接触角迟滞-优点和缺点:一个批判性的评论

IF 3.5 Q2 Materials Science
A. T. Tyowua, Stephen Gbaoron Yiase
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引用次数: 3

摘要

接触角滞后的存在——前进和后退接触角值之间的差异——在自然界中是显而易见的(例如雨滴粘附在汽车挡风玻璃和窗格玻璃上)和许多工业过程中(例如织物的表面涂层、喷涂和染色)。这种现象通常被视为一种麻烦,但它在许多工艺中都是有利的,包括浸渍和旋涂、喷涂和喷漆。在Thomas Young、Robert Wenzel、A.B.D.Cassie和S.Baxter早期描述固体表面润湿性的理论框架下,通过扩展接触角,深入研究了接触角滞后现象。我们在这里回顾了测量接触角的各种方法,从而测量接触角滞后以及相关的理论模型。强调了这些模式的成功之处和局限性。最后,我们总结了接触角滞后的优点和缺点,在许多过程中,接触角滞后通常被认为是一种麻烦,尤其是当含有非挥发性成分的挥发性液滴蒸发形成“咖啡污渍”时。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Contact Angle Hysteresis – Advantages and Disadvantages: A Critical Review
The existence of contact angle hysteresis – the difference between the values of the advancing and receding contact angles – is evident in nature (e.g. sticking of rain drops to car windscreens and window panes) and many industrial processes (e.g. surface coating, spraying, and dyeing of fabrics). This phenomenon is often viewed as a nuisance, but it is advantageous in many processes including dip and spin coating, spraying, and painting. With the early theoretical framework of Thomas Young, Robert Wenzel, and A. B. D. Cassie and S. Baxter, describing the wettability of solid surfaces and by extension contact angle, contact angle hysteresis has been deeply investigated. We review here the various ways of measuring contact angle and, consequently, contact angle hysteresis as well as related theoretical models. The successes and limitations of these models are highlighted. We conclude with the advantages and disadvantages of contact angle hysteresis whose presence in many processes is often considered as a nuisance, especially when "coffee stain" forms from the evaporation of a volatile liquid drop containing nonvolatile components.
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来源期刊
Reviews of Adhesion and Adhesives
Reviews of Adhesion and Adhesives MATERIALS SCIENCE, MULTIDISCIPLINARY-
自引率
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期刊介绍: With the explosion of research activity and reports, the need for concise and critical reviews of topics of contemporary research interest is manifest. Reviews of Adhesion and Adhesives (RAA) provides in-depth, incisive, illuminating and thought-provoking reviews written by subject matter experts covering all aspects of adhesion science and adhesive technology. Each review will be imbued with the author’s experience so that the reader will be able to assimilate the research in the area discussed easily and will be able to apply it in practice.The journal has relevance to a myriad of industries including textiles, printing, coatings, aerospace, medical, nanotechnology, biotechnology, building and construction, and microelectronics. The topics to be covered include, but not limited to, basic and theoretical aspects of adhesion; modeling of adhesion phenomena; mecha¬nisms of adhesion; surface and interfacial analysis and characterization; unraveling of events at interfaces; characterization of interphases; adhesion of thin films and coatings; adhesion aspects in reinforced composites; formation, characterization and durability of adhesive joints; surface preparation methods; polymer surface modification; biological adhesion; particle adhesion; adhesion of metallized plastics; adhesion of diamond-like films; adhesion pro¬moters; contact angle, wettability· and adhesion; superhydrophobicity and superhydrophilicity. With regard to adhesives, RAA will include, but not limited to, green adhesives; novel and high-performance adhesives; and medical adhesive applications.
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