Author/Authors :
Al-Reyahi, Anas Yousef Department of Physics - Faculty of Science - The Hashemite University - Zarqa, Jordan , Al-Degs, Yahya Salem Department of Chemistry - Faculty of Science - The Hashemite University - Zarqa, Jordan , Issa, Ayman Abdulla Department of Chemistry - Faculty of Science - The Hashemite University - Zarqa, Jordan , khattari, Ziad yousef Department of Physics - Faculty of Science - The Hashemite University - Zarqa, Jordan , Al Sayyed, Mohammed Abu Faculty of Science - University of Tabuk, Saudi Arabia
Abstract :
The structural properties of a natural clay sample (51% kaolinite) were tailored to suit specific
applications. H2SO4 and NaOH (1.0 M) treatment caused structural alterations and a significant release of Al ions
compared to Si ions. Chemical treatment caused structural alterations, according to XRD analysis. FTIR analysis
also indicated higher density of polar surface groups upon treatment which affected the corresponding dielectric
behavior. Dielectric measurements showed their suitability in the frequency dependent dialectical insulator
applications. Acid treated kaolinite was a promising dielectric at 10 and 1000 Hz. With appropriate mass attenuation
coefficients (μ/ρ) of 12.098-12.182 cm2/g and a high half value layer of 10 cm at 10 keV, kaolinite and other treated
forms were adequate to act shielding material.
Keywords :
Dielectric and shielding properties , Physicochemical characteristics , Acid/alkali treatment , Kaolinite
