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http://dx.doi.org/10.17702/jai.2014.15.2.057

Precise Static Contact Angle Measurements Using Pythagolas Rule  

Choi, Jin-Yeong (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Kwon, Dong-Jun (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Wang, Zuo-Jia (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Shin, Pyeong-Su (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Park, Joung-Man (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
Publication Information
Journal of Adhesion and Interface / v.15, no.2, 2014 , pp. 57-62 More about this Journal
Abstract
Pythagolas rule was used for investigation of static contact angle in particular figures. Static contact angle measurement was important to evaluate the wettability between solid and liquid. Optimum measurement method and standardization of calculation for static contact angle were investigated for practical application. Optimum diameter of droplet for static contact angle measurement was confirmed as 1 mm. Contact angle measurement using Pythagolas rule was also used to calculate advancing, receding angle and wettability of different surface condition. At last, it was concluded that the Pythagolas rule method was more accurate than general lineation method for static contact angle measurement.
Keywords
static contact angle; wettability; hydrophilic; hydrophobic; Pythagolas principle;
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