Preparation of well-defined blackberry-like polypyrrole/fly ash composite microspheres and their electrical conductivity and magnetic properties
作者： Chao Yang , Tingmei Wang , Peng Liu , Huigang Shi , Desheng Xue
DOI: 10.1016/J.COSSMS.2009.06.002
关键词:
摘要: Abstract Composites consisting of conducting polypyrrole (PPy) and fly ash (FA) or amino-functionalized (A-FA) were prepared by the in situ chemical oxidative polymerization method, respectively. The surface functionalization with amino groups was found to play an important role formation well-defined blackberry morphology. scanning electron microscopy (SEM) analysis showed that blackberry-like morphology polypyrrole/amino-functionalized (PPy/A-FA) composites size range 0.3–5 μm became smoother more A-FA charged polymerization. X-ray diffraction (XRD) PPy/A-FA similar patterns as FA, which revealed crystal structure FA well-maintained after Thermogravimetric (TGA) thermal stability enhanced this could be attributed retardation effect amine-functionalized ashes barriers for degradation polypyrrole. possess high electrical conductivity at room temperature, weak temperature dependence good magnetic properties.
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