Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Detection of Radiation Degradation of LDPE by ESR Spectroscopy

전자스핀공명을 이용한 저밀도 폴리에틸렌의 방사선 열화 검지

  • Kim Ki-Yup (Korea Atomic energy Research Institute) ;
  • Lee Chung (Korea Atomic energy Research Institute) ;
  • Ryu Boo-Hyung (Department of Safety Engineering, Dongguk University)
  • Published : 2005.03.01
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Abstract

This study has investigated radiation degradation of low density polyethylene(LDPE). Samples were irradiated up to 800kGy using a $Co^{60}\;\gamma-ray$ at a dose rate of 5kGy/hr in the presence of air atmosphere at room temperature. After irradiation, storing for 2 weeks, free radical measurement of LDPE has established by electron spin resonance(ESR). ESR measurement showed that free radical concentration(FRC) was increased with radiation dose and decreased with the time. The radical types showed alkyl, allyl, and peroxy radical with the irradiation, these changed to peroxy radical with the time.

Keywords

References

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