Abstract: | Abstract The contact angles θ of polar liquid on surface of non-crosslinking linear low density polyethylene-graft-acrylic acid (LLDPE-g-AA) were measured. The critical surface tension (γc) of LLDPE-g-AA films were evaluated by three different plots, the Zisman plot, the Young-Dupre-Good-Girifalco plot, and the log(1 + cos θ) versus log θ L , plot. The θ c of LLDPE-g-AA obtained by the 1 + cosθ versus θ L ?1/2 plot were higher than those obtained by other plots. |