The effect of roughness on the values of contact angles of binary systems measured at atmospheric pressure and ambient temperature on poly(tetrafluoroethylene) surfaces

摘要

AbstractContact angles are reported for the systems ethanol–water,n‐propanol–water, and benzene–cyclohexane measured at atmospheric pressure and 25.0°C, in equilibrium with their vapors, on poly(tetrafluoroethylene) surfaces of known roughness. Comparison of the data with those reported by other workers has shown that the discordancy in values can be attributed solely to the various preparation techniques producing surfaces of differing rou