Amphiphilic graft copolymer polystyrene-graft-nonylphenoxy-poly(ethylene oxide) (PS-g-NPEO 40) has been synthesized by the radical solution copolymerization of macromonomer NPEO-MA with styrene．By the method of coating-evaporating

amphiphilic graft copolymer films were prepared with THF or toluene as solvents on PET matrix．By means of SEM

XPS

ATR and contact angle measurements

effects on the surface morphology

the surface composition and the surface wetting were investigated．The results showed the formation of regular micropores in amphiphilic graft copolymer films under different conditions. With the increasing of NPEO content

the size of micropores increased and the wetting of polymeric film became better．With the increasing of the solution concentration

the diameter of micropores increased

which makes the wetting of polymeric film better. While in toluene

the influence of the solution concentration on surface morphology was weak

but the relationship of contact angle and concentration was opposite to that in THF

i．e．

with the increasing of concentration

the wetting of amphiphilic graft copolymer film became worse. In the same solution concentration

the diameter of micropores of polymeric film in THF was bigger than that in toluene and the hydrophilic composition in THF was less than that in toluene.