磁场纺丝制备电磁功能化PANI/PVDF/γ-Fe_2O_3纳米纤维
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摘要
导电聚合物纳米纤维优异的纳米性质及电学性质使其在太阳能电池、传感器以及超级电容器等领域有广阔的应用前景[1,2]。除静电纺丝外,其他方法制备的纳米纤维长度经常小于10μm,且多为杂乱无章分布,这在某一程度上限制了其应用。为此,我们首次设计了一种新型的磁场纺丝法来制备平行的超细PANI/PVDF/γ-Fe_2O_3微纳米纤维。所得纤维是连续的,且有序度非常高,并且即使被转移到衬底上有序度不会被破坏掉。由于条件需求,我们把平行纳米纤维做成绞线,制备成应力传感器,其拉伸率可达440%,并且对压力有非常高的敏感性和良好的恢复性。这个电磁功能化的纳米纤维有希望被应用在大尺度的拉伸器件,传感器,电磁屏蔽材料等。
A novel magnetic-mechanical field spinning method has been used to fabricate ultrafine parallel polyaniline/polyvinylidene fluoride/γ-Fe_2O_3(PANI/PVDF/γ-Fe_2O_3) fibers.The resultant fiber is continuous and the length of the fiber can be tens of meters.Additionally,the fibers are well aligned and the alignment can be maintained thanking to the spinning method.Particularly,strain sensor based on the twisted fibers shows a ultrahigh stretchability up to 440%,quick and repeatable response to finger pressure.The electromagnetic functionalized composite fibers may be used in large scale stretchable devices,sensors,electromagnetic interference shielding,or magnetic mediated hyperthermia.
引文
[1]Yu,G.F.;Yan,X.;Yu,M.;et al.Nanoscale 2016,8(5):2944-2950.
    [2]Sundaramurthy,J.;Li,N.;Kumar,P.S.;et al.Biofuel Research Journal,2014,1(2):44-54.

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