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2022 Vol.54, Issue 6 Preview Page
Changes in the Physical Properties of the Cotton Linter Paper Irradiated by a Gamma Ray and Electron Beam

고선량의 감마선과 전자선이 조사된 cotton linter 종이의 물리적 특성 변화 비교

Yujin Hwang1
,
Myung-Joon Jeong2†
,
Hae-Jun Park3
황유진 1
,
정명준 2†
,
박해준 3
1Department of Wood Science and Technology, Jeonbuk National University
2Department of Wood Science and Technology, Jeonbuk National University
3Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute
1전북대학교 목재응용과학과, 학생
2전북대학교 목재응용과학과, 교수
3한국원자력연구원 첨단방사선 연구소, 책임 연구원
†Corresponding author: E-Mail: mjeong@jbnu.ac.kr (Address: Department of Wood Science and Technology, Jeonbuk National University, Republic of Korea)
30 December 2022. pp. 51-59
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Abstract

The effects of gamma ray and electron beam irradiation on paper disinfection were evaluated. The paper was irradiated with 10-100 kGy gamma rays and electron beams which were higher than the recommended dose for paper disinfection. After irradiation, the mechanical properties and color of the paper and the cellulose chain scission rate were evaluated. In the case of paper strength, it decreased after 25 kGy irradiation, whereas the discoloration of paper appeared after 10 kGy irradiation. It cannot confirm the effect on paper only with changes in mechanical strength and color in the recommended range of 0.5-10 kGy for actual paper disinfection treatment. On the other hand, even with 10 kGy irradiation, the degree of polymerization of cellulose paper was reduced by ~50%. Cotton linter paper with a degree of polymerization of about 2,000 was predicted to decrease by about 7% after being irradiated with a 1 kGy gamma ray and electron beam. To evaluate the irradiation effect on paper, it is therefore more reasonable to evaluate the degree of polymerization rather than the strength and color of the paper.

Keywords
Radiation treatment
discoloration
the rate of cellulose chain scission
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Information
  • Publisher :Korea Technical Association of The Pulp and Paper Industry
  • Publisher(Ko) :한국펄프종이공학회
  • Journal Title :Journal of Korea TAPPI
  • Journal Title(Ko) :펄프종이기술
  • Volume : 54
  • No :6
  • Pages :51-59
  • Received Date : 2022-11-24
  • Revised Date : 2022-12-13
  • Accepted Date : 2022-12-15
  • DOI :https://doi.org/10.7584/JKTAPPI.2022.12.54.6.51
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