Preparation and characterisation of Isophthalic-Bi2O3 polymer composite gamma radiation shields

被引:112
作者
Ambika, M. R. [1 ]
Nagaiah, N. [1 ]
Harish, V. [2 ]
Lokanath, N. K. [3 ]
Sridhar, M. A. [3 ]
Renukappa, N. M. [4 ]
Suman, S. K. [5 ]
机构
[1] Bangalore Univ, Dept Phys, JB Campus, Bengaluru 560056, Karnataka, India
[2] Govt First Grade Coll, Dept Phys, Shimoga 577201, Karnataka, India
[3] Univ Mysore, Dept Studies Phys, Mysuru 570006, Karnataka, India
[4] SJCE, Dept Elect & Commun, Mysuru 570006, Karnataka, India
[5] BARC, Radiat Safety Syst Div, Bombay 400085, Maharashtra, India
关键词
Thermosetting resin; Particle reinforcement; Gamma rays; Attenuation coefficient; Microstructural analysis; Thermal analysis; X-RAY; NANOCOMPOSITE;
D O I
10.1016/j.radphyschem.2016.09.022
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Bi2O3 filled Isophthalic resin based polymer composites of different weight % (0, 5, 10, 20, 30, 40, 50 & 60) were fabricated by open mould cast technique. Gamma attenuation study was carried out using NaI (Tl) gamma ray spectrometer for Cs-137. The shielding parameters such as attenuation coefficient, HVL & lambda were investigated. The distribution of the filler within the matrix was studied using Scanning Electron Microscopy. X ray diffractometer and Fourier Transform Infrared Spectroscopy were employed to study the structural changes if any. The thermal stability and mechanical strength of the composites were investigated using TGA & UTM respectively. Dielectric properties and AC conductivity were also studied using LCR meter. The composites are found to be thermally stable upto 200 degrees C. There were no such structural changes observed and all the composites show very low conductivity. The mechanical strength of the composites was found to increase upon adding the bismuth oxide with a slight decrease when the concentration of the filler exceeds 40 wt%. Attenuation results reveal that, the shielding efficiency increases with the increase of the filler wt% and are comparable to those of the conventional shielding materials. Hence, Bi2O3 filled composites can be used for gamma shielding applications.
引用
收藏
页码:351 / 358
页数:8
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