KFU. Card publication. Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement

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DETERMINATION OF SESSILE DROP WETTING ANGLE BASED ON μCT WITHOUT THE DIRECT ANGLE MEASUREMENT

Form of presentation

Articles in international journals and collections

Year of publication

2023

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Authors, employees of KFU

Kadyrov Rail Ilgizarovich, author

Mukhamatdinov Irek Izailovich, author

Stacenko Evgeniy Olegovich, author

Bibliographic description in the original language

Kadyrov R. et al. Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement / Kadyrov, Rail, Mukhamatdinov, Irek, Statsenko, Evgeny // Langmuir. -. American Chemical Society, 2023. -. Vol. 39, No. 8. P. 2966–2973

Annotation

Wettability is an important factor that controls the position and transport of fluids in the porous structure of a hydrocarbon reservoir. Direct quantitative wettability measurement methods include determination of the contact angle. One of the popular laboratory methods for its measurement is the sessile drop method, where the droplet of liquid is set onto the solid sample surface and the angle between liquid and solid phases in a 2D profile image is measured using a high-resolution optical subsystem. However, this method has disadvantages connected with three complex factors: two-dimensionality of data, image resolution, and the presence of wetting domains on the solid surface. In this work, we propose a method based on 3D μCT scanning of a sessile drop on the surface of a material and determination of the value of the wetting angle using drop height and volume measurements. Since the contact angle is not measured directly, this makes it possible to obtain averaged contact angle values for the entire droplet and leads to more stable values for individual measurements in comparison with the standard optical method. The results demonstrate that contact angles obtained using the μCT method differ from the values obtained by various fitting techniques of the 2D optical method: μCT-values are higher for hydrophilic interaction by 4-6? and lower for hydrophobic interaction by 12-17?. Such differences are associated with the lower susceptibility of the proposed method to the influence of the gravitational effect, which leads to a flattening of the droplet shape and distortion of angle measurements on the 2D projections. However, the described method showed close contact angles for water drops on a polytetrafluoroethylene surface with values obtained in microgravity and can be helpful for its prediction. It also has relatively low sensitivity to the absolute values of the drop volume and drop segmentation errors.

Keywords

Amorphous materials, Contact angle, Liquids, Materials, Wetting

The name of the journal

LANGMUIR

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=298061&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Kadyrov Rail Ilgizarovich	ru_RU
dc.contributor.author	Mukhamatdinov Irek Izailovich	ru_RU
dc.contributor.author	Stacenko Evgeniy Olegovich	ru_RU
dc.date.accessioned	2023-01-01T00:00:00Z	ru_RU
dc.date.available	2023-01-01T00:00:00Z	ru_RU
dc.date.issued	2023	ru_RU
dc.identifier.citation	Kadyrov R. et al. Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement / Kadyrov, Rail, Mukhamatdinov, Irek, Statsenko, Evgeny // Langmuir. -. American Chemical Society, 2023. -. Vol. 39, No. 8. P. 2966–2973	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=298061&p_lang=2	ru_RU
dc.description.abstract	LANGMUIR	ru_RU
dc.description.abstract	Wettability is an important factor that controls the position and transport of fluids in the porous structure of a hydrocarbon reservoir. Direct quantitative wettability measurement methods include determination of the contact angle. One of the popular laboratory methods for its measurement is the sessile drop method, where the droplet of liquid is set onto the solid sample surface and the angle between liquid and solid phases in a 2D profile image is measured using a high-resolution optical subsystem. However, this method has disadvantages connected with three complex factors: two-dimensionality of data, image resolution, and the presence of wetting domains on the solid surface. In this work, we propose a method based on 3D μCT scanning of a sessile drop on the surface of a material and determination of the value of the wetting angle using drop height and volume measurements. Since the contact angle is not measured directly, this makes it possible to obtain averaged contact angle values for the entire droplet and leads to more stable values for individual measurements in comparison with the standard optical method. The results demonstrate that contact angles obtained using the μCT method differ from the values obtained by various fitting techniques of the 2D optical method: μCT-values are higher for hydrophilic interaction by 4-6? and lower for hydrophobic interaction by 12-17?. Such differences are associated with the lower susceptibility of the proposed method to the influence of the gravitational effect, which leads to a flattening of the droplet shape and distortion of angle measurements on the 2D projections. However, the described method showed close contact angles for water drops on a polytetrafluoroethylene surface with values obtained in microgravity and can be helpful for its prediction. It also has relatively low sensitivity to the absolute values of the drop volume and drop segmentation errors.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	Amorphous materials	ru_RU
dc.subject	Contact angle	ru_RU
dc.subject	Liquids	ru_RU
dc.subject	Materials	ru_RU
dc.subject	Wetting	ru_RU
dc.title	Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement	ru_RU
dc.type	Articles in international journals and collections	ru_RU