Development of Conductive Graphene/Polyaniline Nanocomposites Produced by In-situ Polymerization and Solvent Blending Method
Muhammad Firdaus Shafee, Syazana Ahmad Zubir and Mariatti Mustapha*
Polyaniline (PANI) is one of the most promising conducting polymers due to the excellent environmental stability, good electrical properties and easily prepared. Addition of graphene filler in the PANI matrix was found to increase the conductivity of PANI nanocomposites. Generally, conductive nanocomposites can be produced using three types of methods, including in-situ polymerization, solvent blending and melt blending. The present paper aims to study and compare the properties of conductive nanocomposites graphene/PANI fabricated using two methods which are in-situ polymerization and solvent blending methods. Electrical conductivity, thermogravimetric analysis (TGA) and field emission scanning electron microscopy (FESEM) were used to analyze the samples. It is found that in-situ polymerization method is more suitable to be used to produce graphene/PANI nanocomposites samples where better dispersion of graphene fillers and smaller diameter size of PANI fibers were produced by this method compared to that of solvent blending method. Sample produced by in-situ polymerization method showed 88 % higher electrical conductivity and better thermal stability compared to that of solvent blending method.