Abstract
PMMA/TiO2 homogeneous thin films were deposited by using plasma jet system under normal atmospheric pressure and room temperature. PMMA/TiO2 nanocomposite thin film synthesized by plasma polymerization. Titanium oxide was mixed with Methyl Methacrylate Monomer (MMA) with specific weight ratios (1, 3 and 5 grams of TiO2 per 100 ml of MMA). Optical properties of PMMA/TiO2 nanocomposite thin films were characterized by UV-Visible absorption spectra using a double beam UV-Vis-NIR Spectrophotometer. The thin films surface morphological analysis is carried out by employing SEM. The structure analysis are achieved by X-ray diffraction. UV-Visible absorption spectra shows that the increasing the concentration of titanium oxide added to the polymer leads to shift the peak position (λmax) toward the infrared region of the electromagnetic spectrum. Also the peak width increases when the concentration of TiO2 increases. It can be controlled optical energy band gap of PMMA/TiO2 nanocomposite thin films by changing concentration of TiO2. SEM indicate a uniform distribution of titanium oxide particles in PMMA matrix. The x-ray diffraction pattern indicated that the thin films have amorphous structure.
Highlights
There are significant interest in TiO2 Nano- thin films because it has so many potential applications, in chemical sensors, biomedical material and solar cells.TiO2 are the most commonly used coatings because of their attractive properties, like good transmission in the visible and near infrared regions, good cohesion, and high constancy against mechanical scratch, and high temperatures [1,2,3].so that it used regularly as single -layer or multilayer optical coatings
A Layer of PMMA/TiO2 deposited on glass substrates with a thickness of 200, 250 and 265 nm at the concentration of TiO2 is 1, 3 and 5 gram per 100 ml of MMA, respectively
Figure note that the increase in the concentration of TiO2 lead to displace the peak position toward the infrared region of the electromagnetic spectrum
Summary
There are significant interest in TiO2 Nano- thin films because it has so many potential applications, in chemical sensors, biomedical material and solar cells.TiO2 are the most commonly used coatings because of their attractive properties, like good transmission in the visible and near infrared regions, good cohesion, and high constancy against mechanical scratch, and high temperatures [1,2,3]. TiO2 is cost effective and chemically stable, with good optical properties, thermal stability, high refractive index, and a deficiency of absorbance of visible light [4, 5]. PMMA because of its simple synthesis procedure, good environmental, thermal stability, good optical and chemical properties [8]. The plasma jet technique is used to synthesize PMMA/TiO2 nanocomposite films. The other aim is controlled optical energy band gap of PMMA/TiO2 nanocomposite thin films by altering concentration of TiO2
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