Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Effect of Electron Beam Irradiation on the Properties of Softwood Unbleached Kraft Pulp

전자선 전처리에 따른 침엽수 미표백 크라프트 펄프의 특성평가

  • Kim, Eun Hea (Dept. of Forest Products, Gyeongsang National University) ;
  • Lee, Ji Young (Dept. of Environmental Materials Science/IALS, Gyeongsang National University) ;
  • Jeun, Joon Pyo (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kim, Sun Young (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kim, Chul Hwan (Dept. of Environmental Materials Science/IALS, Gyeongsang National University) ;
  • Park, Jong Hye (Dept. of Forest Products, Gyeongsang National University)
  • 김은혜 (경상대학교 임산공학과) ;
  • 이지영 (경상대학교 환경재료과학과/농업생명과학연구원) ;
  • 전준표 (한국원자력연구원 첨단방사선연구소) ;
  • 김선영 (한국원자력연구원 첨단방사선연구소) ;
  • 김철환 (경상대학교 환경재료과학과/농업생명과학연구원) ;
  • 박종혜 (경상대학교 임산공학과)
  • Received : 2015.09.09
  • Accepted : 2015.10.03
  • Published : 2015.10.30
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Abstract

Electron beam irradiation is also an eco-friendly treatment compared to other physical and chemical treatments. In this study, we attempted to evaluate the possibilities of energy savings by applying electron beam irradiation to the refining process. After softwood unbleached kraft pulp (UKP) was irradiated with electron beams at 50 and 100 kGy, it was beaten in a laboratory beater, and then its freeness and fiber properties were analyzed. The physical properties of their fiber handsheet were also and measured. As the irradiation dose of the electron beam and the beating time increased, lower freeness and fiber lengths of the UKP were observed. Handsheets made from UKP that was irradiated by electron beam and beaten showed a reciprocal relationship with the irradiation dose of the electron beam, in particular, the strength of the handsheets decreased dramatically at 100 kGy of irradiation. Therefore, it was confirmed that electron beam irradiation is effective in reducing the beating time or beating energy. But the irradiation dose must be controlled under 50 kGy to minimize the loss of paper strength.

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References

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