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.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
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)
关键词
掺杂态聚苯胺
乳液聚合
工艺控制
微结构特征
doped polyaniline
emulsification syntheses
process optimize
microstructure characteristics
