中文摘要：

研究了在0．2T的磁场作用下，采用微乳液法以十二烷基苯磺酸钠（SDBS）为乳化剂，过硫酸铵（APS）为氧化剂，大分子磺基水杨酸（SSA）为掺杂剂制备导电聚苯胺（PAn），并结合红外光谱、X射线衍射、粒径分析、电导率等手段对其结构及性能进行表征．结果显示：磁场作用可以提高PAn的电导率、掺杂度和腐蚀电位，但对PAn基本单元结构没有影响；与无磁场条件下合成的PAn相比，磁场条件下合成的PAn具有更高的结晶度和明显的微观取向结构，且反应时间从3h减少到2h，掺杂酸浓度（CSSA）从0．4mol·L^1减小到0．3mol·L^-1，乳化剂与苯胺单体的摩尔比（nSDBS／nAn）从0．6减少到0．45，PAn的电导率从0．85S·cm^-1增加到1．55S·cm^-1．

英文摘要：

Under the presence of a constant magnetic field （0.2T）, conducting polyaniline （PAn） was synthesized by microemulsion polymerization with sodium dodecylbenzenesulfonate （SDBS） as emulsifier, ammonium peroxydisulfate （APS） as oxidant and sulfosalicylic acid （SSA） as doping agent. The properties and structure of PAn were characterized by infrared spectrum, X-ray diffraction, particle-size analysis and conductivity measurement. The results indicate that the conductivity, doping ratio and corrosive potential of PAn are improved under the presence of magnetic filed, and no effect of magnetic field on the basic structural units of PAn is observed. Compared with the PAn synthesized under the absence of magnetic field, the PAn synthesized under the presence of magnetic field has a higher crystaUinity and obvious microscopic orientation structure, the polymerization time decreases from 3 to 2 h, the concentration of doped acid （CssA） decreases from 0.4 to 0.3 mol· L^-1, the mole ratio of SDBS and aniline monomer （n SDBS/n An） decreases from 0.6 to 0.45, and the conductivity of PAn increases from 6.42S·cm^-1 to 10.01 S·cm^-1.