Thermodynamic modeling of contact angles on rough, heterogeneous surfaces

“…18) Since the positions of the TPCL in metastable thermodynamic states are independent of H 0 , the corresponding contact angle observed from the direction parallel to the lay ª // is affected by a, b and ª s . 14) Based on the analysis from the orthogonal directions, surfaces' roughness characterized by the geometrical morphology and chemical properties of materials characterized by ª s exert effects on anisotropic wetting.…”

Section: Theoretical Analysismentioning

confidence: 99%

Effects of Chemical Properties and Roughness on Anisotropic Wetting Observed on Machined Surfaces

Shu

Yande

et al. 2015

Mater. Trans.

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Anisotropic wetting of machined surfaces occurs in many industrial applications, but there has not been much work on it. In this paper, based on the analysis of the influencing factors of anisotropic wetting from the orthogonal directions, experiments investigating anisotropy wetting have been performed on machined surfaces with a wide range of roughness on four kinds of materials. It is found that roughness and chemical properties of materials exert significant effects on anisotropic wetting on machined surface. Generally, it increases with the mean slop of roughness profile Kr, and decreases with intrinsic contact angle. Anisotropic wetting on hydrophilic materials is distinctly stronger than that on hydrophobic materials. These efforts on researching the effects on anisotropy wetting on machined surfaces have shown practical significance in oil recovery, lubrication and sealing.

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“…works that have been done on the study of contact angle hysteresis such as [53][54][55][56][57][58].…”

Section: Contact Angle Hysteresismentioning

confidence: 99%

Progress in Wettability Study of Reactive Systems

Komolafe

Medraj

2014

Journal of Metallurgy

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A review of various factors affecting wetting and spreading has been presented. Various methods for wettability studies and critical issues concerning contact angle measurement are discussed. Reactive wetting has been given a special attention in the paper and recent developments in this area are summarized and discussed. Although advanced understanding of nonreactive wetting is currently available in the literature, complete understanding of reactive wetting is still lacking due to the complexity of the phenomenon. To date, there is no single model that is generally applicable to all reactive wetting systems. Reaction between the liquid drop and substrate can take the form of dissolution, intermetallic formation, or combination of both processes. Factors affecting wettability have been summarized and discussed as well as the major available techniques to investigate wetting behaviour.

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Thermodynamic modeling of contact angles on rough, heterogeneous surfaces

Cited by 118 publications

References 36 publications

Analysis of approaches to mathematical description of the characteristics of materials with high hydrophobicity

Analysis of approaches to mathematical description of the characteristics of materials with high hydrophobicity

Effects of Chemical Properties and Roughness on Anisotropic Wetting Observed on Machined Surfaces

Progress in Wettability Study of Reactive Systems

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