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首页> 外文期刊>Journal of materials science >Synthesis of special acrylic nanofibers as an appropriate precursor for conductive carbon nanofibers
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Synthesis of special acrylic nanofibers as an appropriate precursor for conductive carbon nanofibers

机译：合成特殊的丙烯酸纳米纤维作为导电碳纳米纤维的合适前体

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摘要

Electrospinning technique is a significant approach used for producing special acrylic nanofibers (SANFs) through applying electrostatic field. SANFs were electrospun from polyacrylonitrile (PAN) copolymer solutions to be used as a precursor for carbon nanofibers (CNFs). The Box-Benkhen design (BBD) was used to elucidate the effects of the acrylic concentration (wt%), electrospinning voltage (kV), and spinning distance (cm) on the SANFs surface morphology and optimize these parameters. Based on BBD model the optimum SANFs diameter of 292nm and 14.20% coefficient of variation, were collected at 9.3wt% PAN concentration, 14kV applied voltage, and 20cm spinning distance. The optimized SANFs manufactured under BBD settings were specified by scanning electron microscope (SEM), mechanical tester, and differential scanning calorimeter (DSC). The optimized SANFs was stabilized in air and then carbonized in inert atmosphere at 800, 1000, and 1200 degrees C, respectively. The electrical conductivity of CNFs samples obtained from SANFs at 800 degrees C carbonization temperature is 2.31x10(-2)S/cm, which is increased to 2.60x10(+1)S/cm at 1200 degrees C. The results indicated that, the optimized SANFs possessed the most desired morphological properties, mechanical characteristics, and thermal stability; and thus they are appropriate for the development of high-performance CNFs.
机译：电纺丝技术是一种通过施加静电场来生产特殊的丙烯酸纳米纤维（SANF）的重要方法。 SANF是从聚丙烯腈（PAN）共聚物溶液中静电纺丝而成的，可用作碳纳米纤维（CNF）的前体。 Box-Benkhen设计（BBD）用于阐明丙烯酸浓度（wt％），电纺丝电压（kV）和纺丝距离（cm）对SANF表面形态的影响，并优化这些参数。基于BBD模型，在PAN浓度9.3wt％，施加电压14kV和旋转距离20cm的条件下，收集到了最佳的SANF直径292nm和变异系数14.20％。在BBD设置下制造的优化SANF由扫描电子显微镜（SEM），机械测试仪和差示扫描量热仪（DSC）指定。优化的SANF在空气中稳定，然后在惰性气体中分别在800、1000和1200摄氏度下碳化。在800摄氏度的碳化温度下，从SANF获得的CNF样品的电导率为2.31x10（-2）S / cm，在1200摄氏度时增加至2.60x10（+1）S / cm。结果表明，优化的SANF具有最理想的形态学特性，机械特性和热稳定性；因此，它们适用于高性能CNF的开发。

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  • 来源
    《Journal of materials science》 |2019年第7期|7005-7017|共13页
  • 作者

    Nasouri Komeil; Shoushtari Ahmad Mousavi; Namazi Fariba;

  • 作者单位

    Isfahan Univ Technol, Dept Text Engn, Esfahan 8415683111, Iran;

    Amirkabir Univ Technol, Dept Text Engn, Tehran 158754413, Iran;

    Amirkabir Univ Technol, Dept Text Engn, Tehran 158754413, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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