contact line

air water

interfacial tension

contact angle

water interface

interfacial energy

surface free

polyvinyl alcohol

updated reflect usage

polymer solutions

Journal of Applied Polymer Science

A method for measuring the surface energy of solids and for resolving the surface energy into contributions from dispersion and dipole‐hydrogen bonding forces has been developed. It is based on the measurement of contact angles with water and methylene iodide. Good agreement has been obtained with the more laborious γ c method. Evidence for a finite value of liquid‐solid interfacial tension at zero contact angle is presented. The method is especially applicable to the surface characterization of polymers.

Estimation of the surface free energy of polymers