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2016 Vol.48, Issue 4 Preview Page
Evaluation of Electron Beam Irradiation as New Pretreatment for Cellulose Nanofibril Production

셀룰로오스 나노섬유 제조를 위한 전자선 전처리에 대한 연구

Ji Young Lee
,
Chul Hwan Kim†
,
Eun Hea Kim1
,
Tae Ung Park2
,
Joon Pyo Jeun3
,
Sun Young Kim3
이지영
,
김철환 †
,
김은혜 1
,
박태웅 2
,
전준표 3
,
김선영 3
Dept. of Environmental Materials Science/IALS, Gyeongsang National University, Jinju, 52828
1Dept. of Forest Products, Gyeongsang National University, Jinju, 52828
2Dept. 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
†E-mail: jameskim@gnu.ac.kr
30 August 2016. pp. 99-106
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Abstract

Many studies have reported that cellulose nanofibrils (CNFs) show high potential for use in many industries, but this material has been considered too costly for commercialization. An effective treatment is therefore needed to reduce the production costs of CNFs. This study describes the use of electron beam irradiation as a new pretreatment for the manufacture of CNFs and the effectiveness of electron beam irradiation in the refining process, which is a part of CNF production. Bleached kraft pulps were irradiated by an electron beam and subsequently refined, followed by measurement of the freeness and fiber properties. The strengths of treated pulps were identified by preparing handsheets and analyzing their strengths.

Increases in the irradiation dose of the electron beam and in the beating time decreased the freeness and fiber length of the pulps. The images acquired with an optical microscope demonstrated fibrillation of pulps. The handsheets made from the pulps irradiated by the electron beam and beaten showed lower strengths because of the reduction in the degree of polymerization and crystallinity. Therefore, electron beam irradiation is concluded to reduce the amount of electric energy needed in the manufacturing process of CNFs, but the irradiation dose of electron beam must be controlled to avoid severe deterioration of the fiber strength.

Keywords
Electron beam irradiation
cellulose nanofibril
bleached kraft pulp
pretreatment,
beating
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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 : 48
  • No :4
  • Pages :99-106
  • Received Date : 2016-08-05
  • Revised Date : 2016-08-19
  • Accepted Date : 2016-08-20
  • DOI :https://doi.org/10.7584/JKTAPPI.2016.08.48.4.99
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