Adsorption of hexyl--bis(dodecyldimethylammonium bromide) gemini surfactant on silica and its effect on wettability

Cao, Meiwen; Song, Xiaoyan; Wang, Jinben; Wang, Yilin

doi:10.1016/j.jcis.2006.03.080

Cited by 34 publications

(19 citation statements)

References 39 publications

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“…Surfactants adsorption is often used to modify the properties of a solid surface. Wettability modification of solid surface by adsorbing surfactants has also been studied extensively and applied in various fields such as mineral flotation, lubrication, oil recovery, dewatering of fine coal and so on [5][6][7][8][9][10]. These researches suggest that the surfactant molecules adsorbed on solid surface lead to wettability alteration of water-wet or oil-wet solid surfaces due to the hydrophobic tails or hydrophilic heads exposure, which provides theoretical support for our study.…”

Section: Introductionsupporting

confidence: 75%

Wettability Modification of Lignite by Adsorption of Dodecyl Based Surfactants for Inhibition of Moisture Re‐adsorption

Liu

2017

J Surfact & Detergents

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In order to restrain moisture re-adsorption of dried lignite, a series of dodecyl based surfactants with various hydrophilic heads including dodecyltrimethylammonium bromide (DTAB), sodium dodecyl sulfonate (SDS), dodecyl nonaethoxyl ether (C 12 EO 9 ) and a gemini surfactant (G12-2-12) were used to adsorb on lignite surface for wettability modification. The adsorption isotherms and zeta potential were determined to study the adsorption process. Lagergren-first-order and pseudo-second-order kinetics models were used to simulate the adsorption kinetics. The modified lignite was characterized by FTIR spectroscopy, and the wettability of it was evaluated by the wetting heat and moisture re-adsorption ratio. The results indicate that hydrophilic heads of surfactants play an important role in adsorption mechanisms and structures of their adsorption layers on lignite surface, which are responsible for wettability alteration. Four surfactants produce different effects on restraining moisture re-adsorption of lignite: the effect of cationic surfactants is better and worse for anionic surfactant SDS, while the nonionic surfactant C 12 EO 9 shows intermediate behavior. But with the formation of double-layer adsorption, hydrophilic headgroups of surfactant face outward, which causes hydrophilicity of lignite to rise again. Combining adsorption situations and wettability modification effects, the relationship between molecular orientation of four surfactants on a lignite surface and wettability reversal of lignite are discussed.

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Section: Introductionsupporting

confidence: 75%

Wettability Modification of Lignite by Adsorption of Dodecyl Based Surfactants for Inhibition of Moisture Re‐adsorption

Liu

2017

J Surfact & Detergents

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“…The dimeric surfactants have CMC values 10 to 100 times less than those of monomeric surfactants [112]. Most of the adsorption studies are of cationic gemini surfactants on silica [63,[111][112][113][114][115][116][117] and few studies on clay and lime stone [118,119]. Studies on anionic gemini surfactants are also very few [54,119,120].…”

Section: Gemini Surfactant Adsorptionmentioning

confidence: 99%

Surfactant-enhanced remediation of organic contaminated soil and water

Paria

2008

Advances in Colloid and Interface Science

485

237

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“…Our group has studied the adsorption of hexyl-α, ω-bis-(dodecyldimethylammonium bromide) (C 12 C 6 C 12 Br 2 ) gemini surfactant on silica surface [28]. The experiment was performed on a silica surface for 35 min.…”

Section: Surfactant Adsorptionmentioning

confidence: 99%

Solvent effect on the aggregate of fluorinated gemini surfactant at silica surface

Song

Wang

et al. 2006

Journal of Colloid and Interface Science

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Adsorption of hexyl--bis(dodecyldimethylammonium bromide) gemini surfactant on silica and its effect on wettability

Cited by 34 publications

References 39 publications

Wettability Modification of Lignite by Adsorption of Dodecyl Based Surfactants for Inhibition of Moisture Re‐adsorption

Wettability Modification of Lignite by Adsorption of Dodecyl Based Surfactants for Inhibition of Moisture Re‐adsorption

Surfactant-enhanced remediation of organic contaminated soil and water

Solvent effect on the aggregate of fluorinated gemini surfactant at silica surface

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