He Su-Wen, Liu Li-Qi, Gaol Bao-Shan, Chen Lei, Hu Zu-Ming, Yu Jun-Rong, Zhu Jing
College of Material Science and Engineering, Donghua University, Songjiang, Shanghai 201620, China.
J Nanosci Nanotechnol. 2011 May;11(5):4004-10. doi: 10.1166/jnn.2011.3827.
Electrospinning technique is the main method of preparing polymer nanofiber simply, directly and continuously at present. In this work, electrospinning blend solution was prepared by in-situ polymerization using acid-modified multi-walled carbon nanotubes (MWNTs), m-phenylenediamine (MPD) and isophthaloyl chloride (IPC). And then composite nanofibers were prepared by electrospinning. MWNTs played an important role in nanofiber's properties. The effects of MWNTs on the morphology and characterization of the MWNTs/PMIA composite nanofibers were investigated. Scanning electron microscopy (SEM), thermal gravimetric analyzer (TGA), and X-ray diffraction (XRD) were utilized to characterize the MWNTs/PMIA nanofibers morphology and properties. The experimental results indicated that the nanofibers diameter decreased and solution dynamic viscosity increased with increasing MWNTs contents. XRD data demonstrated that PMIA composite nanofibers had the same crystal type as the pure PMIA nanofiber, and crystallinity was improved with increasing MWNTs loading. Transmission electron microscopy (TEM) was used to confirm MWNTs aligned along the axis of composite nanofibers.
静电纺丝技术是目前简单、直接且连续地制备聚合物纳米纤维的主要方法。在本工作中，采用酸改性多壁碳纳米管（MWNTs）、间苯二胺（MPD）和间苯二甲酰氯（IPC）通过原位聚合制备静电纺丝共混溶液。然后通过静电纺丝制备复合纳米纤维。MWNTs在纳米纤维性能方面发挥了重要作用。研究了MWNTs对MWNTs/聚间苯二甲酰间苯二胺（PMIA）复合纳米纤维形态和表征的影响。利用扫描电子显微镜（SEM）、热重分析仪（TGA）和X射线衍射（XRD）对MWNTs/PMIA纳米纤维的形态和性能进行表征。实验结果表明，随着MWNTs含量的增加，纳米纤维直径减小，溶液动态粘度增大。XRD数据表明，PMIA复合纳米纤维与纯PMIA纳米纤维具有相同的晶型，且随着MWNTs负载量的增加结晶度提高。使用透射电子显微镜（TEM）确认MWNTs沿复合纳米纤维轴排列。
