Several methods were chosen to try to synthesis polyaniline(PAn)-graphite oxide (GO) composites in this paper. It was experimentally shown aniline could be easily inserted into GO layers

however

lower oxidative potential could not oxidatively polymerize the intercalated aniline to form polyaniline intercalated graphite oxide nanocomposite(Comp.Ⅱ). And also

when aliline intercalated GO was externally oxidized by aqueous FeCl3 or (NH4)2S2O8/HCl

a polyaniline encapsulated GO composite (Comp.I) could be only obtained. But when an exfoliation/absoprtion process was used

where polyaniline was in situ polymerized in exfoliated GO suspension

Comp.Ⅱcould be obtained.Otherwise

XRD

FT-IR andDSC were used to characterize these composites.XRD measurements indicated the Ic value of comp.Ⅱ increased from 7.62nm of GO to 1.78nm

which suggests that there exists a single layer or /and bilayer of PAn chain in the GO layer.Data of FT-IR measurement indicated the co-existence of GO and Emeraldine Salt in the polymer intercalated GO

very likely accompanied by an existence of Emeraldine Base.Thermal analysis also showed that the thermal behaviors of Comp.Ⅱwere different from those of Comp.I. And contrast to pristine GO

these two composites had a higher electrical conductivity σ

but Comp.Ⅱhad a much higherσ value than Comp.I. due to the synergies of polyaniline and graphite oxide in Comp.Ⅱ

especially the chemically reduced Comp. Ⅱand the reduced Comp.Ⅱwas 1.45×10-3S/cm and 3.73×10-2S/cm

respectively.