Effect of branching on the interfacial properties of nonionic hydrocarbon surfactants at the air–water and carbon dioxide–water interfaces

Adkins, Stephanie; Chen, Xi; Nguyen, Quoc P.; Sanders, Aaron W.; Johnston, Keith P.

doi:10.1016/j.jcis.2009.12.059

Cited by 121 publications

(103 citation statements)

References 78 publications

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“…However, large interfacial tension reductions at the oil-water interface have been observed for iron oxide nanoparticles coated with amphiphilic copolymers [27,29]. Whereas the effect of a wide variety of surfactant molecules on the lowering of c at the CO 2 -water interface has been studied in detail [8,13,18], analogous studies for nanoparticles have not been reported. At typical reservoir temperatures and pressures, c is much smaller for the C/W interface, only $20 mN/m, than the O/W interface.…”

Section: Discussionmentioning

confidence: 99%

“…The methylsilyl ligands on the partially hydrophobic silica particles are hydrophobic, have low cohesive energy density, and are thus favorably solvated by CO 2 [18]. Therefore, a decrease in% SiOH simultaneously decreases A PW (increasing c PW ), decreases A PP , and increases A PC (decreasing c PC ).…”

Section: Models For Partitioning Of Nanoparticles In Bulk Phases and mentioning

confidence: 99%

“…The weak solvent strength of CO 2 causes A TC to be very small compared to A HW . Thus, a key to increasing the HCB of a surfactant is to minimize the tail-tail interactions, A TT , which can be achieved by using surfactants that contain ''stubby'', low cohesive energy density tails [9,[18][19][20][21], e.g. through the use of branching.…”

Section: Introductionmentioning

confidence: 99%

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Nanoparticle-stabilized carbon dioxide-in-water foams with fine texture

Worthen

Bagaria

Chen

et al. 2013

Journal of Colloid and Interface Science

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196

131

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Section: Discussionmentioning

confidence: 99%

Section: Models For Partitioning Of Nanoparticles In Bulk Phases and mentioning

confidence: 99%

See 1 more Smart Citation

Nanoparticle-stabilized carbon dioxide-in-water foams with fine texture

Worthen

Bagaria

Chen

et al. 2013

Journal of Colloid and Interface Science

Self Cite

196

131

View full text Add to dashboard Cite

“…For decades, extensive studies were devoted to define the effect of the surfactant tail architecture [13,15,24,50,51]. However, only few works have alluded to the effects of hydrophilic-headgroup modifications on surfactant performance in CO2 [36,38,39].…”

Section: Discussionmentioning

confidence: 99%

Economical and Efficient Hybrid Surfactant with Low Fluorine Content for the Stabilisation of Water-in-CO2 Microemulsions

Mohamed

Ardyani

Sagisaka³

et al. 2015

The Journal of Supercritical Fluids

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The article addresses an interesting issue in the development of hybrid surfactants for waterin-CO2 (w/c) microemulsion stabilisation: the role of surfactant headgroup on the surfactant performance. The synthetic procedure, aqueous properties, and phase behaviour of a new hybrid sulfoglutarate surfactant are described. The compound resembles sulfosuccinate surfactants, commonly used to stabilize w/c phases, but with an extra methylene group incorporated into the hydrophilic headgroup. For comparison purposes, the related hydrocarbon (AOT14 and AOT14GLU) and fluorocarbon (di-CF2 and di-CF2GLU) surfactants are used to form w/c microemulsions. In general, the aqueous properties and w/c phase stability of both sulfoglutarates and sulfosuccinates are found to be similar, which shows the secondary role of the hydrophilic headgroup. Interestingly, the newly synthesised hybrid CF2/AOT14GLU (sodium (4H,4H,5H,5H,5H-pentafluoropentyl-2,2-dimethyl-1-propyl)-2-sulfoglutarate) proved to be more efficient than the normal sulfosuccinate, hybrid CF2/AOT14 (Ptrans = 383 bar, γcmc = 26.8 mN m -1 ) in terms of the aqueous behaviour and w/c phase stability.Switching to the sulfoglutarate compound, hybrid CF2/AOT14GLU (Ptrans = 232 bar, γcmc = 20.6 mN m -1 ) more effectively decreases the air-water surface tension by about ~ 5 mN m -1 as compared to the sulfosuccinate. High-pressure phase behaviour studies show significant improvements in stabilising w/c microemulsions at much lower cloud pressures. The results indicate distinct effects of the headgroup structure on the phase behaviour and physicochemical properties, particularly for this hybrid surfactant.

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“…The cloud points of ethoxylated nonionic surfactants are consistently way below 100°C (Adkins et al 2010), and the solubility of most nonionic surfactants decreases in brine as the salinity increases (Rosen and Kunjappu 2012). There are reports of several laboratory scale tests and field trials using anionic sulfate and sulfonate surfactants for high-salinity limestone reservoirs (Hirasaki et al 2008;Levitt et al 2006).…”

Section: Surfactant Foamsmentioning

confidence: 99%