CAJ | 학술논문

采用巯基乙酸对聚乙二醇（PEG）端基进行修饰，然后将再生纤维素膜乙烯基化，在UV照射的条件下，将巯基化PEG接枝到乙烯化后的再生纤维素膜表面，并用核磁共振对PEG和巯基化的PEG进行表征；分别用ATR-FTIR和XPS观察原膜、乙烯化膜、光引发后膜表面的结构组成；考察原膜与改性膜的纯水通量、孔径分布变化；并通过对牛血清磷酸缓冲溶液（BSA/PBS）的动态抗污染实验考察改性膜的耐污染能力。结果表明：成功合成出了巯基化PEG，ATR-FTIR及XPS证明了PEG链成功接枝在膜的表面；改性后膜的抗污染能力较原膜有所增强。
채용구기을산대취을이순（PEG）단기진행수식，연후장재생섬유소막을희기화，재UV조사적조건하，장구기화PEG접지도을희화후적재생섬유소막표면，병용핵자공진대PEG화구기화적PEG진행표정；분별용ATR-FTIR화XPS관찰원막、을희화막、광인발후막표면적결구조성；고찰원막여개성막적순수통량、공경분포변화；병통과대우혈청린산완충용액（BSA/PBS）적동태항오염실험고찰개성막적내오염능력。결과표명：성공합성출료구기화PEG，ATR-FTIR급XPS증명료PEG련성공접지재막적표면；개성후막적항오염능력교원막유소증강。
After the PEG end group modificated by mercaptoacetic acid, the cellulose membrane regenerated by the vinyl, and then the thiol PEG is grafted to the regenerated cellulose membrane in UV irradiation conditions. The PEG and PEG thiol are characterized by NMR, and the surface structures of original membrane, vinyl membrane, light triggered membrane are observed by ATR-FTIR and XPS, respectively. The changes of pure water flux and pore size distribution of the original membrane and the modified membrane are also inspected, and the fouling resistance of modified membrane is observed by the dynamic anti-pollution experiment for bovine serum phosphate buffer solution (BSA / PBS). The experimental results show that the thiol of PEG is synthesized successfully, and ATR-FTIR and XPS prove that PEG chains are grafted onto the membrane surface successfully. Compared to the original film the anti-pollution capability of modified membrane has been enhanced.