磁场对复配乳化剂/苯胺微乳液聚合体系相行为的影响  

Magnetic Field Effects on the Phase Behavior of a Microemulsion System during Composite Emulsifier/Aniline Polymerization

作　　者：马利[1] 贾春悦[1] 甘孟瑜[1] 白有倩[1] 李志春[1] 郝少娜[1] 刘兴敏[1] 

机构地区：[1]重庆大学化学化工学院,重庆400044

出　　处：《化学学报》2011年第9期1053-1059,共7页Acta Chimica Sinica

摘　　要：首次在酸性条件下,以十二烷基苯磺酸钠(SDBS)和聚乙二醇辛基苯基醚(TX-100)为复配乳化剂,制备SDBS/TX-100/正丁醇(nBA)/苯胺(An)/盐酸(HCl)微乳液体系,并通过该体系的拟三元相图,考察了恒定磁场(0.4 T)、助表面活性剂(nBA)与复配乳化剂的质量比(Km=mnBA/mSDBS/TX-100)及SDBS与TX-100的质量比(Sm=mSDBS/mTX-100)对复配乳化剂/苯胺微乳液聚合体系相行为和电导行为的影响.结果表明:随着Km的增加,微乳区面积先增大后减小,当Km=1.0时,形成的微乳区面积最大;随着Sm的减少,微乳区面积逐渐增大;外加磁场可以增大微乳区面积,且随着Sm的减小,磁场对微乳液体系的作用逐渐减弱.循环伏安的测试结果表明,复合乳化剂微乳液法制备的聚苯胺,其循环伏安性能优于单组分乳化剂(SDBS或TX-100)微乳液法制备的聚苯胺.The effects of the magnetic field （MF） （0.4 T）, the mass ratio of n-butanol （nBA） to composite emulsifier （Km= mnBA/mSDBSrCX-IO0） and sodium dodecylbenzenesulfonate （SDBS） to Triton X-100 （TX-100） （Sm=msDBs/mTx-loo） on the phase behavior and conductivity of the microemulsion system during composite emulsifier/aniline polymerization were investigated by the pseudo-ternary phase diagram of SDBS/TX- 100/nBA/An/HCI, which was prepared by using SDBS and TX-100 as composite emulsifier under acidic conditions for the first time. The results showed that with the increase of Km, the area of microemulsion region increased initially and then decreased, the area reached the maximum on condition that Km is equal to 1.0; with the decrease of the Sin, the area increased gradually; the area was increased by the MF, and with the decrease of the Sm, the effect of MF on the microemulsion system was weakened. The characterization result of cyclic voltammogram （CV） showed that the CV property of the polyaniline prepared by microemulsion polymerization in the presence of composite emulsifier was better than that prepared in the presence of single emulsifier （SDBS or TX-100）.

关 键 词：苯胺 磁场 微乳液 相行为 拟三元相图 

分 类 号：O642.42[理学—物理化学]