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Updated: Jan 18, 2026

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
Published on: September 19, 2020
Exploring barium-bismuth oxide nanocomposites for radiation shielding
B M Chandrika1, L Seenappa2, Holaly Chandrashekara Shastry Manjunatha3
1Department of Physics, Government College for women, Kolar 563 101, Karnataka, India; Department of Physics, St.Joseph's College (Autonomous), Affiliated To Bharathidasan University, Tiruchirappalli 620 002, TamilNadu, India.
Abstract:
textcolorred This study reports the green synthesis, characterization, and radiation shielding performance of BaO2Bi2O3 nanocomposites using Euphorbia tirucalli latex as a reducing agent. Structural analysis via PXRD confirmed distinct crystalline phases, and SEM revealed agglomerated nanoparticles below 500 nm. The UV-Vis spectra showed a wide optical bandgap of 3.075 eV. The nanocomposite achieved a high linear attenuation coefficient (1.81 cm-1 at 0.345 MeV), a radiation protection efficiency of 99.18% (at 0.511 MeV), and an effective atomic number of 52.89. It also demonstrated superior bremsstrahlung and neutron shielding compared to lead and concrete. These results establish BaO2Bi2O3 as a lead-free, eco-friendly shielding material for medical, nuclear, and industrial applications.
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