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本文采用酶促合成及水相沉淀聚合法制备了半乳糖酯的均聚物(Poly-OVSEGA),将合成的含糖聚合物与聚丙烯腈(PAN)复合,应用静电纺丝手段制备成纳米纤维膜。通过IR,NMR等手段对聚合物的结构进行表征,应用SEM研究了含糖纳米纤维膜形貌。在此基础上对于BSA的定量吸附进行了系统的考察。实验结果表明:随着半乳糖酯均聚物的含量在复合纤维膜中的增加,纳米纤维膜的直径分布比较均匀,平均直径分布在200~300nm之间。随着含糖均聚物含量的提高,聚合物膜的牛血清白蛋白(BSA)吸附值降低后保持稳定,证明膜材料的抗蛋白质污染能力提高了。
Poly-OVSEGA was prepared by enzymatic synthesis and aqueous phase precipitation polymerization. The synthesized sugar-containing polymer was compounded with polyacrylonitrile (PAN) and electrospinning was used to prepare nanometer Fiber membrane. The structure of the polymer was characterized by means of IR and NMR. The morphology of the nanofibrous membrane containing sugars was studied by SEM. On this basis, the quantitative adsorption of BSA was systematically investigated. The experimental results show that with the increase of the content of galactose homopolymer in the composite fiber membrane, the diameter distribution of the nanofiber membrane is more uniform with the average diameter of 200 ~ 300nm. With the increase of the content of the sugar homopolymer, the BSA adsorption value of the polymer membrane decreased and then remained stable, demonstrating that the anti-protein contamination ability of the membrane material was improved.