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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.50 [2012] >
IJPAP Vol.50(11) [November 2012] >
| Title: | Lead oxides filled isophthalic resin polymer composites for gamma radiation shielding applications |
| Authors: | Harish, V
Nagaiah, N
Kumar, H G Harish |
| Keywords: | Polymer composites
Radiation shielding
Gamma rays
Unsaturated polyesters
Attenuation |
| Issue Date: | Nov-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Particulate polymer
composites of isophthalic resin (ISO) filled with three lead oxides (PbO, PbO2
and Pb3O4) were prepared with different filler
concentrations and investigated for radiation shielding properties of gamma
rays from Ba-133, Cs-137 and Co-60 point sources. Among the three composite
combinations, ISO+PbO composites yield better density values than the other two
due to high density of the filler which contains large lead fraction and fine
dispersability in the polymer matrix. Dispersion and particle size of filler
were also studied by morphological analysis of the composites using Scanning
Electron Microscope. Attenuation coefficients were found to increase with the
increased filler content in the composites. ISO+PbO composites have found to
outperform than ISO+PbO2 and ISO+Pb3O4
composites. Excellent performance of ISO+PbO composites can be attributed to
their high lead content as well as fine filler dispersion in the polymer
matrix. Further, these ISO+PbO composites when compared to conventional
shielding materials perform as strong contenders to barite, steel and concrete
at low gamma ray energies. Even at higher gamma ray energies considered, they
perform satisfactorily and are very much comparable to steel and concrete. |
| Page(s): | 847-850 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.50(11) [November 2012]
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