将氧化石墨超声分散,在水合肼的作用下制备了在水相条件下稳定分散的还原氧化石墨烯(RGO);以十六烷基三甲基溴化铵(CTAB)为模板剂,RGO为掺杂剂,吡咯单体为原料,六水合三氯化铁(FeCl3·6H2O)为引发剂聚合制备聚吡咯/还原氧化石墨烯(PPy/RGO)导电复合材料。利用傅里叶红外光谱、X射线衍射和透射电子显微镜等手段对复合材料的理化性质进行表征,结果表明线状PPy成功聚合在RGO表面;热重分析和电导率测试结果显示,复合材料相对于PPy具有更高的热稳定性和电导率,电导率可达14S/cm。将PPy/RGO复合材料水性聚氨酯乳液制成复合涂层,考察了涂层的抗静电性能,发现PPy/RGO复合材料具有更低的逾渗阈值。
The colloidal form of graphene (RGO) was subsequently prepared by ultrasonic dispersed graphite oxide in the presence of hydrazine hydrate.Polypyrrole/RGO(PPy/RGO) compound material was successfully prepared via in-situ chemical oxidative polymerization of pyrrole monomers by using hexadecyl trimethyl ammonium bromide (CTAB) as template agent,RGO as dopant,pyrrole as material and iron(Ⅲ) chloride hexahydrate as polymerization initiator.The physical and chemical property of composite were characterized by fourier transform infrared (FT-IR),X-ray diffraction (XRD) and transmission electron microscope (TEM).The results indicated that PPy nanowires were successfully polymerized on the surface of RGO.Moreover,thermal gravimetric analysis (TGA) indicated that PPy/RGO composites had more superior thermal stability than pure PPy.The variation of electrical conductivity showed substantial increment.The electric conductivity of composite prepared under the optimum conditions was about 14 S/cm.Waterborne polyurethane composite coatings were prepared with PPy/RGO composites as conductive fillers.By investigating the antistatic property of coatings,PPy/RGO composites had a lower percolation threshold.
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基金资助
镇江市工业支撑项目(GY2014037)
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