Optical properties of PVP/ZnO composite thin films
Journal Title: Journal of Achievements in Materials and Manufacturing Engineering - Year 2017, Vol 1, Issue 82
Abstract
Purpose: The aim of the work was the preparation of thin composite layers from PVP polymer doped by ZnO nanoparticles using the spin coating method and the analysis of the applied reinforcing phase on the morphology and optical properties of obtained composites. Design/methodology/approach: To analyse the morphology of thin coatings a technique of surface topography imaging using the atomic force microscopy (AFM) was applied. Analysis of the optical properties was conducted using absorbance spectrum in function of wavelength for all produced thin coatings using UV-Vis spectroscopy. Findings: AFM results show that mass concentration of ZnO nanoparticles of 10% in a solution of PVP/EtOH polymers has a meaningful influence on the morphology of the surface of the PVP/ZnO composite coatings. Using obtained absorbance spectra, the width of the band gap of the manufactured composite coatings were determined which were compared with a band gap values of pure polymer and used reinforcing phase. Practical implications: The analysis of the values of the energy band gap of the manufactured materials showed that both for pure polymer and composite coatings values of energy band gap are similar approx. 4 eV at the same time decrease the degree of absorption of electromagnetic radiation caused by the increasing concentration of the reinforcing phase, which indicates the broad possibilities of application of this type of the material.
Authors and Affiliations
T. Tański, W. Matysiak
The significance of the nanostructural components on the properties of the nanoengineering materials
Purpose: In the paper, the own original achievements and a mature view of the current development of advanced nanotechnology materials are presented. Design/methodology/approach: The paper should be treated as an auto-re...
Enhancing the reconfigurability of special purpose machine tools using mechanical module interfaces
Purpose: The purpose of this paper is to introduce a solution that can enhance the reconfigurability of special purpose machines (SPMs). This is because SPMs can be used in different configurations and the reconfiguring...
Properties of polylactide, obtained from lactic acid in the process of lactic fermentation of lactose in whey post production (waste)
Purpose: This publication provides a description of RDC Glokor’s own research into the effectiveness of the lactic fermentation process of lactose, lactic acid concentration and polylactide (PLA) production by ring-openi...
Vacuum Shroud (VS) for production of clean steel in tundish
Purpose: Ladle to tundish melt transfer is paramount importance over the last three decades to controlling the cleanliness of high value steel. Tundish is an important buffer between ladle and...
Microstructure and strengthening model of Al-3%Mg alloy in a heat treated state subjected to ECAP process
Purpose: The aim of this paper is to investigate the microstructure evolution of a heat treated Al-3%Mg aluminium alloy subjected to the ECAP (equal channel angular pressing process). Design/methodology/approach: Commerc...