paniMmagnetic Film / Helyati Abu Hassan Shaari … [et al.]

Polyaniline (PANi) are of interest conducting polymers due to its ease of synthesis at low cost using simple equipment together with its good conductivity. However, most conducting polymers exhibited poor stability, poor mechanical properties, low thermal conductance, and being amorphous which ultimately affects their performance. Thus, copolymerization of PANi with thermoplastic is one of the methods to retain conductivity of PANi but with extra added properties such as better processability and thermal stability. Therefore, this paper presents the results of the fabrication of a conducting film by copolymerization poly(methyl methacrylate) (PMMA) a thermoplastic polymer, with PANi. In this study, a series of doped PANi with different PANi ratios were copolymerized with PMMA by a free-radical copolymerization reaction to produce a conducting copolymer film. The results from characterization análisis of the film using fourier transform infrared (FTIR) spectrometer, nuclear magnetic resonance (NMR) spectroscopy, and ultraviolet-visible (UV-Vis) spectrometer are presented, which confirmed the chemical structure of both PANi and PMMA in the copolymer. Meanwhile, an evaluation using a resistivity meter found that the prepared copolymer films exhibited conductivity at around 10-7 to 10-6 S/cm, depending on the ratio of PANi incorporated with PMMA. Taking the conductivity properties into account, the electromagnetic interference (EMI) shielding effectiveness of the films has been carried out. In summary, the prepared conducting film can be further exploited to be used as an electronic magnetic shielding material in many electronic applications. The prepared conducting copolymer film for electromagnetic shielding material prepared in this study is known as paniMmagnetic film. The novelty of this research will be in the report of copolymerization PMMA with PANi using the free radical reaction method for electronic magnetic shielding applications.