以ZnO-g-PSS纳米线为模板的PEDOT/PSS纳米线/管的大规模制备研究

项目名称： 以ZnO-g-PSS纳米线为模板的PEDOT/PSS纳米线/管的大规模制备研究

项目编号： No.51273013

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 马育红

作者单位： 北京化工大学

项目金额： 80万元

中文摘要： PEDOT/PSS微观相分离导致的电导率降低和对温湿度的敏感性，限制了其应用范围。大长径比的PEDOT纳米线/管比相应的纳米粒子有更高的电导率，但大规模制备仍是一个难题。基于集成创新的思路，设计了一种制备PEDOT/PSS纳米线/管的新方法。以氧化锌纳米线(NWZnO)为模板，在NWZnO表面利用硅烷偶联剂的化学修饰和可控接枝自由基聚合，制备NWZnO-g-PSS。然后通过EDOT的原位化学氧化聚合，得到PEDOT/PSS@NWZnO的纳米线/管。技术关键是通过调控PSS接枝链的结构，如接枝密度、接枝链长和共接枝，实现对EDOT/PSS层厚度和微观形貌的调控。特别是通过共接枝聚合，在PSS接枝链中引入交联结构和EDOT单元。在PEDOT与PSS掺杂剂之间形成共价键连接的互穿网络。通过对PEDOT与PSS的微观相分离的限制，实现提高电导率和降低电导率对温湿度敏感性的目的。

中文关键词： 导电聚合物；纳米复合材料；介电性能；PEDOT；表面改性

英文摘要： The aqueous dispersion of intrinsic conductive polymer complex, poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) has been widely used in capacitor, anti-static coatings, sensor, and etc, for its moderate band gap, low redox potential, and high optical transparency in its electrically conductive state. However, its conductivity decreases rapidly at the high temperature or high humidity which is related to the microphase separation between conductive PEDOT domain and hydrophilic PSS domain.In addition, it has been demonstrated that the conductivity of PEDOT nanowire and nanotube with high respect ratio is much higher than that of the nanoparticle of granular powder. However, the PEDOT nanowire and nanotube are mainly fabricated by electrochemical polymerization with template and physical approaches such as electrospinning. Though there are many existing technologies available but the large scale production of PEDOT nanowire and naotube with controlled morphologies and sizes is still a great challenge. Herein, we proposed a novel strategy to prepare the PEDOT/PSS naowire and tube with controlled size and morphology in large scale. The process is consisted in three steps. The first is to synthesize nanowire of ZnO (NWZnO) in large scale with tunable diameters and lengths by the reaction of comme

英文关键词： conductive polymer；namocomposites；dilectrics；PEDOT；surface modification