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2017 Vol.49, Issue 6 Preview Page
Effect of Electron Beam Irradiation on the Manufacturing Efficiency and the Physical Properties of Carboxymethylated Cellulose Nanofibril

전자선 조사에 따른 카르복시메틸화 셀룰로오스 나노피브릴 제조의 효율 및 물성 평가

Ji Young Lee
,
Hae Min Jo1
,
Tae Ung Park1
,
Chul Hwan Kim†
,
Kyung Min Kim2
,
Joon Pyo Jeun3
이지영
,
조해민 1
,
박태웅 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. 125-131
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Abstract

Many types of cellulose nanofibrils (CNFs) can be manufactured by modifying the types of pretreatments and the mechanical treatments used in their preparation. The resulting CNFs have their own unique physical dimensions and characteristic properties, so appropriate pretreatments and mechanical treatments should be selected to obtain the desired type of CNF. In this study, we evaluated the effect of electron beam irradiation of softwood and hardwood bleached kraft pulp (SwBKP and HwBKP, respectively) on the manufacture of different types of CNFs. The BKPs were irradiated with a 50 kGy electron beam and subsequently carboxymethlyated, followed by micro-grinding. The required number and duration of grindings were then measured for the manufacture of carboxymethylated CNFs. The FT-IR spectrum and the zeta potential of the carboxymethylated CNFs were analyzed to identify the extent of carboxymethlyation, and the viscosity and particle size were then determined. Electron beam irradiation of SwBKP and HwBKP increased the number of carboxylic acids on the CNFs and significantly decreased the required number and duration of micro-grindings. This indicates that electron beam irradiation improves the oxidation and fibrillation of SwBKP and HwBKP. Therefore, electron beam irradiation of cellulosic fibers is concluded to improve the efficiency of the manufacturing process for the fabrication of carboxymethylated CNFs.

Keywords
Electron beam irradiation
cellulose nanofibril
bleached kraft pulp
carboxymethylation
micro-grinding
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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 :125-131
  • Received Date : 2017-12-09
  • Revised Date : 2017-12-21
  • Accepted Date : 2017-12-22
  • DOI :https://doi.org/10.7584/JKTAPPI.2017.12.49.6.125
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