Adsorbed film of n-tetradecylphosphocholine at the tetradecane/water interface studied by interfacial tensiometry and X-ray reflection

Hiraki, Shinya; Goto, Tazuko K.; Tanida, Hajime; Nitta, Kiyofumi; Ina, Toshiaki; Uruga, Tomoya; Matsubara, Hiroki; Aratono, Makoto; Takiue, Takanori

doi:10.1016/j.colsurfa.2015.06.033

Cited by 4 publications

(2 citation statements)

References 33 publications

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“…18.6 mJ/m 2 from the Q sA and Ṽ sA values. The so-obtained γ sM and γ sA values are close to the interfacial tensions between water and C 10 –C 16 alkanes in the presence of surfactants. , From the Q sw and Ṽ site values, the γ sw value was estimated to be ca. 42.2 mJ/m 2 , which is close to the literature-reported values of the surface tension of silica (ca.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Cetylpyridinium Chloride at Silica Nanoparticle/Water Interfaces (II): Dependence of Surface Aggregation on Particle Size

Liu

Song

et al. 2022

Langmuir

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Herein, we report a thermodynamic model that relates the adsorption (aggregation) parameters of surfactants at solid/liquid interfaces to particle radius (r). The adsorption (aggregation) parameters include adsorption amounts, equilibrium constants (or the standard Gibbs free energy changes), the critical surface micelle concentration (csmc), and the average aggregation number of surface micelles (n). The model predicts the size dependence of the surface aggregation of surfactants, which is determined by the changes in the interfacial tension and the molar volume of surface components caused by adsorption. In addition, the adsorption of cetylpyridinium chloride (CPyCl), a cationic surfactant, on silica nanoparticles with different r values (ca. 6−61 nm) was determined at 298 K and pH 4, showing an obvious size dependence, consistent with the prediction of the model. With an increase in r, the adsorption isotherm changes from the double-plateau type to the Langmuir type, accompanied by obvious changes in the adsorption parameters. The size-dependent adsorption data can be well described using the model equations, indicating that the model presented here is acceptable. In addition, the model can extract information on the interfacial tensions from adsorption data. We think that the model deepens the understanding of the aggregation phenomena of surfactants at solid/liquid interfaces.

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Section: Resultsmentioning

confidence: 99%

Adsorption of Cetylpyridinium Chloride at Silica Nanoparticle/Water Interfaces (II): Dependence of Surface Aggregation on Particle Size

Liu

Song

et al. 2022

Langmuir

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show abstract

“…[16][17][18][19] Subsequently, other methods such as ellipsometry, surface rheology, Brewster angle microscopy, X-ray and neutron reflectometry were used to obtain the thickness, homogeneity, viscosity and compressibility of surface films. 16,[20][21][22] The majority of these studies were carried out with insoluble molecules and at the air-water interface due to difficulties posed by the oil-water interface and soluble molecules. It is very difficult to interpret molecular level details using these experimental techniques at liquid interfaces composed of polymers.…”

Section: Introductionmentioning

confidence: 99%

Complex role of chemical nature and tacticity in the adsorption free energy of carboxylic acid polymers at the oil–water interface: molecular dynamics simulations

Kurapati,

Natarajan

2023

Phys. Chem. Chem. Phys.

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Evolution of oil/water interface in the presence of SDBS detected by dual polarization interferometry

Duan

Ding

Wang

et al. 2018

Applied Surface Science

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Adsorbed film of n-tetradecylphosphocholine at the tetradecane/water interface studied by interfacial tensiometry and X-ray reflection

Cited by 4 publications

References 33 publications

Adsorption of Cetylpyridinium Chloride at Silica Nanoparticle/Water Interfaces (II): Dependence of Surface Aggregation on Particle Size

Adsorption of Cetylpyridinium Chloride at Silica Nanoparticle/Water Interfaces (II): Dependence of Surface Aggregation on Particle Size

Complex role of chemical nature and tacticity in the adsorption free energy of carboxylic acid polymers at the oil–water interface: molecular dynamics simulations

Evolution of oil/water interface in the presence of SDBS detected by dual polarization interferometry

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