論文

査読有り 国際共著 国際誌
2018年3月27日

Hydrophobic Attraction Measured between Asymmetric Hydrophobic Surfaces

Langmuir
  • Naoyuki Ishida
  • ,
  • Kohei Matsuo
  • ,
  • Koreyoshi Imamura
  • ,
  • Vincent S. J. Craig

34
12
開始ページ
3588
終了ページ
3596
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1021/acs.langmuir.7b04246
出版者・発行元
American Chemical Society

The interaction forces between silica surfaces modified to different degrees of hydrophobicity were measured using colloidal probe atomic force microscopy (AFM). A highly hydrophobic silica particle was prepared with octadecyltrichlorosilane (OTS), and the interaction forces were measured against silica substrates modified to produce surfaces of varying hydrophobicity. The interaction forces between the highly hydrophobic particle and a completely hydrophilic silicon wafer surface fitted well to the DLVO theory, indicating that no additional (non-DLVO) forces act between the surfaces. When the silicon wafer surface was treated to produce a contact angle of water on surface of 40°, an additional attractive force that is longer ranged than the van der Waals force was observed between the surfaces. The range and magnitude of the attractive force increase with the contact angle of water on the substrate. Beyond the effect on the contact angle, the hydrocarbon chain length and the terminal groups of hydrophobic layer on the substrate only have a minor effect on the magnitude of the force, even when the substrate is terminated with polar carboxyl groups, provided the hydrophobicity of the other surface is high.

リンク情報
DOI
https://doi.org/10.1021/acs.langmuir.7b04246
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000428712400006&DestApp=WOS_CPL
URL
http://orcid.org/0000-0001-7603-1151
ID情報
  • DOI : 10.1021/acs.langmuir.7b04246
  • ISSN : 1520-5827
  • ISSN : 0743-7463
  • ORCIDのPut Code : 42550478
  • SCOPUS ID : 85044628669
  • Web of Science ID : WOS:000428712400006

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