磁场(0.8T)环境中聚苯胺宏观掺杂动力学行为探讨  

Study on the apparent behavior of doping kinetics of polyaniline in a constant magnetic field(0.8T)

作　　者：马利[1] 陈超[1] 甘孟瑜[1] 卢苇[1] 陈奉强[1] 

机构地区：[1]重庆大学化学化工学院,重庆400044

出　　处：《功能材料》2008年第4期540-543,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(20176066)

摘　　要：在恒定磁场(0.8T)环境下,采用乳液法合成复合磺酸掺杂聚苯胺(PAn),探讨了PAn的掺杂机理,并对聚合过程中PAn的宏观掺杂动力学行为进行了研究。研究结果表明:外加磁场能明显提高苯胺聚合的反应速率,其取向作用能使PAn分子链更加伸展,有利于掺杂以及分子链的增长,具有更快的掺杂速率、更高的掺杂程度、特性粘度和溶解率,且掺杂主要发生在反应初始阶段。粒径分析结果表明磁场环境下合成的PAn粒子其粒径更小,分布更窄。Polyaniline（PAn） doped with multiple functionalized sulfonic acids system of dodecylbenzenesulfonic acid （DBSA） and sulfosalieylie acid （SSA）as the dopants were synthesized by emulsion polymerization method using ammonium persulfate （APS） as an oxidizing agent under the presence and the absence of a constant magnetic field （0.8T）. The doping mechanism and the apparent behavior of doping kinetics of the PAn were discussed. The result showed that the doping rate, doping degree,the polymerization rate, the yield,the inherent viscosity and the solubility of the PAn has been obviously improved in the magnetic field, and the doping reaction was mainly carried out at the beginning of the polymerization. The particle-size analysis result showed that in comparison with the corresponding PAn synthesized absence of the magnetic field, the particle-size of the PAn synthesized in the magnetic field was more smaller and the distribution was more narrower.

关 键 词：聚苯胺 磁场 掺杂行为 掺杂机理 

分 类 号：O631.1[理学—高分子化学]