【摘要】 以苯胺为单体,过硫酸铵为氧化剂,三氯甲烷和水为反应介质,十二烷基苯磺酸为乳化剂和掺杂剂,进行乳液聚合,得到可溶性聚苯胺。将聚苯胺、聚苯乙烯共溶于二甲苯后制成共混膜,用广角X射线衍射、红外光谱、偏光显微镜分析了共混膜的相形态。结果表明:聚苯胺/聚苯乙烯为不相容体系,在聚苯胺含量低时,聚苯胺以多粒子分散相存在,此时共混膜电导率低,但随聚苯胺质量分数增加电导率迅速增大;在聚苯胺质量分数达到某一阈值(7.5％)后,聚苯胺开始形成连续相,此时共混膜电导率相对较大,但电导率随聚苯胺质量分数而增大的趋势减缓。更多还原

【Abstract】 The soluble polyaniline(PANI) was obtained by using emulsion polymerization from aniline in warter-chloroform-DBSA system and dodecylbenzene sulphonic acid (DBSA) as emulsifier and doping agent. PANI and Polystyrene were cosolved in xylene and casted into blend films. The morphologies of the blend films were investigated by means of FT-IR spectroscopy , X-ray diffraction and polarized microscopy. It was found that at low load PANI dispersed as isolated particles and the blend films were of poor conductivity, moreover, with the load up to 7. 5%, PANI began to form continued structures via phase reverse and the blend films showed an appreciable conductivity more than 0. 016 9 S/cm.更多还原