【摘要】 利用静电纺丝结合原位自聚合技术制备了聚偏氟乙烯(PVDF)/聚多巴胺(PDA)/环糊精(CD)功能化纤维膜，采用傅里叶变换红外光谱仪和扫描电子显微镜对纤维膜结构与形貌进行表征，考察了PVDF/PDA/CD纤维膜对不同pH值亚甲基蓝溶液的吸附性能。结果表明：功能化改性后，PDA与CD分子附着于PVDF纤维表面，增大了PVDF/PDA/CD纤维的直径和表面粗糙度，提升了PVDF/PDA/CD纤维膜的吸附能力；当亚甲基蓝溶液的pH值为1～10时，该功能化纤维膜在碱性环境下具有更高的吸附能力；随吸附时间延长，功能化纤维膜对亚甲基蓝的吸附量增加，吸附过程符合伪二阶动力学模型，说明PVDF/PDA/CD功能化纤维膜对亚甲基蓝的吸附过程主要受化学吸附作用控制。更多还原

【Abstract】 Polyvinylidene fluoride(PVDF)/polydopamine(PDA)/cyclodextrin(CD) functionalized fibrous membranes were prepared by electrospinning technique combined with in-situ self-polymerization.The structure and morphology of the membranes were characterized by Fourier transform infrared spectroscope and scanning electron microscope.The adsorption behaviors of the functionalized fibrous membranes for methylene blue at different pH values were investigated.The results show that PDA and following CD molecules attaching to the surface of PVDF fibers after functionalization increase the diameter and surface roughness of PVDF/PDA/CD fibers，and improve the adsorption capacity of the functionalized fibrous membrane.The functionalized fibrous membrane exhibits higher adsorption capacity in alkaline media when the pH value of methylene blue solution is in the range of 1 to 10.With the increase of adsorption time，the adsorption of methylene blue by PVDF/PDA/CD membrane goes up gradually.The adsorption process conforms to the pseudo-second-order kinetic model，which is controlled by chemisorption.更多还原