单分散核/壳结构导电高分子复合材料的研究(Ⅰ)——单分散核/壳结构聚苯乙烯/聚吡咯的结构表征

• 作 者: 杨正龙 侯文博 刘正平 黄俐研 彭笑刚
• 机 构: 北京师范大学化学系,北京师范大学化学系,北京师范大学化学系,北京师范大学化学系,阿肯色大学化学与生物化学系 北京100875,北京100875,北京100875,北京100875,Fayettevil
• 出 处: 高等学校化学学报
• 发表日期: 2002年10期
• 关键词: 单分散 聚吡咯 导电高分子 壳结构 结构表征 渗滤阈值 机械共混物 导电复合材料 阴离子乳化剂 亚微米级

Monodisperse core/shell latex particles composed of a polystyrene(PS) core and a thin conductive polypyrrole (PPy) shell were synthesized by means of two-stage emulsion polymerization. Proofs for the success of core/shell synthesis were obtained by using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy(XPS). Pressed pellet conductivity measurements on the dried composites indicated a low percolation threshold of 13.8%. The conductivity for the composites was higher than that of a heterogeneous admixture of dried PS latex and PPy bulk powder. The highest conductivity of the core/shell composite was 0.14 S/cm.

Monodisperse core / shell latex particles composed of a polystyrene (PS) core and a thin conductive polypyrrole (PPy) shell were synthesized by means of two-stage emulsion polymerization. Proofs for the success of core / shell synthesis were obtained by using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Pressed pellet conductivity measurements on the dried composites indicated a low percolation threshold of 13.8%. The conductivity for the composites was higher than that of a heterogeneous admixture of dried PS latex and PPy bulk powder. The highest conductivity of the core / shell composite was 0.14 S / cm.