Poly (ether ether ketone) (PEEK) ultrafiltration membrane was modified with 2-hydroxylethyl acrylate (HEA) as a hydrophilic monomer through light-initiated grafting polymerization to improve its permeability and antifouling property. The effects of monomer concentration and irradiation time on the surface’s chemical structure and morphology, degree of grafting (DG), surface hydrophilicity and pore volume of the membranes were systematically investigated; meanwhile, the antifouling property were characterized and analyzed using bovine serum albumin (BSA) as a model foulant. The results indicate that the DG and hydrophilicity of the membrane surface are enhanced with the increase of either monomer concentration or irradiation time. The water flux of modified membrane using 0.3 mol/L HEA and 20 min irradiation time is 1.52 times that of unmodified membrane, and the irreversible fouling decreases from 51 % to 10.9 %. In this work, the graft chain length and graft density are considered to be controlled by the factors of monomer concentration and irradiation time, respectively. Compared with increasing the graft density, the increase of the graft chain length is more easily to lead to a decrease in membrane permeability. Meanwhile, the long chain length is more important than the high graft density to achieve excellent antifouling performance.

聚（醚醚酮）（PEEK）超滤膜通过光引发的接枝聚合反应，以丙烯酸2-羟乙基乙酯（HEA）为亲水单体进行改性，以提高其渗透性和防污性能。系统研究了单体浓度和辐照时间对表面化学结构和形貌，接枝度（DG），表面亲水性和膜孔体积的影响。同时，以牛血清白蛋白（BSA）为模型污垢剂对防污性能进行了表征和分析。结果表明，随着单体浓度或辐照时间的增加，膜表面的DG和亲水性增强。使用0.3 mol / L HEA和20分钟的照射时间的改性膜的水通量为1。未改性膜的52倍，不可逆结垢从51％降至10.9％。在这项工作中，接枝链的长度和接枝密度被认为分别受单体浓度和照射时间的因素控制。与增加接枝密度相比，接枝链长度的增加更容易导致膜渗透性的降低。同时，长链长比高接枝密度更重要，以实现出色的防污性能。接枝链长度的增加更容易导致膜渗透性的降低。同时，长链长比高接枝密度更重要，以实现出色的防污性能。接枝链长度的增加更容易导致膜渗透性的降低。同时，长链长比高接枝密度更重要，以实现出色的防污性能。