不同态煤基聚苯胺的结构与性能

Configuration and Performance of Coal-Based Polyaniline in Different Forms

采用溶液再掺杂法制备了DBSA二次掺杂态煤基聚苯胺(CBP-R-DBSA),得出较佳的二次掺杂条件:时间24 h,温度30℃,酸浓度1.2 mol/L,所得产物电导率为6.08×10-2 S/cm。分析探讨了煤基聚苯胺的掺杂-脱掺杂过程及不同态煤基聚苯胺的结构与性能,结果表明:原位聚合引入的外加酸与煤大分子酸对聚苯胺具有协同掺杂效应,煤基聚苯胺的掺杂-脱掺杂不完全可逆,煤表面酸性基团的掺杂作用相应减少了聚苯胺链上的掺杂活性点,这限定了DBSA对U-CBP的有效二次掺杂,其掺杂效果逊于乳液聚合原位掺杂。

Adopting solution redoping method to prepare Coal-based Polyaniline redoped DBSA （CBP-R-DBSA）, conductivity of which extend 6.08× 10-2 S/cm in better doping conditions, which was time 24 h, temperature 30 ℃ , acid concentration 1.2 mol/L. Discussing CBP doping-dedoping course, and analysing configuration and performance of CBP in different forms. The results showed that added acid introduced by in-situ polymerization and coal macromolecule acid play cooperating doped action on PAn. CBP doping-dedoping course was imcompleted reversible. Doping action of acidic groups in surface of coal decreased active points on PAn chain, and which restrictd U-CBP redoped with DBSA effectively. Be compared to method of emulsion polymerization in-situ doped,effect of solution redoping was inferior.