Critical Surface Tension of Non-crosslinking Linear Low Density Polyethylene-graft-acrylic Acid by the Contact Angle Method

摘要

The contact angles #theta# of polar liquid on surface of non-crosslinking linear low density polyethylene-graft-acrylic acid (LLDPE-g-AA) were measured.The critical surface tension (#gamma#c)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#theta#)versus log#gamma#L plot.The #gamma#c of LLDPE-g-AA obtained by the 1+cos#theta# #gamma#L~(-1/2) plot were higher than those obtained by other plots.