Journal of Radiation Industry (방사선산업학회지)

Korean Society of Radiation Industry (한국방사선산업학회)
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Effect of Storage Conditions on Graft of Polypropylene Non-woven Fabric Induced by Electron Beam

전자선 조사된 폴리프로필렌 부직포의 그라프트에 있어 보관조건이 미치는 영향

  • Lee, Jin Young (Radiation Research Division for Industry and Environment, Korea Atomic Energy Research Institute) ;
  • Jeun, Joon-Pyo (Radiation Research Division for Industry and Environment, Korea Atomic Energy Research Institute) ;
  • Kang, Phil-Hyun (Radiation Research Division for Industry and Environment, Korea Atomic Energy Research Institute)
  • 이진영 (한국원자력연구원 방사선공업환경연구부) ;
  • 전준표 (한국원자력연구원 방사선공업환경연구부) ;
  • 강필현 (한국원자력연구원 방사선공업환경연구부)
  • Received : 2015.05.19
  • Accepted : 2015.05.28
  • Published : 2015.06.30

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Abstract

In this study, we fabricated effect of storage conditions on graft of polypropylene (PP) non-woven fabric induced by electron beam. The electron beam irradiations on PP non-woven fabric were carried out over a range of irradiation doses from 25 to 100 kGy to make free radicals on fabric surface. The radical measurement was established by electron spin resonance (ESR) for confirming the changes of the alkyl radical and peroxy radical according to effect of storage time, storage temperature and atmosphere. It was observed that the free radicals were increased with irradiation dose and decreased with storage time due to the continuous oxidation. However, the radical extinction was significantly delayed due to reduced mobility of radicals at extremely low temperature. The degree of graft based on the analysis of ESR was investigated. The conditions of graft reaction were set at a temperature: $60^{\circ}C$, reaction time: 6 hours and styrene monomer concentration: 20 wt%.

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