Model of Advancing and Receding Contact Angles on Rough Surfaces

doi:10.1021/acs.jpcc.9b03288

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Model of Advancing and Receding Contact Angles on Rough Surfaces
	Lei D; Li Y; Lin M(林缅); Wen MG
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2019-08-01
卷号	123 期号:30 页码:18376-18386
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.9b03288
通讯作者	Li, Yun(yunli@mail.xjtu.edu.cn) ; Lin, Mian(linmian@imech.ac.cn)
英文摘要	Contact angle hysteresis is a basic phenomenon in many industrial applications, such as material surface engineering and enhanced oil recovery. The mechanism of continuous change of the contact angle during hysteresis is not well understood and described, and it is also important to predict advancing and receding angles by the Young contact angle and surface roughness. In this work, a contact angle hysteresis model is developed based on several metastable contact angle models. The fraction difference between gas and liquid prefilling the solid grooves is assumed to be variable, so is the fraction difference of gas and liquid displaced by the other phase. Besides these two newly introduced variables, the solid area fraction, the ratio of the real surface area to the projected surface area, and the Young, contact angle together influence the advancing and receding angles. Energy input or work is the external cause of hysteresis. The new variables are the intrinsic cause of hysteresis, enabling the continuous change of the contact angle and ensuring a minimal surface energy during hysteresis. The advancing and receding angles are explicitly expressed in a function of the factors mentioned above. The results from this model are in good coincidence with experiments from the literature. Through comparison, it is found that the model in this paper can be reduced as the Wenzel model, Cassie-Baxter model, etc., under special conditions.
分类号	二类/Q1
资助项目	National Natural Science Foundation of China[41574129] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010304] ; Major National Science and Technology Special Program of China[2017ZX05037-001]
WOS关键词	WETTING HYSTERESIS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
WOS记录号	WOS:000479326300028
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Major National Science and Technology Special Program of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79751]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
推荐引用方式 GB/T 7714	Lei D,Li Y,Lin M,et al. Model of Advancing and Receding Contact Angles on Rough Surfaces[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(30):18376-18386.
APA	Lei D,Li Y,林缅,&Wen MG.(2019).Model of Advancing and Receding Contact Angles on Rough Surfaces.JOURNAL OF PHYSICAL CHEMISTRY C,123(30),18376-18386.
MLA	Lei D,et al."Model of Advancing and Receding Contact Angles on Rough Surfaces".JOURNAL OF PHYSICAL CHEMISTRY C 123.30(2019):18376-18386.