β-环糊精功能化聚丙烯腈纳米纤维的制备及对亚甲基蓝的吸附性能  

Preparation of β-Cyclodextrin Functionalized Polyacrylonitrile Nanofibers and Its Adsorption for Methylene Blue

作　　者：张旺[1] 陈铭[1] 刁国旺[1] 

机构地区：[1]扬州大学化学化工学院,扬州225002

出　　处：《高等学校化学学报》2011年第9期2227-2230,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20773107;20973151;20901065)资助

摘　　要：以N,N-二甲基甲酰胺(DMF)为溶剂,利用静电纺丝法制备了聚丙烯腈(PAN)/β-环糊精(β-CD)纳米纤维.通过场发射扫描电镜、红外光谱和粉末XRD对纳米纤维进行了表征,并检测了纺丝溶液的电导率和黏度.结果表明,β-CD的添加量可以改善纳米纤维的形貌,固定在纤维上的β-CD保留了空腔结构,为其在纳米纤维中发挥超分子特性提供了可能.通过紫外-可见光谱法研究了PAN/β-CD纤维对亚甲基蓝(MB)溶液的吸附性能.结果表明,纳米纤维中的β-CD显著提高了PAN/β-CD纤维对MB的吸附能力,使其在吸附分离、电化学传感器及药物控制释放等领域具有潜在的应用价值.A novel polyacrylonitrile/β-cyclodextrin（PAN/β-CD） nanofibrous membrane（PAN/β-CDnfm） for molecular adsorption was successfully prepared by electrospinning from a homogeneous solution of β-CD and PAN in dimethylformamide（DMF）.PAN/β-CDnfm with the different mass fraction of β-CD（0,10%,30%,60%） was characterized by scanning electronic microscopy（SEM）,Fourier transform infrared spectroscopy（FTIR） and X-ray powder diffraction（XRD）.The SEM results show that the increasing concentration of β-CD in the fibrous membrane improves the fibrous morphology.The viscosity and conductivity of electrospinning solutions are influenced by the addition of β-CD.The studies of FTIR and XRD prove that β-CD molecules are combined with the PAN nanofibers.In the adsorption study,methylene blue（MB） was used as a model molecule.By UV-Vis spectra,PAN/β-CDnfm showed the efficient adsorption ability for MB via the formation of inclusion complexes with β-CD,which indicates that the β-CD functionalized nanofibers may be utilized in purification/separation processes,electrochemical sensor,drug delivery,and so on.

关 键 词：静电纺丝 聚丙烯腈 Β-环糊精 吸附 

分 类 号：O631[理学—高分子化学]