Polyacrylonitrile and Carbon Nanofibers with Controllable Nanoporous Structures by Electrospinning
Polyacrylonitrile and Carbon Nanofibers with Controllable Nanoporous Structures by Electrospinning
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DOI：
10.1002/mame.200900076
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发表时间：
2009-10-12
影响因子：
3.9
通讯作者：
Shao, Changlu
中科院分区：
文献类型：
--
作者：
Zhang, Zhenyi;Li, Xinghua;Shao, Changlu
本文采用静电纺丝技术成功制备了具有可控纳米孔结构的聚丙烯腈（PAN）和碳纳米纤维。以PAN和聚乙烯吡咯烷酮（PVP）两种聚合物为静电纺丝前驱体，采用水萃取法去除复合聚合物纳米纤维中的PVP，制备了多孔PAN纳米纤维。通过改变前驱体中PAN/PVP的比例，可以很容易地控制多孔PAN纳米纤维的孔径和孔分布。以多孔PAN纳米纤维为结构导向模板，通过热处理，得到了具有纳米孔结构的碳纳米纤维。采用扫描电子显微镜（SEM）、傅里叶变换红外光谱（FT-IR）、差热分析（DTA）、BET氮吸附、X射线衍射（XRD）和拉曼光谱对多孔纳米纤维进行了表征。
In this work, polyacrylonitrile (PAN) and carbon nanofibers with controllable nanoporous structures were successfully prepared via electrospinning technique. For the preparation of porous PAN nanofibers, two kinds of polymers of PAN and polyvinylpyrrolidone (PVP) were used as electrospun precursor materials, and then the bicomponent nanofibers of PAN and PVP were extracted with water to remove the PVP in the composite polymer nanofibers. By altering the ratio of PAN/PVP in the precursor, the pore size and pore distribution of porous PAN nanofibers could be easily controlled. By using the porous PAN nanofibers as structures directing template and through heat treatment, carbon nanofibers with nanoporous structures were obtained. The porous nanofibers were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), differential thermal analyses (DTA), Brunauer-Emmett-Teller (BET) nitrogen adsorption, X-ray diffraction (XRD), and Raman spectra.