Influence of MnO2 Nanoparticles Addition on Structural, Optical and Dielectric Characteristics of PVA/PVP for Pressure Sensors

Abstract

Films of PVA/PVP/MnO2 nanostructures were fabricated for pressure sensors fields with lightweight, flexible and low cost compare with other sensors. The structure, dielectric and optical characteristics of PVA/PVP/MnO2 nanostructures have been studied. The results showed that the dielectric constant, dielectric loss and A.C electrical conductivity of PVA/PVP blend are enhanced with the increase in MnO2 NPs content. The dielectric constant and dielectric loss decrease while the A.C electrical conductivity increases with the increase in frequency. The optical characteristics of PVA/PVP/MnO2 nanostructures showed that the absorbance was rise with increasing of the MnO2 NPs content. The indirect energy gap of PVA/PVP blend was reduced with increase in MnO2 NPs content. The optical constants of blend are changed with the increase in MnO2 NPs content. The pressure sensor application results of PVA/PVP/MnO2 nanostructures showed that the electrical capacitance (Cp) increases with the rise in applied pressure.

Structural, Optical, and Electrical Investigations of Nd2O3-Doped PVA/PVP Polymeric Composites for Electronic and Optoelectronic Applications

“…Moreover, there are fundamental technological applications of the energy-conversion processing of polymers such as solar cells, photovoltaics, and biosensors. On the other hand, the growth in polymeric composite materials obtained from two or more polymer fluctuations suggests a variety of impressive chemical and physical properties [ 2 ]. Therefore, long-term durability is vital to the continuous use of composite materials [ 3 ].…”

Improved Dielectric Properties of PVA/PEG/TiN Nanocomposites for Electronics Applications

“…The dielectric loss was found to be reduced as a function of frequency increase since the movement of ions considered as the main foundation of nanocomposite dielectric loss at lower frequencies. Consequently, the high dielectric loss value at lower frequency values designates the influence of ion jumping and the loss of ion movement conduction, and the loss of ion polarization [9][10][11][12][13][14]. Figures 3, 4 show the behaviours of dielectric constant and dielectric loss of PVA/PEG blend with concentration of TiN NPs respectively.…”