Core-shell attapulgite@polypyrrole composite with well-de?ned corn cob-like morphology via self-assembling and in situ oxidative polymerization
writer：Chao Yang, Peng Liu
keywords：Attapulgite， cob-like morpholog， self-assembling y
source：期刊
specific source：Synthetic Metals
Issue time：2011年
Conductive polypyrrole (PPy) layer was chemically grafted from the self-assembled monolayer (SAM)
coated on ATP, resulting in SAM-ATP@PPy composites after attapulgite (ATP) particles were surface
modi?ed. The composites possess high electrical conductivity at room temperature, weakly tempera-
ture dependence of the conductivity. X-ray diffraction (XRD) analysis con?rmed that the main peaks of
SAM-ATP@PPy composites are similar to the SAM-ATP particles, which reveal that the crystal structure
of SAM-ATP is well-maintained after the coating process under polymerization conditions and exhibit
semi-crystalline behavior. Thermogravimetric analysis shows that the thermal stability of SAM-ATP@PPy
composites was enhanced and these can be attributed to the retardation effect of amine-functionalized
ATP as barriers for the degradation of PPy. The morphology of SAM-ATP@PPy composites showed the
?brillar structure and well-de?ned corn cob-like morphology.