Title: Conductive Inks with 3D Conductive Networks of Polyaniline Crystals Nanofibers
Abstract: A series of Polyaniline (PANI) nanoparticles doped with citric acid were synthesized by situ polymerization.It is interesting that uniform nanofibers with the diameter of 50 nm formed under a proper mass ratio (aniline:citric acid) of 5:4, which forms 3D conductive networks.XRD patterns show the nanofibers have sharp peaks, corresponding to high crystallinity.The nanofibers were selected for preparation of PANI ink with Polyethylene Glycol (PEG, Mn = 698), Sodium Polystyrene Sulfonate (PSS, Mn = 70,000).The good electric conductivity of PANI conductive ink is 6.49 × 10 -3 S/cm, where PANI inks of Anhui University of Science and Technology university was stamped in A4 paper for good printing performance acting as electronic circuit line turning on a LED light.Moreover, the effects such as the content of citric acid and PSS on the conductivity of PANI powder and also discussed.