I would like to find the surface tension of my polymer mix with different solvents. Is it possible to determine the surface tension by finding their contact angle on similar surface?
Dear Rahul Rimal
Yes, it is possible to calculate from the contact angle
Best regards
Yes, it is possible. See the references below for more details:
Myers D. Surfaces, Interfaces, and Colloids: Principles and Applications. 2001, 2nd Ed., Wiley-Interscience, New York.
Van Oss CJ, Good RJ, and Chaudhury MK. Additive and Non additive Surface Tension, Components and the Interpretation of Contact Angles. ACS, Langmuir. 1988; 4:884–891.
Owens DK, Wendt RC. Estimation of the surface free energy of polymers. J. Appl. Polym. Sci. 1969; 13:1741–1747.
Fowkes FM. Donor-Acceptor Interactions at Interfaces. J. Adhesion. 1972; 4:155–159.
Please note that CA measurements of surfaces are not trivial. To be honest it really makes absolutely no sence to add an additional phase even without static contact angle hysteresis, advancing, receding angle, pinning, finding and cleaning an adequate model surface... (if you like take a look at my publications and the suggested publications on my side)
I really strongly suggest using a pendent drop methode and ADSA.
If as your question indicates your OCA have not installed the subroutine. You should search in the WWW or in publications. Good and open access routines exist to do this job. If you want to make it by your own to not hesitate to use our own routine HPDSA to transfer the image in coordinates (but code is not designed for. Pendent drop)
Surface tension and contact angle of a droplet could be estimated together only if sessile drop experiments are conducted and the results are analyzed using Young-Laplace equation.
If you are interested, I have written a software that performs these calculations based on an advanced image analysis technique on the captured droplets.
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