Low-rate dynamic and static contact angles and the determination of solid surface tensions

Kwok, Daniel Y.; Lin, R. Jun; Mui, M.; Neumann, A. W.

doi:10.1016/0927-7757(96)03590-x

Cited by 110 publications

(107 citation statements)

References 24 publications

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“…Contact angle measurements are often used as an empirical indicator of 'wettability' and interfacial tension. True contact angle determination of a liquid-solid-vapor system satisfies Young's equation, where the wetting tension (γ lv cosθ) is equivalent to the solid surface tension (γ sv ) minus the liquidsolid interfacial tension (γ lv ) [8]. However, in most cases the contact angle exhibits hysteresis for advancing and receding liquids is due to the roughness and heterogeneity of a solid surface [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Polystyrene/calcium phosphate nanocomposites: Contact angle studies based on water and methylene iodide

Thomas¹,

Abraham²,

Bandyopadhyay³

et al. 2008

Express Polym. Lett.

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Abstract. Polystyrene (PS) based nanocomposites were prepared by melt mixing in a Brabender Plasticoder with calcium phosphate as the nanofiller. These nanocomposites showed improvement in almost all physical properties. Contact angle measurements of the composites with water and methylene iodide were carried out. Various contact angle parameters such as total solid surface free energy, work of adhesion, interfacial free energy and spreading coefficient were analysed. The interaction parameter between the polymer and the liquids has been calculated using the Girifalco-Good's equation.

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Section: Introductionmentioning

confidence: 99%

Polystyrene/calcium phosphate nanocomposites: Contact angle studies based on water and methylene iodide

Thomas¹,

Abraham²,

Bandyopadhyay³

et al. 2008

Express Polym. Lett.

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“…Details of the methodology and experimental set-up can be found elsewhere. 40,41,52-54 A more recent development of the ADSA-P program is available. 55 Sessile drop experiments were performed by ADSA-P to determine contact angles.…”

Section: Methods and Proceduresmentioning

confidence: 99%

“…[45][46][47] With respect to the low-rate dynamic contact angle measurements by ADSA-P, liquid was supplied to the sessile drop from below the wafer surface using a motorized syringe device. 40,41 In order to facilitate such an experimental procedure, a hole of about 1 mm diameter was made, by using a diamond drill bit from Lunzer (New York, NY; SMS-0.027), in the center of each rectangular wafer surface before soaking in chromic acid. This strategy was proposed because of its potential for avoiding drop vibrations and for measuring true advancing contact angles without disturbing the drop profile.…”

Section: Materials (Solid Surface and Liquids)mentioning

confidence: 99%

Low-rate dynamic contact angles on poly(methyl methacrylate/ethyl methacrylate, 30/70) and the determination of solid surface tensions

Kwok

Neumann

1999

J. Polym. Sci. B Polym. Phys.

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“…For porous media, the advancing angle should be measured during the dynamic contact angle test to avoid imbibition effects. Kwok et al (1996) reported that the contact angle measured with the static contact angle test is the same as the angle measured with the dynamic test, according to Young's equation, if the measurement is captured at the moment that the oil droplet is formed on the rock surface.…”

Section: Contact Angle Measurementmentioning

confidence: 99%

Efficiency of enhanced oil recovery by injection of low-salinity water in barium-containing carbonate reservoirs

Park

Lee

et al. 2018

Pet. Sci.

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When low-salinity water containing sulfate ions is injected into carbonate reservoirs, rock dissolution and in situ precipitation occur, altering rock permeability and wettability. Particularly, when barium ions are present in formation water, they react chemically with SO 2À 4 , and BaSO 4 is precipitated. These reactions can cause a serious impact on the efficiency of enhanced oil recovery (EOR). Therefore, the main purpose of this study was to identify EOR efficiency induced by lowsalinity waterflooding (LSWF) when Ba 2? is present in carbonate reservoirs. From the experimental results, it was confirmed that the permeability calculated by the measured pressure difference was improved because of rock dissolution predominating over in situ precipitation for the case of low Ba 2? concentrations. In the analysis of wettability alteration through the measurements of relative permeabilities before and after LSWF, the higher Ba 2? concentration case consumed more SO 2À 4 in precipitating the BaSO 4 , resulting in weaker wettability alteration due to the reduction of sulfate activity. These phenomena ultimately influenced EOR efficiency, i.e., the oil recovery was greater for the lower Ba 2? concentration.

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Low-rate dynamic and static contact angles and the determination of solid surface tensions

Cited by 110 publications

References 24 publications

Polystyrene/calcium phosphate nanocomposites: Contact angle studies based on water and methylene iodide

Polystyrene/calcium phosphate nanocomposites: Contact angle studies based on water and methylene iodide

Low-rate dynamic contact angles on poly(methyl methacrylate/ethyl methacrylate, 30/70) and the determination of solid surface tensions

Efficiency of enhanced oil recovery by injection of low-salinity water in barium-containing carbonate reservoirs

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