for the remediation of contaminated soils: A review

Mao

Jiang

Xiao

et al. 2015

Journal of Hazardous Materials

669

284

View full text Add to dashboard Cite

“…where R represents the gas constant and T the absolute temperature (K). dc=d log C ð Þ T represents the slope of the surface tension c vs. logc below the CMC at a constant temperature T. The constant n takes the value 2 for an ionic surfactant where the surfactant ion and counterion are univalent and the value 3 for a gemini surfactant made up of a divalent surfactant ion and two univalent counterions, hence n = 3 in our system [19,20].…”

Section: Surface Activity Of C N -Dadsmentioning

confidence: 99%

Sulfated Zirconium Catalyst for Synthesis of Dialkylated Diphenylether Disulfonate Gemini Surfactants

Jiao

Liu

Wang

et al. 2015

J Surfact & Detergents

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Dialkylated diphenylether disulfonate with different alkyl chain lengths (C n -DADS, n = 8, 10 and 12) has been synthesized by Friedel-Crafts alkylation of olefins (C 8 , C 10 and C 12 ) and diphenyl oxide, followed by sulfonation and neutralization with fuming sulfuric acid. Sulfated zirconia solid acids were prepared and used to catalyze the alkylation reaction. The structure of sulfated zirconia solid acids was identified by infrared spectroscopy. The title compounds were confirmed by infrared spectroscopy and electrospray ionization-mass spectrometry. Equilibrium surface tension measurements show that the critical micelle concentration (CMC) decreases with an increase in chain length, and the surface tension at CMC (c cmc ) of C 8 -DADS is the lowest. The minimum area per molecule (A min ) values of C n -DADS increase, while the surface excess concentration (C max ) values decrease with the increase of the alkyl chain length. C 10 -DADS has the highest pC 20 and CMC/C 20 among C n -DADS.

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“…In order to increase the performance of surfactant formulations and provide new properties to interface or in solution, a new class of surfactants has unremittingly appeared (Castro et al, 2006;Gao and Sharma, 2013;Kang et al, 2018;Sakai et al, 2014;Tan and Xiao, 2008). One of these classes is the Gemini surfactants, which have two hydrophilic headgroups and two hydrophobic groups per molecule.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of pH‐Dependent Gemini Surfactants Containing Multiple Carboxyl Groups

Qiao

et al. 2020

J Surfact & Detergents

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A series of Gemini surfactants N,N″‐dialkyl‐N,N′,N″‐tripropionate diethylenetriamine (referred as DTPDT‐n, where n is the length of the hydrocarbon chain, n = 10, 12, 14) were synthesized, which have three carboxylic head‐groups and two hydrophobic alkane chains. The products were characterized by means of nuclear magnetic resonance and mass spectrometry. The physicochemical properties of DTPDT‐n surfactants with different hydrocarbon chain lengths were studied such as isoelectric point, surface activities, emulsifying properties, and foam properties. It is showed that these compounds exhibit pH‐dependent protonation‐deprotonation behavior. The isoelectric points of DTPDT‐n surfactants are between 3.40 and 10.90. The critical micellar concentration (cmc) of all three surfactants are lower than the corresponding monomeric surfactants (single head group, single‐chain), especially DTPDT‐14, whose cmc can reach 2.29 × 10−5 mol/L. With an increase in the length of the alkyl chain, the solubility of the surfactants decreases and the surface tension of the three surfactants at cmc increases. In consideration of pH, all of three surfactants appear better emulsifying capacity and foaming property under weak alkaline conditions. DTPDT‐14 has the best performance of emulsifying capacity among the three surfactants. DTPDT‐10 has excellent foaming ability and foam stability.

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A family of alkyl sulfate gemini surfactants. 1. Characterization of surface properties

Cited by 61 publications

References 22 publications

Use of surfactants for the remediation of contaminated soils: A review

Use of surfactants for the remediation of contaminated soils: A review

Sulfated Zirconium Catalyst for Synthesis of Dialkylated Diphenylether Disulfonate Gemini Surfactants

Synthesis and Properties of pH‐Dependent Gemini Surfactants Containing Multiple Carboxyl Groups

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