掺杂态聚苯胺合成工艺的优化及其微结构研究  

Process optimize on the doped polyaniline synthesis and it microstructure

作　　者：余大书[1] 张明福[2] 张乃庆[2] 郝延明[1] 

机构地区：[1]天津师范大学物理与电子信息学院,天津300074 [2]哈尔滨工业大学复合材料与结构研究所,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2006年第10期1693-1696,共4页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50271022);天津市高等学校发展基金资助项目(20041022);天津师范大学校基金资助项目(5RL019)

摘　　要：在水/甲苯/十二烷基磺酸(DBSA)体系中采用乳化剂复配技术乳液合成工艺,能显著改善聚苯胺的溶解性能.在确定DBSA/苯胺、过硫酸铵/苯胺的量的合理比例及过硫酸铵的最佳滴加时间的基础上,乳液合成聚苯胺.产物的红外光谱、X射线衍射、热重-差热、光电子能谱测试和分析表明:DBSA对PANI进行了有效的掺杂,产物的主要结构为M acD iarm id完全掺杂态,且醌式结构的氮原子全部质子化.聚合物具有一定的结晶性,热稳定性好,但易被空气氧化,溅射条件对聚合物有明显脱掺杂影响.产物的产率成倍提高,PAN-DBSA已经部分晶化并具有很高的热稳定性.A conducting polyaniline was prepared by emulsification through H2O-Toluenc-DBSA system. Molar ratio of DBSA/An, （NH4）2S2O8/An, and optimal drop time of （NH4）2S2O8 were studied in this synthesis process. As to the difficult problem of post-treatment, the multiple emulsion technology was used to improve the emulsifying process. Product yield was greatly raised and post-treatment procedure was simplified. IR, XRD, TG - DTA and XPS analyses and experimental results indicated that the product was doped very well by DBSA; and the products structure was replaced by the MacDiarmid full doped state, the nitrogen atom had replaced proton completely, and the polymer had some crystalline phenomenal and presented thermal stability.

关 键 词：掺杂态聚苯胺 乳液聚合 工艺控制 微结构特征 

分 类 号：O561.3[理学—原子与分子物理]