Hydrophilic monomers were polymerized for lamination on polyvinylidene fluoride (PVDF) membrane surfacefor hydrophilization of the membranes. Hydrophilization reduced the contact angle from 95° to 55° and enhanced the waterflux by 10 times while it reduced the bovine serum albumin (BSA) adsorption amount to 1/4 level. Thermal polymerizationprocess was optimized by examining several operation parameters. Dimethyl oxobuthyl acrylamide (DOAA) showed the besteffect due to its better hydrophilicity than others. Increase of amount of monomer enhanced the performance until the optimumconcentration of 30 wt%, beyond which excess amount of monomer resulted in homopolymerization to deteriorate theperformance. Azobis (isobutyronitrile)(AIBN) initiator has greater activation temperature range than benzoyl peroxide (BPO)and it showed better hydrophilation performance. Two stage lamination process, application of initiator followed by monomeraddition, was more effective than one stage process, addition of initiator and monomer at once, which still reduced thecontact angle but also reduced the water flux by pore blocking phenomena.