石墨/聚苯硫醚导电高聚物的结晶形态、微观多相结构和电导机制¹⁾

来源期刊：中南大学学报(自然科学版)1988年第5期

论文作者：韦钦 赖永玲 沈辉 邹新源 季明荣 吴建新

文章页码：578 - 586

关键词：导电材料； 高聚物； 晶体形态学； 导电性； 显微结构； 晶体掺杂； 电子显微象； 光电子谱法； X射线衍射分析/微观多相结构； 电导机制； 键合作用

Key words：conductor materials； highpolymer； crystal morphology； electrical conductivity； microstructure； crystal doping； electron microscopic image； photoelectron spectroscopy； X-ray diffraction analysis/multiple-phases microstructure； condutive mechanism;bond strength reaction；FTIR-PAS

摘    要：在聚苯硫醚（PPS）中掺入不同浓度的石墨,经共混、研磨、压型,在熔点下制成G/PPS导电高聚物。电导率从10^-16S/m上升到2S/m作出了“σ-y”曲线。曲线和前人同类物质曲线有显著不同。以高分辨透射电镜,SEM,X射线,XPS,FTIR-PAS技术研究了G/PPS的结晶形态、电荷转移、电子结构变化以及C—S键合作用的现象。发现G/PPS导电高聚物中有六方晶体石墨、G/PPS分层取向层状结构、G/PPS分层卷折结构、G/PPS交错薄层结构等四种共存的微多相。用C—S键合增强、有序度涨落的观点,讨论了电导机制。为提高材料性能和开发应用提供重要的信息。

Abstract: G/PPS conductive polymer is made from PPS（poly-p-phenylene sulphide）doped with graphite of different concentrations by the pressure molding methodat melting temperature.The conductivity is raised from 10^? to 2 S/m,the“σ-y”curve in drawn.The“σ-y”curve is obviously different campared with theprevious work.The phenomena of the crystalline morphologies,charge shift,elec-tron structure and C—S bond strength reaction are investigated by TEM,SEM,X-raydiffraction,XPS and FTIR-PAS for G/PPS conductive polymer.The four micro-structures of hexagon graphite polycrystalline structure,G/PPS degrees lamellarorientation structure,G/PPS curly lamellar structure and G/PPS alternatinglamellar structure are discovered in the G/PPS.The conductive mechanism of G/PPS is discussed with the point of view on“C—S”bond strength reaction andfluctuation of degrees of order.This will be very important to improve materials′charactristics and expand their application.