高等学校化学学报

高等学校化学学报

• 高分子化学 • 上一篇    下一篇

聚苯胺的表面修饰及防腐性能

甘孟瑜, 李志春, 马利, 郝少娜, 贾春悦, 刘兴敏   

  1. 重庆大学化学化工学院, 重庆 400030
  • 收稿日期:2011-03-30 发布日期:2012-02-16
  • 通讯作者: 甘孟瑜, 女, 教授, 主要从事功能高分子材料、 乳液聚合研究. E-mail:mlsys607@126.com

Surface Modification and Anticorrosive Properties of Polyaniline

GAN Meng-Yu, LI Zhi-Chun, MA Li, HAO Shao-Na, JIA Chun-Yue, LIU Xing-Min   

  1. College of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400030, China
  • Received:2011-03-30 Published:2012-02-16

PDF (PC)

被引次数

15

摘要：

用八甲基环四硅氧烷(D4)对聚苯胺(PANI)进行表面修饰, 通过对产物的循环伏安(CV)、 极化曲线(Tafel)以及接枝率的表征分析, 考察了反应温度、 反应时间、 单体用量和pH值对产物的接枝效果、 分散性和腐蚀电位的影响. 同时, 通过循环伏安(CV)、 紫外-可见光谱(UV-Vis)、 红外光谱(FTIR)、 X射线衍射分析(XRD)和热重分析(TGA), 对PANI表面修饰前后的结构和性能进行了比较. 结果表明, 通过D4对PANI颗粒表面进行修饰, PANI的分散性、 分散稳定性和和防腐能力得到显著提高.

关键词: 聚苯胺, 表面修饰, 八甲基环四硅氧烷, 防腐性能

Abstract:

The surface of PANI was modified by octamethylcyclotetrasiloxane(D4). The effects of reaction temperature, time, the amount of monomer and pH on the grafting effect, dispersibility and corrosion potential were investigated by characterizing cyclic voltammetry(CV), polarization curves(Tafel) and grafting yield of the modified PANI. Besides, the structures and properties of PANI before and after modifying were compared with CV, UV-Vis, FTIR spectra, X-ray diffraction(XRD) and thermogravimetry(TGA). The results indicate that the surface of PANI is modified effectively by D4, and the dispersibility, dispersibility stability and anti-corrosion of PANI are enhanced significantly.

Key words: Polyaniline, Surface modification, Octamethylcyclotetrasiloxane, Anticorrosion

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