• 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 >Preparation of 2D leaf-shaped and 3D flower-shaped sandwich-like polyaniline nanocomposites and application on anticorrosion
【24h】

Preparation of 2D leaf-shaped and 3D flower-shaped sandwich-like polyaniline nanocomposites and application on anticorrosion

机译：2D叶形和3D花形夹心状聚苯胺纳米复合材料的制备及其对抗施用

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

The synthesis of triple-layer-structured polyaniline (PANI) conductive nanocomposites, including two-dimensional leaf-shaped and three-dimensional flower-shaped types (S-PANI), via a two-step method is proposed in this study. According to scanning electron microscopic measurement, the triple-layer-structured S-PANI consists of a middle layer of nonconductive PANI (N-PANI) at 100 nm thickness and emeraldine-salt-form PANI (ES-PANI) nanolayer at 40-50 nm thickness. The results of Fourier-transform infrared spectroscopy, UV/Vis spectroscopy, and X-ray diffraction pattern demonstrate that the phenazine unit existed within the N-PANI main chain, leading to the poor conductivity of N-PANI. However, the conductivity of the N-PANI can be extremely enhanced by at least nine orders of magnitudes (<10(-9)-10(0) S/cm) when a conductive ES-PANI nanolayer is further grown on the N-PANI outer surface. Finally, the results of oxygen transmission test and electrochemical impedance spectroscopy reveal that the leaf-shaped S-PANI, as an additive in epoxy resin, has the best oxygen barrier property (oxygen transmission rate = 5.86 cm(3)m(-2)day(-1)) and highest coating resistance (5.53 x 10(10) omega) after 60-day immersion in 0.1 M HCl solution, indicating that the leaf-shaped S-PANI is an excellent anticorrosion additive.
机译：本研究采用两步法合成了三层结构聚苯胺（PANI）导电纳米复合材料，包括二维叶型和三维花型（S-PANI）。根据扫描电子显微镜测量，三层结构的S-PANI由100 nm厚的中间非导电PANI（N-PANI）层和40-50 nm厚的祖母绿盐状PANI（ES-PANI）纳米层组成。傅里叶变换红外光谱、紫外/可见光谱和X射线衍射图谱的结果表明，吩嗪单元存在于N-PANI主链中，导致N-PANI的导电性差。然而，当导电的ES-PANI纳米层进一步生长在N-PANI外表面上时，N-PANI的导电性可以极大地提高至少九个数量级（<10（-9）-10（0）S/cm）。最后，透氧测试和电化学阻抗谱的结果表明，叶状S-PANI作为环氧树脂的添加剂，在0.1M HCl溶液中浸泡60天后，具有最佳的阻氧性能（透氧率=5.86cm（3）m（-2）d（-1））和最高的涂层电阻（5.53x10（10）Ω），表明叶状S-PANI是一种优良的防腐添加剂。

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