• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Thermal, electrical, and dielectric properties of reduced graphene oxide-polyaniline nanotubes hybrid nanocomposites synthesized by in situ reduction and varying graphene oxide concentration
【24h】

Thermal, electrical, and dielectric properties of reduced graphene oxide-polyaniline nanotubes hybrid nanocomposites synthesized by in situ reduction and varying graphene oxide concentration

机译：通过原位还原和改变石墨烯氧化物浓度合成的石墨烯氧化物 - 聚苯胺纳米管杂交纳米复合材料的热，电和介电性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, reduced graphene oxide (RGO) has been introduced as conductive filler within polyaniline (PAni) nanotubes (PAniNTs) by in situ chemical reduction method to enhance the properties of PAniNTs. The effect of varied concentration of in situ reduced GO on the structural, thermal, electrical, and dielectric properties of RGO-PAniNTs nanocomposites have been investigated by high resolution transmission electron microscope, X-ray diffraction, Fourier transform infrared, thermogravimetric analysis, I-V characteristics, and impedance analyzer. The enhanced thermal stability of the nanocomposites has been analyzed from the derivative thermogravimetric curves in terms of onset and rapid decomposition temperature. The transport mechanisms have been studied by fitting the nonlinear I-V characteristics to the Kaiser model. The dielectric relaxation phenomena have been investigated by permittivity and modulus formalisms. Characteristic relaxation frequency of RGO-PAniNTs nanocomposites shifts toward higher frequency with increasing RGO concentration indicating a distribution in conductivity relaxation. The distribution of relaxation time has been studied by fitting the imaginary modulus spectra of the nanocomposites to Bergman modified KWW function. The ac conductivity spectra are fitted to the Jonscher's power law equation and enhanced conductivity value of 1.26 x 10(-3) Scm(-1) is obtained for 40 wt % of RGO compared to 1.22 x 10(-4) Scm(-1) for PAniNTs. (c) 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45883.
机译：在该研究中，通过原位化学还原方法在聚苯胺（PANI）纳米管（面板）内引入了石墨烯（RGO）作为导电填料，以增强面板的性质。通过高分辨率透射电子显微镜，X射线衍射，傅立叶变换红外，热重分析，IV特性研究了变化纳米复合材料的结构，热，电和电介质的结构，热，电和电学性能的效果降低了Rgo-Panints纳米复合材料的效果和阻抗分析仪。在发作和快速分解温度方面，已经从衍生热重曲线分析了纳米复合材料的增强的热稳定性。已经通过将非线性I-V特性拟合到Kaiser模型来研究运输机制。通过介电常数和模量形式主义研究了介电松弛现象。 Rgo-Panints纳米复合材料的特征弛豫频率随着rgo浓度的增加而转向更高的频率，表明导电性松弛的分布。通过将纳米复合材料的假想模量光谱拟合到Bergman改性的KWW功能来研究弛豫时间的分布。 AC电导率光谱装配到Jonscher的功率规律方程，并且获得了1.26×10（-3）SCM（-1）的增强的电导率值，而40wt％的RgO为1.22×10（-4）SCM（-1 ）对于面板。 （c）2017 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018,135,45883。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号