| Institution: | 1. Embrapa Instrumentation - National Nanotechnology Laboratory for Agribusiness, São Carlos, SP, Brazil
Graduated Program of Biotechnology - Federal University de São Carlos (UFSCar), SP, Brazil;2. Graduated Program of Biotechnology - Federal University de São Carlos (UFSCar), SP, Brazil;3. Embrapa Instrumentation - National Nanotechnology Laboratory for Agribusiness, São Carlos, SP, Brazil |
| Abstract: | Summary: This work evaluated the influence of the synthesis temperature on the polyaniline (PANI) properties obtained by in-situ polymerization onto a poly (terephthalate) (PET) substrate. The residual mass of these syntheses was dried under vacuum, obtaining PANI powders for each temperature investigated. PANI/PET thin films and PANI powders were characterized by atomic force microscopy (AFM), field emission scanning electron microscopy (FEG-SEM), X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-Vis) and four-point probe techniques. The UV-Vis results showed that the synthesized PANI presents the emeraldine oxidation state. By means of XRD technique, it was possible to verify that the PANI powders present crystalline form. The AFM and FEG-SEM techniques showed that the decrease in PANI/PET and PANI powders electrical conductivity with increasing of the synthesis temperature is related to the polymeric aggregates morphology. |
