CONTACT ANGLE MEASUREMENT BY POLYNOMIAL METHOD IN DROP SHAPE ANALYSIS

Authors

  • І. С. Кісіль Івано-Франківський національний технічний університет нафти і газу, вул. Карпатська, 15, (0342) 72-71-68
  • О. Б. Барна Івано-Франківський національний технічний університет нафти і газу, вул. Карпатська, 15, (0342) 72-71-68

Keywords:

contact angle, sessile drop method, drop shape analysis, relative deviation.

Abstract

There are analyzed the known methods of contact angle measuring by sessile drop shape analysis. The advantages and weaknesses of this methods and recommendations for their use are shown. The method of various degrees polynomial fitting curve of drop contour in the three-phase contact point is proposed for contact angle measuring. There is offered using of polynomial of 3rd – 6th orders on the basis of theoretical and experimental studies, investigating experimental contour with constant slope of tangent. There are calculated the relative deviation of actual values of contact angles determined by polynomials.

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References

1. Neumann A.W. Applied surface thermodynamics. – 2nd ed. / A.W. Neumann, Robert David, Yi Zuo. – N.Y.: CRC Press Taylor & Francis Group, 2011. – 768 p.
2. Möbius D. Drops and Bubbles in lnterfacial Research / D. Möbius, D. Miller - Studies in Interface Science, 1998. – 715 p.
3. Contact angle measurement in practice: [Електронний ресурс] // Kruss. Technical Note. - Режим доступу: https://cmi.epfl.ch/metrology /files/Kruss-DSA30/kruss-tn311-315-en.pdf.
4. Comparison of Wilhelmy and Sessile Drop Technique: [Електронний ресурс] // Kruss. Technical Note. - Режим доступу: http://www.kruss.de/fileadmin/user_upload/website/literature/kruss-tn303-en.pdf.
5. Русанов А. И. Межфазная тензиометрия / А. И. Русанов, В. А.Прохоров. – СПб: Химия, 1994. – 400 с.

Published

2015-12-11

How to Cite

Кісіль, І. С., & Барна, О. Б. (2015). CONTACT ANGLE MEASUREMENT BY POLYNOMIAL METHOD IN DROP SHAPE ANALYSIS. METHODS AND DEVICES OF QUALITY CONTROL, (2(35), 38–41. Retrieved from https://mpky.nung.edu.ua/index.php/mpky/article/view/271

Issue

Section

MEASUREMENT OF PHYSICAL AND MECHANICS PARAMETERS OF SUBSTANCES

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