Characterizations Of ZnO Reinforced Poly (3-Hydroxybutyrate) Composites For Electronic Applications
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Date
2018-01
Authors
Janakiraman, Vishnu Chandar
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
In this work, pure polymer [P(3HB) homopolymer, P(3HB-co-10 mol% 3HHx) copolymer and P(3HB-co-15 mol% 3HHx) copolymer] and its nanocomposite [P(3HB)/ZnO, P(3HB-co-10 mol% 3HHx)/ZnO and P(3HB-co-15 mol% 3HHx)/ZnO] films with seven different concentration of ZnO NPs ranging from 0% to 30% were fabricated using solution casting method. The effect of ZnO NPs on different properties of pure polymer and its nanocomposite films were studied to find its potential applications in electronics field. The XRD analysis clearly confirms the presence of polymer [P(3HB) homopolymer, P(3HB-co-10 mol% 3HHx) copolymer, P(3HB-co-15 mol% 3HHx) copolymer] and ZnO nanoparticles (NPs). AFM and FESEM analysis confirmed the smoother surface of P(3HB-co-15 mol% 3HHx)/ZnO nanocomposites than P(3HB-co-10 mol% 3HHx)/ZnO and P(3HB)/ZnO nanocomposites which clearly indicated the possibility of high thermal conductivity. DSC analysis confirmed the high melting temperature of P(3HB)/ZnO nanocomposites (~ 172 ˚C) which decreased with increasing concentration of 3HHx monomer concentration i.e. P(3HB-co-10 mol% 3HHx)/ZnO (~ 164 ˚C) and P(3HB-co-15 mol% 3HHx)/ZnO (~ 159 ˚C) nanocomposites. TGA analysis showed good thermal stability behavior for all prepared nanocomposites by exhibiting increased final degradation temperature (Tf). As expected P(3HB-co-15 mol% 3HHx)/ZnO nanocomposites exhibited higher thermal conductivity (10 to 30% improvement) than other two nanocomposites and indicated the faster thermal equilibrium achievement of the prepared nanocomposites. P(3HB)/ZnO nanocomposite showed high dielectric constant (~ 2.66 – 5.19) with loss tangent < 0.02 than other two composites which is greater than or equal to FR4 substrate. UV-Vis analysis showed strong absorption in the UV region for nanocomposites compared to pure polymer.
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Keywords
Characterizations of ZnO reinforced poly (3-hydroxubutyrate) composites , for electronic applications