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采用石英晶体微天平(QCM)技术,探讨了以三氯化铁(FeCl3)和过硫酸铵(APS)为复合氧化剂,十二烷基苯磺酸(DBSA)为乳化剂和掺杂剂时,苯胺(An)的乳液聚合动力学行为;并通过对产物的循环伏安分析,初步优化了聚合反应条件.结果表明,An的乳液聚合反应对复合氧化剂、An以及DBSA分别为1,0.5和0.5级.各种条件下的循环伏安(CV)图都显示出PAn的三对氧化还原特征峰.当FeCl3与APS物质的量比为2∶1;氧化剂总量与苯胺的物质的量比为3∶1;DBSA浓度为0.05mol/L时,CV测试的峰电流和电导率最大.
The quartz crystal microbalance (QCM) technique was used to investigate the effects of FeCl3 and APS as complex oxidant and dodecylbenzenesulfonic acid (DBSA) as emulsifier and dopant, An (An) emulsion polymerization kinetics behavior; and by cyclic voltammetry analysis of the product, initially optimized polymerization conditions.The results show that the An emulsion polymerization reaction of complex oxidant, An and DBSA were 1, 0.5 and 0.5 The cyclic voltammograms (CV) under various conditions showed three pairs of redox peaks of PAn.When the molar ratio of FeCl3 to APS was 2:1, the ratio of the amount of oxidant to the amount of aniline was 3: 1. When the concentration of DBSA was 0.05 mol / L, the peak current and the conductivity of CV were the highest.