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。
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-SiO_2 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-SiO_2 yields an increase in PPy content and PPy/APS-SiO_2 particles have a PPy-rich surface while PPy/SiO_2 silica-rich. Among them, the conductivity of PPy/1%APS-SiO_2 is the highest, which is (38.46) S/cm.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2004年第6期60-63,共4页
Polymer Materials Science & Engineering
基金
天津市自然科学基金重点资助项目(023802411)
