Novel (PMMA-ZrO2-Ag) Nanocomposites: Structural, Electronic, Optical Properties as Antibacterial for Dental Industries

Abstract

Poly-methylmethacrylate (PMMA)was widely accepted material in dental and medical fieldsbecause of the excellent biocompatibility and easy fabrication. In current paper, study the geometrical parameters, electronic and optical properties of the (PMMA-ZrO 2 -Ag)nanostructures. The electronic properties include electrochemical hardness and electronic softness while the optical properties include absorbance, transmittance, absorption coefficient, extinction coefficient, refractive index, real and imaginary parts of dielectric constants and optical conductivity. The properties calculated by using Gaussian 0.9 program with Gaussian View 0.5 using density function theory (DFT) with local spin density approximation B3LYP level, 6-31G and STO-3D basis sets. The results showed that the addition of Ag nanoparticles lead to decrease the chemical hardness and increase in the softness. The optical properties for (PMMA-ZrO 2 -Ag) nanocomposites showed that the absorbance, absorption coefficient, extinction coefficient, refractive index, real and imaginary parts of dielectric constants and optical conductivity of (PMMA-Al 2 O 3 ) nanocomposites increase while the transmittance and energy band gap decrease with increase in Ag nanoparticles concentrations. The antibacterial results showed that the (PMMA-ZrO 2 -Ag) nanocomposites have good antibacterial for positive and negative gram organisms.

Antibacterial Activity of Silver Nanoparticles Synthesized Using Tyrosine as Capping and Reducing Agent

“…Colloidal silver nanoparticles (AgNPs) will be used to test antibacterial activity against gram-positive bacteria, Bacillus subtilis and gram-negative bacteria, Escherichia coli. There are some application of nano particles in other areas [19][20][21]…”

Structural and Optical Properties of (PMMA/ZrO/Ag) New Nanocomposites for Optoelectronics and UV Detectors Applications

“…It is noticed from figure, the transmittance decreased with the increasing of the concentration for Ag nanoparticles. This is because of the agglomeration of nanoparticles with increasing concentration and increase of the number of charge carriers [82][83][84][85][86].…”

“…where  is the absorption coefficient for higher photon energies. The simplified general equation is [65] ()…”

Studies on Characteristics of Polymer/Ceramics Nanocomposites for Biomedical and Industrial Applications

“…[22]. Nanocomposites and composite materials have huge applications in the different biomedical, environmental and industrial fields like energy storage and release [23][24][25][26], antibacterial agents [27][28][29][30][31][32][33][34][35], humidity sensors [36][37][38][39], bioenvironmental and radiation shielding [40][41][42][43][44][45][46]. The adding of micro-or nanoparticles of biomaterial to polymer or polymer blend can improve the properties of polymer matrix like electronic properties [47][48][49][50][51][52], optical properties , electrical and dielectric properties [76][77][78][79][80][81][82][83][84][85][86][87][88][89].…”