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2017 Vol.49, Issue 6 Preview Page
Evaluation of Grinding Efficiency for the Preparation of Cellulose Nanofibril Treated by Electron Beam Irradiation

전자선 조사에 따른 셀룰로오스 나노피브릴 제조과정에서 마이크로 그라인딩 효율 평가

Ji Young Lee
,
Tae Ung Park1
,
Hae Min Jo1
,
Chul Hwan Kim†
,
Kyung Min Kim2
,
Joon Pyo Jeun3
이지영
,
박태웅 1
,
조해민 1
,
김철환 †
,
김경민 2
,
전준표 3
Department of Environmental Materials Science/IALS, Gyeongsang National University, Jinju, 52828
1Department of Forest Products, Gyeongsang National University, Jinju, 52828
2Department of Environmental Materials Science, Gyeongsang National University, Jinju, 52828
3Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, 56212
경상대학교 환경재료과학과/농업생명과학연구원
1경상대학교 임산공학과
2경상대학교 환경재료과학과
3한국원자력연구원 첨단방사선연구소
†Corresponding author: E-Mail: jameskim@gnu.ac.kr
30 December 2017. pp. 118-124
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Abstract

This study investigated the effect of electron beam irradiation on the grinding efficiency of softwood and hardwood bleached kraft pulp (SwBKP and HwBKP, respectively) for the preparation of cellulose nanofibrils (CNFs). The pulps were irradiated with a 50 kGy electron beam and subsequently refined, followed by micro-grinding. During the microgrinding, the grinding efficiency was evaluated by measuring the required number and the time of grinding. The fiber widths of the CNFs were measured by transmission electron microscopy and their properties, including low-shear viscosity, particle size, crystallinity, were also analyzed. When the electron beam irradiated the BKPs, the number and the time of grinding decreased significantly. The effect of electron beam irradiation on the grinding efficiency was greater for SwBKP than for HwBKP. All of the CNFs showed fiber widths smaller than 100 nm, indicating that they were ground to nano-scale by the irradiation and the micro-grinding. The viscosity increased, and the particle size and the crystallinity of the CNFs decreased as the number of micro-grindings increased. irradiated CNFs were not statistically significant. Therefore, electron beam irradiation is concluded to improve the grinding efficiency of BKPs for the preparation of CNFs.

Keywords
Electron beam irradiation
cellulose nanofibril
bleached kraft pulp
beating
micro-grinding
efficiency
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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 : 49
  • No :6
  • Pages :118-124
  • Received Date : 2017-12-08
  • Revised Date : 2017-12-21
  • Accepted Date : 2017-12-22
  • DOI :https://doi.org/10.7584/JKTAPPI.2017.12.49.6.118
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