SYNTHESIS AND CHARACTERIZATION OF PVA/AGNW COMPOSITES

Ramya. P, Priya L

Abstract: The influence of silver nanowires and (AgNWs) on the structure, morphology and electrical properties of Polyvinyl Alcohol (PVA) has been studied in the present work. PVA/AgNW samples have been prepared by dissolving PVA in AgNW solution and the thin films has been prepared by solution casting method. Structural and morphological properties have been studied from XRD and FESEM. AgNWs affected the signature peak of PVA at 20o by breaking the hydrogen bonding and OH groups. All the fcc peaks of Ag are retained at same positions in all the composites. FESEM of the composites shows that AgNWs are well embedded in the PVA matrix. UV-Vis spectroscopy shows that the optical band gap of the composites is less than that of the PVA. DC conductivity results show that the conductivity of the composites has increased by nearly four orders than pure PVA. Best are obtained only till 15% of AgNW doping concentration. After 15% AgNWs got aggregated in the matrix and conductivity decreased in the composite containing 20% AgNWs.

Keywords: morphology , electrical properties

DOI: https://doi.org/10.15623/ijret.2016.0516068