The effects of graft yield, Na-content, and La-content on the surface characteristics of PET-g-AA/MA and of La(III) chelated PET-g-AA/MA such as surface free energy, nondispersion interaction force, work of adhesion, etc., were investigated. The frictional static electricity and electric conductivity were also measured. The results show that La(III) chelated PET-g-AA/MA have high degree of hydrophilicity and excellent antistatic property. The electric conductivity is also increased.