Physical Adsorption on Low Energy Solids. I. Adsorption of Carbon Tetrafluoride, Argon, and Nitrogen on Polytetrafluoroethylene

Relation of the Equilibrium Contact Angle to Liquid and Solid Constitution

“…In creasing interest has been shown in the behavior of surface-active agents at organic liquid-air interfaces. Many of the earliest such studies were made on compounds previously found effective as surfaceDownloaded by 34 [51] have also led to the conclusion that the vapor adsorption for the gaseous substances studied on this low-energy solid surface is but a small fraction of a monolayer. Hence, we have concluded [106] that f gyo is a small term in comparison with WA* for each liquid and solid whenever rLy0 is greater than yc .…”

The surface film pressure computations from the adsorption data of organic vapours on carbon black

“…For teflon, the total surface energy is estimated to be between 56 and 69 ergs/cm 2. For CC14, argon and nitrogen adsorption on polytetrafluoroethylene (12) film pressures at coverage representing one statistical monolayer yielded values of the order of 9.5 to 10 ergs/cm 2. For CC14, argon and nitrogen adsorption on polytetrafluoroethylene (12) film pressures at coverage representing one statistical monolayer yielded values of the order of 9.5 to 10 ergs/cm 2.…”

Fluorine-Containing Polymers as Solid Supports in Gas Chromatography.

“…The surface area of another sample of Teflon-6 has been reported as 11.7 m2/g. (8). The recommended procedure for packing columns with Teflon-6 type support is as follows.…”