Abstract
Electrochromism refers to a phenomenon where materials change their optical characteristics reversibly through the manipulation of potential biases. This research aimed to study potentiality in the selection of bioplastic type such as poly(lactic acid) (PLA) and biaxial oriented polypropylene (BOPP) coated by thermal reduced graphene oxide (TRGO) for use as an electrode of electrochromic device. TRGO is the conductive layer. It was synthesized by simple method from graphite using 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) and hydrogen peroxide (H2O2) under microwave irradiation. The formation mechanism of TRGO was characterized by Fourier transform infrared spectroscopy (FT-IR), Fourier transform Raman spectroscopy (FT-Raman) and scanning electron microscopy (SEM). In this study, using pyrrole monomer to generate electrochromic polymer and assembly with electrode for applying as electrochromic device. The electrochromic property was investigated by cyclic voltammetry (CV) and ultraviolet-visible (UV-Vis) spectrophotometry. The results show that TRGO exhibits good conductive and electrochromic devices can change color from yellow to black when applying electric current +1.2 V to -1.2 V because of oxidation and reduction of electrochromic polymer.
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