【摘要】 用化学氧化聚合复合方法合成聚吡咯/二氧化硅(PPy/SiO2)纳米复合材料。首先用不同百分含量的氨丙基三乙氧基硅烷(APS)处理SiO2,然后以水为反应介质,通过化学聚合方法合成PPy/APS-SiO2纳米复合材料,并利用红外光谱、热失重、X射线光电子能谱(XPS)、透射电镜和四探针等手段进行表征。结果表明,用APS处理过的SiO2合成的复合材料PPy含量增加,且通过XPS看出PPy/APS-SiO2表面富有PPy,而PPy/SiO2表面富有SiO2。其中用1%APS-SiO2合成的复合材料电导率最高,为38.46S/cm。更多还原

【Abstract】 A new route for the synthesis of high conducting polypyrrole-silica composites was described. Silica particles were first modified by coupling agent aminopropyltriethoxy（APS） and then PPy/APS-SiO₂ nanocomposites were prepared by the chemical polymerization in the medium of water. The resulted materials were characterized by FT-IR, TGA,XPS, TEM and four-probe measurements. It shows that the composites synthesized with APS-SiO₂ yields an increase in PPy content and PPy/APS-SiO₂ particles have a PPy-rich surface while PPy/SiO₂ silica-rich. Among them, the conductivity of PPy/1%APS-SiO₂ is the highest, which is （38.46） S/cm.更多还原