Spreading of aqueous surfactant solutions on oil substrates: Superspreaders vs non-superspreaders

Kovalchuk, Nina M.; Sagisaka, Masanobu; Komiyama, Hinata; Simmons, Mark J.H.

doi:10.1016/j.jcis.2024.02.031

Cited by 3 publications

(2 citation statements)

References 40 publications

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“…Nonionic surfactants are used extensively in industrial cleaning, which requires surfactants that can quickly wet hard surfaces. Contact angle measurements are frequently employed for examining the diffusive capacity of surfactants . The wetting properties of C8 BDEn surfactants C6 GAEO9 and C8 GAEO9 are determined by measuring the contact angle of their respective aqueous solutions on a Parafilm surface.…”

Section: Resultsmentioning

confidence: 99%

“…Contact angle measurements are frequently employed for examining the diffusive capacity of surfactants. 51 The wetting properties of C8 BDEn surfactants C6 GAEO9 and C8 GAEO9 are determined by measuring the contact angle of their respective aqueous solutions on a Parafilm surface. Figure 9 and Figure S10 show the variation in the contact angle over time for C8 BDEn with different EO numbers at different concentrations and at a temperature of 25 °C.…”

Section: Table 1 Aggregation and Adsorption Parameters Of C8 Bden And...mentioning

confidence: 99%

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Coal-Based Branched Vicinal Diol Ethoxylates Versus Guerbet Alcohol Ethoxylates: Role of Tertiary Hydroxyl Groups

Lu,

Bao,

Dong

et al. 2024

Langmuir

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Branched surfactants exhibit a lower surface tension, excellent low defoaming performance, and better wetting ability compared with linear surfactants, making them promising for applications in industrial cleaning. In this study, 2-hexyl-1decene (C8 olefin dimer), obtained from the dimerization of 1octene, was used as the hydrophobe to synthesize branched nonionic surfactants via hydroxylation and ethoxylation. The hydroxylation of the C8 olefin dimer to synthesize 2-hexyldecane-1,2-diol (C8 BD) using H 2 O 2 and HCOOH was investigated systematically. Under the optimal reaction conditions (H 2 O 2 /C8 olefin dimer molar ratio: 1.5, HCOOH/C8 olefin dimer molar ratio: 4.0, reaction time: 10 h, reaction temperature: 50 °C), the conversion of the C8 olefin dimer and selectivity toward C8 BD were found to reach 99.96 and 79.89%, respectively. Further, branched nonionic surfactants (C8 BDEn) were synthesized via ethoxylation of C8 BD with ethylene oxide and characterized using FTIR, LCMS, 1 H NMR, and 13 C NMR techniques. The presence of a tertiary hydroxyl group in C8 BD increases the reactivity of the primary hydroxyl group, leading to a narrower range of products and lower residual substrate content. The physicochemical properties and surface properties of C8 BDEn with different degrees of ethoxylation at various concentrations were investigated and compared with those of commercially available Guerbet alcohol polyoxyethylene ethers (C8 GAEO9 and C6 GAEO9). The results show that, compared with C8 GAEO9 and C6 GAEO9, C8 BDE6 displayed a higher surface activity with a lower equilibrium surface tension (27.14 mN•m −1 ), superior wettability with a smaller contact angle (39.2°), better emulsification performance with a longer emulsification time of 548 s, and excellent foaming properties (initial foam volume of 11.6 mL). This strategy of utilizing coal-based α-olefins for the synthesis of branched nonionic surfactants presents a route to prepare value-added fine chemicals from coal-based resources.

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Section: Resultsmentioning

confidence: 99%

Section: Table 1 Aggregation and Adsorption Parameters Of C8 Bden And...mentioning

confidence: 99%

Coal-Based Branched Vicinal Diol Ethoxylates Versus Guerbet Alcohol Ethoxylates: Role of Tertiary Hydroxyl Groups

Lu,

Bao,

Dong

et al. 2024

Langmuir

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Research on the wellbore cleaning mechanism and prediction of cleaning ability of well-flushing fluid based on experiment-molecular dynamics simulation-machine learning

Song,

Li,

et al. 2025

Separation and Purification Technology

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Surfactant-Enhanced Spreading on Solids: Roles of the Surface Tension Gradient, Spreading Contact Angle, and Viscosity

Lee,

Murad,

Nikolov

2024

Langmuir

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Spreading of aqueous surfactant solutions on oil substrates: Superspreaders vs non-superspreaders

Cited by 3 publications

References 40 publications

Coal-Based Branched Vicinal Diol Ethoxylates Versus Guerbet Alcohol Ethoxylates: Role of Tertiary Hydroxyl Groups

Coal-Based Branched Vicinal Diol Ethoxylates Versus Guerbet Alcohol Ethoxylates: Role of Tertiary Hydroxyl Groups

Research on the wellbore cleaning mechanism and prediction of cleaning ability of well-flushing fluid based on experiment-molecular dynamics simulation-machine learning

Surfactant-Enhanced Spreading on Solids: Roles of the Surface Tension Gradient, Spreading Contact Angle, and Viscosity

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