CAJ | 학술논문

采用自由基聚合合成两亲性聚离子液体共聚物(P (MMA-co-BVIm-Br))，并将该共聚物与聚偏氟乙烯(PVDF)通过相转化法共混成膜。采用红外光谱仪(FT-IR)、接触角测量仪、Zeta 电位计以及扫描电镜等对共混膜表面的化学结构、荷电特性以及膜的表面形貌等进行了表征。研究了共混膜对蛋白质的分离性能，结果表明，当溶液pH 值低于蛋白质分子等电点时，共混膜的截留率、可逆污染率和通量恢复率均高于等电点时的数值，这说明该膜具有良好的荷正电性和抗污染特性。
채용자유기취합합성량친성취리자액체공취물(P (MMA-co-BVIm-Br))，병장해공취물여취편불을희(PVDF)통과상전화법공혼성막。채용홍외광보의(FT-IR)、접촉각측량의、Zeta 전위계이급소묘전경등대공혼막표면적화학결구、하전특성이급막적표면형모등진행료표정。연구료공혼막대단백질적분리성능，결과표명，당용액pH 치저우단백질분자등전점시，공혼막적절류솔、가역오염솔화통량회복솔균고우등전점시적수치，저설명해막구유량호적하정전성화항오염특성。
The amphiphilic poly(ionic liquid)copolymer P(MMA-co-BVIm-Br)was synthesized by radical poly-merization process.P (MMA-co-BVIm-Br)was used to prepare P (MMA-co-BVIm-Br)/PVDF blend mem-branes.Infrared spectroscopy (FT-IR),contact angle,zeta potential instrument and scanning electron micros-copy (SEM)were used to characterize the structure and properties of the blend membranes.The protein separa-tion properties of the blend membranes were also studied.The results indicated that the pH value of the solution could change the charged property of the protein,which affected the separation properties of the membranes. When the pH value of solution was below the isoelectric point of the protein,the rejection,reversible fouling rate and the flux recovery ratio of the blend membranes were all increased.These phenomena suggested that the blend membranes had good charged and anti-fouling properties.