Fundamental parameters affecting electrospinning of PAN nanofibers as uniaxially aligned fibers
Fundamental parameters affecting electrospinning of PAN nanofibers as uniaxially aligned fibers
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DOI：
10.1002/app.24290
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发表时间：
2006-09-15
影响因子：
3
通讯作者：
Ravandi, Hosseini
中科院分区：
文献类型：
--
作者：
Jalili, Rouhollah;Morshed, Mohammad;Ravandi, Hosseini
利用收集器静电纺丝，收集器由两块由间隙隔开的导电衬底组成，用来制备单轴取向的PAN纳米纤维。初步采用15wt%的PAN/DMF溶液进行静电纺丝。利用傅里叶功率谱图像处理技术，研究了间隙宽度和外加电压对取向程度的影响。实验得到了溶液浓度为10-15wt%时纳米纤维最佳取向的电纺条件。用一种新的简单方法制备了单轴取向纳米纤维的复丝束状纱线。这些束的后处理是在张力下的沸水中进行的。比较了后处理和未处理后的结晶度和力学性能。(C)2006年威利期刊公司。
Electrospinning with a collector consisting of two pieces of electrically conductive substrates separated by a gap has been used to prepare uniaxially aligned PAN nanofibers. Solution of 15 wt % of PAN/DMF was used tentatively for electrospinning. The effects of width of the gap and applied voltage on degree of alignment were investigated using image-processing technique by Fourier power spectrum method. The electrospinning conditions that gave the best alignment of nanofibers for 10-15 wt % solution concentrations were experimentally obtained. Bundles like multifilament yarns of uniaxially aligned nanofibers were prepared using a new simple method. After-treatments of these bundles were carried out in boiling water under tension. A comparison was made between the crystallinity and mechanical behavior of posttreated and untreated bundles. (c) 2006 Wiley Periodicals, Inc.