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Radiation Stability of Epoxy-Based Gamma Shielding Material

  • Shailesh JoshiEmail author
  • V. Snehalatha
  • K. Sivasubramanian
  • D. Ponraju
  • V. Jayaraman
  • B. Venkatraman
Article
  • 11 Downloads

Abstract

A comprehensive investigation on the effect of gamma radiation on epoxy-lead oxide composites has been carried out highlighting upon the chemical structure, thermal stability, mechanical stability, surface morphology and gamma attenuation properties. FTIR analysis evidenced the irradiation effect leading to the formation of ketones and amides due to chain scission of the epoxy polymer backbone. Surface damages were observed at high gamma dose in optical micrographs which was controlled by lead oxide. The decrease in thermal stability and activation energy with gamma dose was observed in TGA analysis. Nanoindentation studies demonstrated the decreases in surface hardness and modulus at a higher dose. However, the attenuation properties and XRD spectrum of the composites remain unchanged upon 1000 kGy gamma radiation dose.

Keywords

attenuation properties epoxy composites gamma radiation radiation stability 

Notes

Acknowledgments

The authors would like to thank Dr. Ch. Kishan Singh, Surface and Nano Science Division, IGCAR for optical microscope analysis. Authors acknowledge Mr. Afijith Nair, Material Chemistry Division, IGCAR for x-ray diffraction studies. The authors are thankful to Dr. Sarita Tripathi, Fuel Chemistry Division, Dr. R. Venkatesan, Head Radiological and Environmental Safety Division and Dr. R. Baskaran, Associate Director, Radiological and Environmental Safety Group, IGCAR for their valuable suggestions.

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© ASM International 2019

Authors and Affiliations

  1. 1.Radiological and Environmental Safety Division, Safety Quality and Resource Management GroupIndira Gandhi Centre for Atomic ResearchKalpakkamIndia
  2. 2.Safety Engineering DivisionIndira Gandhi Centre for Atomic ResearchKalpakkamIndia
  3. 3.Materials Chemistry DivisionIndira Gandhi Centre for Atomic ResearchKalpakkamIndia
  4. 4.Homi Bhabha National InstituteIndira Gandhi Centre for Atomic ResearchKalpakkamIndia

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