On the effects of high loading of ZnO nanofiller on the structural, optical, impedance and dielectric features of PVA@ZnO nanocomposite films

PVA and PMMA nano-composites: a review on strategies, applications and future prospects

“…XRD, FTIR, and SEM of neat (or virgin) PVA film have been studied and the interpretation of the same can be had from the work of the authors of the present communication [32].…”

“…PVA-ZnO nanocomposite films were also prepared using the solution casting technique and ZnO nanoparticle filler are prepared by the starch-assisted combustion method. Muthupandeeswari et al [32] have reported the fabrication of homogenous and pore-free nanocomposite films and have proved morphology dependant dielectric properties and conductivity. SEM studies revealed that 5 wt% of ZnO particles appear with an elongated rod-like shape with a centre of symmetry, distributed within the PVA matrix [32].…”

“…Muthupandeeswari et al [32] have reported the fabrication of homogenous and pore-free nanocomposite films and have proved morphology dependant dielectric properties and conductivity. SEM studies revealed that 5 wt% of ZnO particles appear with an elongated rod-like shape with a centre of symmetry, distributed within the PVA matrix [32]. While, at 10 wt% of ZnO, the rod-like shape has swollen up and seemed like petals of a flower [32].…”

A Systematic Review on the Dielectric Response of Polyvinyl alcohol - Zinc Oxide Nanocomposites Films

“…AC conductivity of the nanocomposites was also found to follow the power law behavior and is maximum for PVA-ZnO-CuO nanocomposites. A. Muthupandeeswari et al [20] have reported the fabrication of pore-free and freestanding nanocomposites films with PVA matrix and various high loading levels (5,10 and 15 wt%) of ZnO as a filler by conventional solution casting method. The authors have reported decrease in dielectric constant value either with increase in ZnO wt% loading or with increase in frequency.…”

“…The extent of the effect depends on the weight percent (wt%) of ZnO in the polymer matrix, the measurement temperature and frequency windows. There are several reports available in the literature on the dielectric properties of this PVA-ZnO nanocomposites at different temperatures and frequencies [18][19][20][21][22][23][24][25][26][27]. In this work we have attempted to consolidate all these works and to provide a systematic roadmap towards performance improvement and optimum operating conditions.…”