Fabrication of Multiwalled Carbon Nanotube/Polypropylene Conductive Fibrous Membranes by Melt Electrospinning
Fabrication of Multiwalled Carbon Nanotube/Polypropylene Conductive Fibrous Membranes by Melt Electrospinning
复制标题
DOI：
10.1021/ie403746p
复制
发表时间：
2014-02-12
影响因子：
4.2
通讯作者：
Chen, Xiaonong
中科院分区：
文献类型：
--
作者：
Cao, Li;Su, Dunfan;Chen, Xiaonong
采用熔融静电纺丝法制备了纤维直径为1-3 μ m的多壁碳纳米管/聚丙烯（CNT/PP）导电纤维膜。为了改善碳纳米管的分散性，提高聚丙烯纤维的可纺性，将碳纳米管与少量的石蜡液体（PL）混合，然后与聚丙烯熔融共混进行熔融静电纺丝。通过扫描电镜和透射电镜观察了纤维膜的形貌和碳纳米管在聚丙烯纤维中的取向。采用差示扫描量热法（DSC）和X射线衍射法（XRD）研究了PL和CNTs对PP结晶行为的影响。通过拉伸试验和阻抗分析研究了纤维膜的力学性能和电学性能。结果表明，CNT对PP有明显的成核作用，PL的加入可显著改善CNT/PP共混物的可纺性。这种新型的导电纤维膜通过熔融静电纺丝制备，具有改善的拉伸强度和模量，良好的导电性，以及增强的介电常数和疏水性。
A novel multiwalled carbon nanotube/polypropylene (CNT/PP) conductive fibrous membrane with fiber diameter of 1-3 mu m was fabricated by melt electrospinning. To improve the dispersibility of CNT and enhance the spinnability of PP fibers, CNTs were first mixed with small amounts of paraffin liquid (PL) and then melt-blended with PP for melt electrospinning. The morphology of fibrous membranes and the orientation of CNTs in PP fibers were observed via scanning and transmission electron microscopy (SEM and TEM). The effect of PL and CNTs on crystallization behavior of PP was studied by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). Tensile test and impedance analysis were performed to investigate the mechanical and electrical properties of the fibrous membranes. The results indicated that CNT has a distinct nucleating effect on PP, and the addition of PL can improve the spinnability of the CNT/PP compound remarkably. This novel conductive fibrous membrane fabricated by melt electrospinning exhibits improved tensile strength and modulus, good electric conductivity, and enhanced dielectric constant and hydrophobicity.