高等学校化学学报

高等学校化学学报

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石英晶体微天平技术在苯胺乳液聚合动力学研究中的应用

马利, 严俊, 甘孟瑜, 仇伟, 罗来正   

  1. 重庆大学化学化工学院, 重庆 400030
  • 收稿日期:2008-01-28 修回日期:1900-01-01 出版日期:2008-07-10 发布日期:2008-07-10
  • 通讯作者: 马利

Application of QCM Technique in the Kinetics Study of Aniline Emulsion Polymerization

MA Li*, YAN Jun, GAN Meng-Yu, QIU Wei, LUO Lai-Zheng   

  1. College of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400030, China
  • Received:2008-01-28 Revised:1900-01-01 Online:2008-07-10 Published:2008-07-10
  • Contact: MA Li

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被引次数

15

摘要： 采用石英晶体微天平(QCM)技术, 探讨了在有无磁场条件下, 用过硫酸铵(APS)作为引发剂时苯胺的乳液聚合动力学行为. 研究结果表明, 苯胺的乳液聚合反应速率对苯胺(An)是一级反应; 对APS和十二烷基苯磺酸(DBSA)均为0.5级反应. 磁场环境中苯胺的聚合速率比在无磁环境中的要快. 在有无磁场条件下, 反应的表观活化能分别为40.4和41.6 kJ/mol. 结果表明, QCM技术可以作为研究An聚合动力学的一种有效方法.

关键词: 聚苯胺, 石英晶体微天平, 动力学, 磁场

Abstract: The kinetic behavior of aniline(An) emulsion polymerization using ammonium persulfate(APS) as the initiator in the presence and absence of a constant magnetic field(MF) was discussed via the quartz crystal microbalance(QCM) technique. The experimental results indicate that the reaction rate exhibited first-order with respect to aniline and half-order to APS and dodecylbenzene sulfonic acid(DBSA). The aniline polymerization rate in the presence of a MF was higher than that of aniline polymerization in the absence of a MF. The activation energy obtained under the two conditions were 40.4 and 41.6 kJ/mol, respectively. It is suggested that the QCM technique can provide an efficient way for the kinetic research of An polymerization.

Key words: Polyaniline, Quartz crystal microbalance(QCM), Kinetics, Magnetic field

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