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The influence of environment on the drop size — contact angle relationship

Colloid and Polymer Science volume 263, pages 673–681 (1985)Cite this article

Abstract

Advancing contact angles are reported for the water-PTFE, water-copper, water-stainless steel, water-PMMA andn-decane-PTFE systems for a range of liquid drop sizes.

The angles were determined at 25 °C in an air or nitrogen-saturated atmosphere and compared with those measured at the boiling point in an environment only of its vapor.

For water-PTFE and water-PMMA systems, a decrease in contact angle with decreasing drop size was observed in an air-saturated environment at 25 ° confirming the data of Good and Koo. An increase in contact angle however occurred with decreasing drop size at the boiling point in the pure vapor atmosphere confirming the results of Boyes and Ponter. The introduction of nitrogen decreased the contact angle although the trend remained the same.

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Author notes

  1. A. B. Ponter

    Present address: Office of the Dean of Engineering, Cleveland State University, Ohio, USA

Authors and Affiliations

  1. Department of Chemistry and Chemical Engineering, Michigan Technological University, Houghton, Michigan, USA

    M. Yekta-Fard

Authors
  1. A. B. Ponter
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  2. M. Yekta-Fard
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Ponter, A.B., Yekta-Fard, M. The influence of environment on the drop size — contact angle relationship. Colloid & Polymer Sci 263, 673–681 (1985). https://doi.org/10.1007/BF01419892

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  • DOI: https://doi.org/10.1007/BF01419892

Key words

  • Contact angle
  • drop size
  • vapor environment

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