A Bioinspired Approach to Fabricate Reduced Graphene Oxide Filled
Poly (vinyl alcohol) Bionanocomposite for Electrical Applications
Bhasha Sharma*, Shreya Sharma, Shashank Shekhar
Department of Chemistry
Netaji Subhas University of Technology, University of Delhi, India
Abstract: Biopolymer based nanocomposites are of prime importance in the present scenario due to their environmental friendly impact on various applications. Nanofiller incorporated Poly (vinyl alcohol) thin films have been fabricated by solution casting technique. Graphene Oxide was prepared by modified Hummer’s method which was further chemically reduced by using hydrazine hydrate. Dispersion of graphene oxide into PVA matrix is facilitated by hydrogen bonding due to the presence of hydroxyl groups. The composite samples were prepared using a range of wt% of reduced graphene oxide content respectively and water is used as a processing solvent. The results showed a significant improvement of mechanical strength on addition of small amount of reduced graphene oxide as compared to neat PVA. SEM analysis revealed that the nanofiller particles are uniformly distributed throughout the surface. These simple illustrations portrays that at very low inclusion of RGO wt% into PVA matrix could improve mechanical strength & electrical conductivity. Degree of crystallinity and melting enthalpy of PVA – RGO nanocomposites were investigated by thermal analysis.