Generally, contact angle of water drop + caontact angle of air bubble at water using captive bubble method =180°. But, for this cloth, this principle does not work again. As shown in video, contat angle of water drop is above 120° and air bubble at water is also above 120°. So, we suggest you to check out you sample with water drop and air bubble together when you want to use captive bubble method. visit http://www.uskino.com to find more information about our contact angle goniometer and surface tensiometer.
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