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2019 Vol.51, Issue 3 Preview Page
Fundamental Study on the Cellulose Nanofibril Manufacture from Paper Mulberry Fiber

닥나무 인피섬유의 활용을 위한 CNF 제조에 대한 기초연구

Ji Young Lee
,
Hae Min Jo1
,
Kyung Min Kim1
,
Su Ho Kim1
,
Chul Hwan Kim†
이지영
,
조해민 1
,
김경민 1
,
김수호 1
,
김철환 †
Department of Environmental Materials Science/IALS, Gyeongsang National University, Jinju, 52828
1Department of Forest Products, Gyeongsang National University, Jinju, 52828
경상대학교 환경재료과학과/농업생명과학연구원
1경상대학교 임산공학과
†Corresponding author: E-Mail: jameskim@gnu.ac.kr
30 June 2019. pp. 45-51
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Abstract

Bast fibers, such as mulberry, flax, and hemp, are more durable and stronger than lignocellulosic fibers because of their high cellulose content and high crystallinity. Although studies on pulping and fiberization of bast fibers have been undertaken, research on bast fiber industrialization is lacking. A novel grade of the product made using bast fibers should be explored to extend their application in the industry. In this study, a cellulose nanofibril (CNF) was produced using paper mulberry fibers via refining and micro-grinding processes. After micro-grinding, the fiber width, viscosity, particle size, and zeta potential of the CNF samples were measured to evaluate the CNF properties depending on the pass number of fibrillations. Both external and internal fibrillations were observed during the refining process. The fiber width and particle size of the CNFs decreased and the CNF viscosity increased as the pass number of fibrillations in the micro-grinding process increased. The fiber widths of all the CNFs were smaller than 100 nm when the pass number was 8, indicating that paper mulberry fibers could be used as a raw material for the CNF manufacture. However, compared with the CNFs made from lignocellulosic fibers, only mechanical pretreatment was not effective, and a longer fibrillation time was required for the paper mulberry CNF manufacture. Therefore, we conclude that chemical or enzymatic pretreatment is needed prior to CNF refining and micro-grinding to improve the efficiency of paper mulberry CNF manufacture.

Keywords
Paper mulberry fiber
bast fiber
cellulose nanofibril
mechanical treatment
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 : 51
  • No :3
  • Pages :45-51
  • Received Date : 2019-05-15
  • Revised Date : 2019-06-09
  • Accepted Date : 2019-06-12
  • DOI :https://doi.org/10.7584/JKTAPPI.2019.06.51.3.45
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