Abstract
In the present work, pure gold nanoparticles (AuNPs) were synthesis by pulsed laser ablation technique using Nd:YAG as a source of laser. Then, the prepared AuNPs was used with low concentrations to synthesis nanocomposite films by adding it to chitosan/polyvinyl alcohol (Cs/PVA) blend using the casting method. All peaks of pure AuNPs were recorded by X-ray diffraction with face center cubic (FCC) structure. No peaks of AuNPs were found at low concentrations in the doped nanocomposites because of the complete degradation of AuNPs within Cs/PVA matrix. The intensity of some IR bands was changed due to the chemical interaction between the components. The broad band at 3350 cm−1 was decreased due to the intermolecular interaction. Dielectric constant and dielectric loss were decreased as an increase in the frequency and temperature. The increases of direct conductivity (σdc) imply that the free charge density or of the charge mobility that results. The AuNPs addition assists the charge transfer complex (CTCs) formation in which charge transportation occurs by coulomb forces and electric field. The Cole-Cole plot shows semicircles that supports the relaxation processes were a non‐ Debye method.
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