Variation of Ammonium Persulfate Concentration Determines Particle Morphology and Electrical Conductivity in HCl Doped Polyaniline
IOP Conference Series: Materials Science and Engineering
Volume 599, Issue 1, 4 September 2019, Article number 012002
Seminar Nasional Material 2018, SNM 2018; Institut Teknologi BandungBandung; Indonesia; 16 November 2018 through 17 November 2018; Code 152415

Polyaniline (PANI) is one of conducting polymers which is widely used in various applications especially energy field, like solar cells and batteries. PANI emeraldine salt (PANI ES) is the only type of conducting PANI which can be easily synthesized using a direct mixing method in an oxidizing solution. Ammonium persulfate (APS) is one example of a strong oxidizing agent which is often used in PANI synthesis. The APS concentrations used in this study ranged from 0.1 to 1 M. Infrared and Raman spectroscopy shows that the addition of APS concentrations above 0.5 M produces the non-conducting fully oxidized PANI and phenazine species. Scanning electron microscope (SEM) showed morphological changes of PANI ES from nanofiber (diameter 80 – 110 nm) to granules (diameter 20 – 70 nm) as APS concentration increases. Based on Electrochemical impedance spectroscopy (EIS), conductivity of PANI increases as APS concentration increases with maximum conductivity of 0.36 S cm-1 at 0.5 M.
Researcher: Dr. Achmad Rochliadi, Dr. Veinardi Suendo