Study on the Optical Properties of PVA /PEG Doped with Sodium Fluoride Salt Polymer Blend Electrolyte Films | Chapter 36 | Innovative Solutions: A Systematic Approach towards Sustainable Future

Polymers when doped with metal salts give complexes which are useful for development of the advanced high-energy electrochemical devices such as high-energy density rechargeable batteries and energy storage devices. The materials used in this work were procured from Sigma Aldrich company having 99.99% purity and are used without any further purification throughout the research experiment. In the present work, solid polymer blend electrolyte films of PVA (Polyvinyl Alcohol) and PEG (Polyethylene Glycol) doped with different weight percent ratios of NaF (Sodium Fluoride) were prepared by the solution casting method. The effect of NaF concentration on the optical properties of (PVA/PVP-NaF) films has been investigated using a UV-Vis Spectrophotometer in the wavelength range (200-800 nm). The optical constants like absorption spectra, transmission spectra, refractive index, extinction coefficient, real and imaginary parts of the dielectric constant and optical band gaps are investigated. It was found that the optical energy band gap is decreased upon the increase in NaF salt concentration which is contrary to the variation of conductance. The experimental results show that the optical constants showed clear changes with increasing the doping concentrations. The optical constants such as extinction coefficient, refractive index, and real and imaginary dielectric constants are found to depend on the NaF concentration in the PVA/PEG blended polymer matrix. These physical aspects will contribute to producing a new material that might potentially be used as an alternative or substitute material for many other applications.

 

Author (s) Details

 

Mohammed Irfan
Department of P.G. Studies in Physics, Government Science College (VTU-RRC), Chitradurga-577501, Karnataka, India.

 

Razikha Banu S
Department of P.G. Studies in Physics, Government Science College (VTU-RRC), Chitradurga-577501, Karnataka, India.

 

J. Shilpa
Department of Physics, Navkis College of Engineering, KIADB Thimmanahalli Industrial Area, Kandali – 573217, Hassan, Karnataka, India.

A. Manjunath
Department of P.G. Studies in Physics, Government Science College (VTU-RRC), Chitradurga-577501, Karnataka, India and Department of Physics, Navkis College of Engineering, KIADB Thimmanahalli Industrial Area, Kandali – 573217, Hassan, Karnataka, India.

 

S. S. Mahesh
Department of Physics, Acharya Institute of Technology, Soladevanahalli, Bangalore-560107, Karnataka, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/mono/978-93-49238-47-3/CH36

Impact of Low Concentrations of TiO2 on the Physical and Optical Characteristics in Borobismuthate Glasses | Chapter 5 | Current Perspective to Physical Science Research Vol. 4

 A set of blinkers was preapred using the melt quenching method with arrangement 20 BaO- 10Bi2O3-(70-x) B2O3 – x TiO2 (x=0, 0.2, 0.4, 0.6, 0.8 and 1 mol%). X-ray Diffraction (XRD) investigations confirmed that all samples in this place batch exhibited an nebulous structure. The limits, including density, something that chops volume, and oxygen packing bulk (OPD), were calculated. It was noticed that density ranged from 3.978 to 3.843, and the something that chops volume showed matching changes with differences in density, which were assign to the creation and alteration of Non-Bridging Oxygen (NBO) sites. Optical incorporation investigations were completed activity on a series of glass samples. It was noticed that the optical bandgap energy (Eopt) raised with the influx of titanium dioxide, but decreased as the concentration of TiO2 resumed to rise. The metallization criterion (M) showed an beginning increase upon the addition of TiO2, but afterward remained relatively perpetual as the TiO2 content increased. This suggests that these cheaters may exhibit traits of amorphous semiconductors. Additionally, various added optical parameters, to a degree refractive index (n), absorption cooperative (α), extinction coefficient (K), ocular conductivity (σop), optical polarizability (αo), and ocular basicity (∧th), were evaluated for all the samples and resolved with respect to wavelength.

Author(s) Details:

Pavan Kumar Pothuganti,
Department of Humanities and Sciences (Physics), VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, Telangana-500 090, India.

Ashok Bhogi,
Department of Humanities and Sciences (Physics), VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, Telangana-500 090, India.

Muralidhara Reddy Kalimi,
Department of EIE, R.G.M. College of Engineering and Technology, Nandyal, Andhra Pradesh-518 501, India.

Padamasuvarna Reniguntla,
Department of Physics, JNTUA-College of Engineering, Ananthapuramu, Andhra Pradesh- 515 002, India.

Please see the link here: https://stm.bookpi.org/CPPSR-V4/article/view/12545