Polymer nanocomposites comprising PVA matrix and AgGaO2 nanofillers: Probing the effect of intercalation on optical and dielectric response for optoelectronic applications

T E Somesh,L R Shivakumar,M A Sangamesh,T Demappa,Siddaramaiah Siddaramaiah

doi:10.17485/ijst/v14i31.1614

Abstract

Objectives: Synthesis of hybrid nanoparticles (NPs) and intercalation of as prepared NPs inside polymer matrix to fabricate polymer nanocomposites (NC) and evaluate the optoelectronic properties. Method: A simple, time consuming solution combustion method was used to synthesize silver doped gallium oxide (AgGaO2) NPs. The solution casting process was employed to prepare NC films of poly(vinyl alcohol) (PVA) with the inclusion of AgGaO2 NPs as nanofiller. Finding: The analytical technique such as Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy and differential scanning calorimetry analyses were used to analyze the PVA/AgGaO2 NC films. The findings of various characterization approaches showed that the morphological, structural and thermal characteristics of PVA/AgGaO2 NC films had improved, as well as confirms the existence of AgGaO2 NPs in the PVA matrix. Furthermore, the dielectric characteristics of the PVA/AgGaO2 NC films were studied using an LCR meter at various frequencies (50 Hz–1 MHz). With intercalating four different wt% of AgGaO2 NPs content as 0.5, 1, 2 and 4 wt% the dielectric constant and dielectric loss of NC films with 4 wt % AgGaO2 NPs incorporated were 112.1 and 51.5 respectively. Novelty: This improvement in dielectric characteristics revealed the uniform distribution and effective interaction of AgGaO2 NPs with the active site of PVA chains. The preceding findings demonstrated that the obtained PVA NCs were promising materials for flexible energy storage and UV-shielding applications. Keywords: Hybrid metal oxides; Dielectric constant and dielectric loss; AC conductivity; Optical energy band gap

Highlights

The polymer nanocomposites (PNCs) have received a lot of interest because of the unusual characteristics that these materials may achieve demonstration great potential applications in the arenas such as energy storage and optoelectronic applications
The Fourier-transform infrared (FTIR) data indicate that AgGaO2 NPs have been successfully integrated into the Poly(vinyl alcohol) (PVA) matrix, and that PVA and AgGaO2 NPs have great compatibility, allowing for the development of homogenous PVA/AgGaO2 nanocomposites
As-prepared AgGaO2 NP was successfully incorporated into a polymer chain utilizing a simple and environmental friendly solution casting process to fabrication of PVA/AgGaO2 nanocomposite films

Summary

Introduction

The PNCs have received a lot of interest because of the unusual characteristics that these materials may achieve demonstration great potential applications in the arenas such as energy storage and optoelectronic applications. AgGaO2 NPs were utilized as nanofillers in the production of PNCs. Many techniques exist for producing metal-oxide NPs, including mechanochemical [15], co-precipitation method [16], microwave hydrothermal [17], microwave aided solvothermal [18], sol-gel [19], and chemical precipitation [20]. Many techniques exist for producing metal-oxide NPs, including mechanochemical [15], co-precipitation method [16], microwave hydrothermal [17], microwave aided solvothermal [18], sol-gel [19], and chemical precipitation [20] Many of these approaches entail the use of hazardous chemicals, energy and time consuming are not cost-effective. The dielectric characteristics of PVA/AgGaO2 NC films were investigated

Objectives

Results

Conclusion