Surface Modification and Anti-Fouling of Polypropylene Porous Membrane

Surface modification of polypropylene microporous membrane was performed by grafting polymerization of acrylamide.The morphological and microstructure changes of the membrane surface were confirmed by ATR-FT-IR,XPS,SEM and AFM.The contact angle,uptake water ability,protein adsorbed amount,water flux and antifouling property were studied as well.The results indicate that the contact angle on the grafted membrane decreases from 95° to 38° and the uptake water ratio is up to 163.9% with the increase of grafting degree.The amount of protein adsorbed on the modified membrane is smaller than the unmodified membrane,The fouling ratio of the membrane falls down though the water flux reduces,the fouling ratio of the grafted membrane with the grafting degree 11.5% is 0.274.The hydrophilic and antifouling property of the grafted membrane are improved.