中文摘要：

采用溶剂热法制备TiO2微球,在其表面通过原位化学氧化聚合法制备聚吡咯（PPy）从而获得TiO2/PPy复合导电微球,分别使用FTIR、XRD、SEM以及四探针电阻仪对其进行表征。结果表明TiO2为锐钛矿型,微球尺寸均匀,直径约1.5μm,分散性良好;原位聚合的PPy呈球形附着于TiO2表面。随着吡咯（Py）与TiO2摩尔比的增加,TiO2/PPy复合导电微球的电阻率先急剧减小,而后当Py与TiO2的摩尔比大于2时,电阻率基本不变,约为0.161Ω·cm。所制备的复合导电微球可用于静电防护、精密仪器电磁屏蔽等领域。

英文摘要：

After TiO2 microspheres were synthesized with facile solvothermal approach,TiO2/PPy composite conducting microspheres were synthesized in situ via chemical oxidative polymerization of pyrrole monomers on the surface of TiO2 microspheres.The properties of the TiO2/PPy composite conducting microspheres were characterized by FTIR,XRD,SEM and four-probe resistance meter.The results showed that the TiO2 was in anatase shape and the microsphere had uniform size and good dispersibility with the diameter of 1.5μm.The PPy was spherical and polymerized on the surface of the TiO2 microspheres.The resistivity dropped sharply with the increased mole ratio of Py and TiO2,while the resistivity remained 0.161Ω·cm when the mole ratio of Py and TiO2 was more than 2.The composite conducting microspheres could be applied in the field of electrostatic protection,electromagnetic shielding of precision instruments.