1998年6月
A new method for measuring contact angle and liquid surface tension applying detachment of two-dimensional meniscus
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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- 巻
- 202
- 号
- 1
- 開始ページ
- 54
- 終了ページ
- 62
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1006/jcis.1998.5423
- 出版者・発行元
- ACADEMIC PRESS INC
A method is proposed for measuring either the solid-liquid contact angle or the liquid surface tension. The method applies the geometrical instability of a liquid meniscus, When a circular cylinder as a test solid is horizontally immersed into a liquid bath and lifted up gradually, a pair of two-dimensional meniscuses is formed under the side wall. At a certain critical height of the cylinder, the narrowest parts of the two meniscus curves contact each other, and the meniscus breaks down. Since the relation between the critical height H-Ber and the contact angle theta can be calculated theoretically, theta can be obtained by a simple measurement of H-Ber. It is possible to apply the same method for a plate used as a test solid. The liquid surface tension also can be measured by using a glass cylinder or plate to which most liquids attach at a = 0. The validity and usefulness of the method was experimentally confirmed for various solid and liquid samples. (C) 1998 Academic Press.
- リンク情報
- ID情報
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- DOI : 10.1006/jcis.1998.5423
- ISSN : 0021-9797
- CiNii Articles ID : 80010339734
- Web of Science ID : WOS:000073769800006