Synthesis of Polyaniline by Pulsed Plasma Polymerization Using Theta-Pinch Device

Abstract:

Polyaniline was synthesized by pulsed plasma polymerization using a theta-pinch device. The process was done using oxygen plasma at a voltage of 20 kV, a pressure of 2 Pa and a discharging current of 125 kA. The number of the plasma shots was varied from 10, 15, 20, 25, to 30 shots. This parameter significantly affected the chemical structures of the synthesized polyanilines as revealed by FTIR spectra. While all synthesized polyaniline exhibited the characteristic peaks of quinoid ring and benzenoid group, the peaks corresponding to the formation of oxygen containing groups was found when high numbers of plasma shots were employed. This also caused the difference in UV-VIS absorption of these polyanilines. The highest conductivity of polyaniline was obtained when 20 shots of oxygen plasma were used. At this condition, polyaniline had a semi-crystalline structure and the thermal decomposition temperature at 262oC.

• Periodical: Advanced Materials Research (Volumes 488-489)
• Pages: 950-954
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.488-489.950
• Online since: March 2012
• Authors: Sasikan Suwanprateep, Rattachat Mongkolnavin, Vimolvan Pimpan
• Keywords: Plasma Polymerization, Polyaniline, Pulsed Plasma, Theta-Pinch Device

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