摘要
以漂珠(FACs)为基体,利用γ-氨丙基三乙氧基硅烷(APS)对其表面进行处理,通过化学原位聚合的方法实现了聚吡咯(PPY)的有效负载,成功合成了PPY/APS/FACs复合材料。采用SEM、XPS以及TG表征分析了复合材料的表面形态、化学成分以及热稳定性等。结果表明,相对于FACs而言,用APS表面处理过的漂珠基复合材料其PPY负载量增多且热稳定性明显提高。本文亦研究证明引入聚乙烯吡咯皖酮(PVP)有助于抑制聚吡咯低聚体的产生,使漂珠表面形成规整的聚吡咯层。
The hybrid polypyrrole-coated,aminopropyltriethoxysilane-modified fly ash cenosphere composites（PPY/APS/FACs） were successfully synthesized by in situ polymerization method.Morphology,chemical elements and thermal stability of these fresh materials were characterized by SEM,XPS and TG,respectively.The results indicate that the loading amount of polypyrrole in PPY/APS/FACs is three times more than that in PPY/FACs.Compared with PPY/FACs,the thermal stability of PPY/APS/FACs is significantly improved.In this research,we also prove that the introduction of poly vingl pyrrolidone（PVP） helps restraining the formation of pyrrole oligomers and forming ordered polypyrrole layers on the surface of FACs.
出处
《粉煤灰综合利用》
CAS
2011年第2期20-23,共4页
Fly Ash Comprehensive Utilization
关键词
漂珠
硅烷偶联剂
聚吡咯
表面处理
fly ash cenosphere
silane coupling agent
polypyrrole
surface modification
