Structure and Property of Electrospun PAN Nanofibers by Different Pre-oxidated Heating Rates
Structure and Property of Electrospun PAN Nanofibers by Different Pre-oxidated Heating Rates
复制标题
不同预氧化加热速率静电纺PAN纳米纤维的结构与性能
DOI：
10.1177/1528083710394889
复制
发表时间：
2011-01
影响因子：
3.2
通讯作者：
Qin XiaoHong
中科院分区：
文献类型：
--
作者：
Qin XiaoHong
静电纺丝是从不同聚合物和聚合物共混物的溶液制备亚微米纤维的相对简单的方法。采用静电纺丝法制备聚丙烯腈纤维网，并对其进行预氧化处理。讨论了预氧化加热速度对预氧化网结构和性能的影响。利用热重（TG）曲线比较了PAN预氧化样品在不同升温速率下的热稳定性。TG曲线表明，当预氧化升温速率为5°C/min时，整体过程分解温度最高，即在此条件下预氧化纳米纤维网的热稳定性最好。水分分析结果表明，随着预氧化升温速率的增大，试样的质量损失率逐渐增大。差示扫描量热分析表明，升温速率对预氧化产物中心度的影响不明显，红外光谱分析表明，预氧化产物的最终结构是环化和脱氢反应形成的。特别地，在5°C/分钟的预氧化加热速率下，可以从预氧化纳米纤维获得具有光滑表面和小纤维分散以及截面的实心且无空纤维结构的碳纳米纤维。
Electrospinning is a relatively simple method to produce submicron fibers from solutions of different polymers and polymer blends. In this study, PAN (polyacrylonitrile) fibers web was fabricated by electrospinning, and then was pre-oxidated. Effects of pre-oxidated heating rate on the structure and property of pre-oxidation web were discussed in this article. Thermal gravimetric (TG) curves were used to compare the thermal stability of PAN pre-oxidated samples under different pre-oxidated heating rates. TG curves showed that the integral procedural decomposition temperature was the highest when the pre-oxidated heating rate was 5°C/minute, that is, the thermal stability of pre-oxidated nanofibrou web was the best under this condition. Moreover, results showed that with pre-oxidated heating rate increasing, the rate of mass loss gradually increased by moisture content analysis. Effect of the heating rate on central degree of the pre-oxidated web was not obvious by differential scanning calorimetry analysis, and the cyclization and dehydrogenation formed the final structure of the aromatic by infrared spectroscopy analysis. Especially, carbon nanofibers could be obtained from the pre-oxidated nanofibers at pre-oxidated heating rate 5°C/minute with smooth surface and small fiber dispersion as well as solid and no empty fiber structure of the section.
登录
查看更多内容
影响因子：
3.2
作者：
He, Ji-Huan;Xu, Lan;Liu, Yong
通讯作者：
Liu, Yong
DOI：
10.1023/a:1018594311323
发表时间：
1997-03
期刊：
Journal of Materials Science Letters
影响因子：
--
作者：
J. Tsai
通讯作者：
J. Tsai
不同预氧化温度静电纺PAN纳米纤维的结构与性能
影响因子：
4.4
作者：
Qin, Xiao-Hong
通讯作者：
Qin, Xiao-Hong
影响因子：
3
作者：
WANG, PH;LIU, J;LI, RY
通讯作者：
LI, RY
影响因子：
3
作者：
Jalili, Rouhollah;Morshed, Mohammad;Ravandi, Hosseini
通讯作者：
Ravandi, Hosseini