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采用溶液聚合法制备丙烯酸甲酯-丙烯酸的共聚物。用水及丙酮分别萃取纯化,以N,N-二甲基甲酰胺(DMF)为溶剂,配成质量分数为22%、26%、30%溶液,通过静电纺丝技术制备P(MA-AA)纳米纤维膜。借助扫描电镜(SEM)观察纳米纤维的表面形态,利用红外光谱对纳米纤维膜进行表征,并研究了P(MA-AA)纳米纤维膜对pb2+吸附性能。结果表明,当P(MA-AA)质量分数在30%时,可纺性较好,其平均直径分布在200~400nm之间;纳米纤维膜吸附pb2+是化学吸附过程,其平衡吸附量为269.35mg/g,而且有着良好的吸附再生性能。
Preparation of methyl acrylate - acrylic acid copolymer by solution polymerization. (MA-AA) was prepared by electrospinning using N, N-dimethylformamide (DMF) as solvent to prepare 22%, 26% and 30% Nanofiber membrane. The surface morphology of nanofibers was observed by scanning electron microscopy (SEM), and the nanofiber membranes were characterized by infrared spectroscopy. The adsorption of pb2 + by P (MA-AA) nanofibers was also studied. The results showed that when the mass fraction of P (MA-AA) was 30%, the spinnability was better and the average diameter was distributed between 200 and 400 nm. The adsorption of Pb2 + on the nanofiber membrane was a chemisorption process with the equilibrium adsorption capacity of 269.35 mg / g, but also has a good adsorption regeneration performance.