Colloid and Polymer Science

, Volume 263, Issue 12, pp 1041–1043 | Cite as

Equilibrium contact angles as a function of the concentration of nonionic surfactants on quartz plate

  • W. Li
  • T. Gu
Short Communication


The contact angles of aqueous solution of Triton X-100 and Triton X-305 for airwater-quartz and cyclohexane-water quartz systems have been studied. It has been found that the equilibrium contact angle (measured through water) against quartz is increased by the addition of small amounts of nonionic surfactants, but beyond a certain concentration the angle decreases again. Based on the bilayer adsorption model on quartz/water interface, the experimental results can be explained.

Key words

Contact angle nonionic surfactants bilayer adsorption molecular orientation 


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Copyright information

© Steinkopff 1985

Authors and Affiliations

  • W. Li
    • 1
  • T. Gu
    • 1
  1. 1.Laboratory of Surface and Colloid Chemistry, Department of ChemistryPeking UniversityBeijmgChina

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