• 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 >PHYSICAL AND CHEMICAL PROPERTIES OF POLYPYRROLE-CARBON FIBER INTERPHASES FORMED BY AQUEOUS ELECTROSYNTHESIS
【24h】

PHYSICAL AND CHEMICAL PROPERTIES OF POLYPYRROLE-CARBON FIBER INTERPHASES FORMED BY AQUEOUS ELECTROSYNTHESIS

机译：水溶液电合成形成的聚吡咯-碳纤维相间的理化性质

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 properties of carbon fibers modified by aqueous electrochemical synthesis of pyrrole has been determined by using the dynamic contact angle analyzer (DCA), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). Electrochemical process parameters such as the initial pyrrole concentration, electrolyte concentration, applied voltage, electrolyte type, and reaction time were systematically varied, and their impact on the polypyrrole-carbon fiber interphases surface free energy and morphology was ascertained. The surface free energies of the polypyrrole-carbon fiber interphases were obtained by using single fiber filaments. SEM analysis of the interphases revealed several distinct surface structures, including smooth, porous, granular, microspheroidal, and leafoidal morphologies. The noncoated but commercially surface oxidized carbon fibers have smooth surface morphology with occasional longitudinal striations. FTIR analysis of the polypyrrole interphases confirmed that the counterions derived from the electrolytes were incorporated into the film. The surface free energies of the electrochemically formed polypyrrole-carbon fiber interphases equivalent to 60-75 dynes/cm, was determined to be up to 40% higher than that for the surface oxidized but unsized carbon fibers equivalent to 50 dynes/cm. This improvement in the surface free energies of the polypyrrole-carbon fiber interphases suggests easy wettability by polymer matrices such as epoxy resin, gamma similar to 47 dynes/cm and, polyimide matrix, gamma similar to 45 dynes/cm. (C) 1996 John Wiley & Sons, Inc. [References: 27]
机译：已经通过使用动态接触角分析仪（DCA），扫描电子显微镜（SEM）和傅里叶变换红外光谱（FTIR）确定了通过吡咯的水溶液电化学合成改性的碳纤维的性能。系统地改变了初始吡咯浓度，电解质浓度，施加电压，电解质类型和反应时间等电化学工艺参数，并确定了它们对聚吡咯-碳纤维相间表面自由能和形态的影响。聚吡咯-碳纤维相的表面自由能通过使用单根纤维丝获得。界面的SEM分析显示了几种不同的表面结构，包括光滑，多孔，颗粒状，微球形和叶状形态。未涂覆但商业化的表面氧化碳纤维具有光滑的表面形态，偶尔有纵向条纹。聚吡咯中间相的FTIR分析证实，源自电解质的抗衡离子已掺入薄膜中。电化学形成的聚吡咯-碳纤维中间相的表面自由能等于60-75达因/厘米，经测定比表面氧化但未定尺寸的碳纤维的50达因/厘米的表面自由能高40％。聚吡咯-碳纤维中间相的表面自由能的这种改善表明聚合物基质例如环氧树脂，类似于47达因/厘米的γ和聚酰亚胺基体类似于45达因/厘米的γ容易润湿。 （C）1996 John Wiley＆Sons，Inc. [参考：27]

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