Fabrications and structural characterization of ultra-fine carbon fibres by electrospinning of polymer blends
Fabrications and structural characterization of ultra-fine carbon fibres by electrospinning of polymer blends
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DOI：
10.1016/j.ssc.2007.01.030
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发表时间：
2007-04-01
影响因子：
2.1
通讯作者：
Endo, M.
中科院分区：
文献类型：
--
作者：
Kim, C.;Cho, Y. J.;Endo, M.
在这里，我们展示了通过静电纺丝聚合丙烯腈（PAN）和聚酰胺酸（PAA）的聚合物混合物以及随后的热处理来制造超细碳纤维的能力。通过添加聚丙烯腈降低溶液粘度，获得了良好的可纺性。纺丝过程中形成的纤维直径与炭化纤维的物理性能密切相关；纤维直径越小，单根碳化纤维的结晶度越高，碳化纤维网的导电性和机械强度也越高。碳化纤维网的机械强度具有较高的各向异性，这是由于静电纺丝过程中纤维沿缠绕方向部分排列所致。(C) 2007 Elsevier Ltd.版权所有。
Here we demonstrated the ability to fabricate ultra-fine carbon fibres through electrospinning of the polymer blends of polyacrylonitrile (PAN) and polyamic acid (PAA) and subsequent thermal treatment. The good spinnability of the polymer blends was achieved by reducing the solution's viscosity by the addition of PAN. There was a close correlation between the fibre diameter developed in the spinning process and the physical properties of the carbonized fibres; the smaller diameter fibre gave rise to the higher crystallinity of the single carbonized fibre and, furthermore, a higher electrical conductivity and mechanical strength of the carbonized fibre web. The high anisotropy in the mechanical strength of the carbonized fibre webs was ascribed to the partial alignment of the resulting fibres along the winding direction through the electrospinning process. (C) 2007 Elsevier Ltd. All rights reserved.