Abstract
Towards development of lung tissue substitute used in the calibration of lung counters, seven sets of polyurethane (PU) foam were synthesized exhibiting a density range of 0.14–0.42 g/cm3 by varying the quantity of foaming agent (water) in the formulation. Foam sets were characterized by Fourier transform infrared spectroscopy, elemental analysis and thermo gravimetric analysis. Effect of density on the properties of PU foam is investigated. In addition, attenuation behavior of synthesized material for low energy (<100 keV) gamma rays was checked by using 241Am & 133Ba sources and planar high purity germanium detector. Moreover, the linear and mass attenuation coefficients of all sets were calculated and were found to be in agreement to the reported values.
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Acknowledgements
The authors would like to thank Dr. Arup Dasgupta & Mr. K G Raghavendra, Structural & Analytical Microscopy Section, Physical Metallurgy Division, Indira Gandhi Centre for Atomic Research, Kalpakkam & UGC-DAE-CSR, Kalpakkam for SEM analysis. The authors are thankful to Mr. H. Krishnan, Mr. B. N. Mohanty, Mr. Ajay Rawat & Ms. Ramani Yuvraj, from Radiological Safety Division, IGCAR for their help during experiments and technical discussion.
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Joshi, S., Brahmaji Rao, J.S., Sivasubramanian, K. et al. Lung tissue substitute: synthesis, characterization and attenuation studies for low energy photons. J Polym Res 24, 78 (2017). https://doi.org/10.1007/s10965-017-1236-1
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DOI: https://doi.org/10.1007/s10965-017-1236-1