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다국어 초록 (Multilingual Abstract)

In this study, we attempted to manufacture a scale-up Taylor-flow nanogrinder by compensating the shortcomings of a pilot scale Taylor-flow nanogrinder derived from previous studies. Two types of cellulose nanofibers (CNFs) were prepared depending on the pretreatment using a scale-up Taylor-flow nanogrinder and their characteristics were measured to evaluate the grinding efficiency. The capacity of the grinder cylinder and the mixer increased respectively while increasing the capacity of a scale-up Taylor-flow nanogrinder. The size of the diamond particles electrodeposited on the surface of the stator and rotor, which were the components of the grinder cylinder, and the gap between the stator and rotor were reduced to improve the grinding efficiency. In addition, a multi-stage centrifugal pump was installed to induce a uniform flow of CNF slurry according to the increased grinder capacity. When RE-CNF (refining CNF) was manufactured from refined hardwood bleached kraft pulp (HwBKP) using a scale-up Taylor flow nanogrinder, the average particle size and fiber width decreased and the low shear viscosity decreased as the grinding time increased due to HwBKP fibrillation. However, considering the fiber width's average value and standard deviation, it was concluded that the refining pretreatment was not adequate for this facility. When EN-CNF (enzyme-pretreated CNF) was manufactured from enzyme-pretreated HwBKP using a scale-up Taylor flow nanogrinder, the particle size and fiber width decreased linearly as the enzyme dosage and the grinding time increased simultaneously. In particular, when the grinding was carried out for 5-6 h, the fiber width of EN-CNF decreased to 50 nm or less, and the standard deviation decreased.
This meant that enzyme pretreatment was efficient for the manufacture of CNF using a scale-up Taylor-flow nanogrinder. Nevertheless, the optimum enzyme dosage and the grinding time should be confirmed carefully to acquire the desired qualities of EN-CNF.

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참고문헌 (Reference)

1 조해민 ; 이수현 ; 이지영 ; 박노성, "셀룰로오스 나노섬유 제조용 국산 테일러 유동 나노분쇄기 개발 II - 펄프 수종에 따른 카르복시메틸화 셀룰로오스 나노섬유의 물성 평가 -" 한국펄프·종이공학회 54 (54): 34-42, 2022

2 조해민 ; 김도훈 ; 이수현 ; 이지영 ; 박노성, "셀룰로오스 나노섬유 제조용 국산 테일러 유동 나노분쇄기 개발 I - 파일럿 테일러 유동 나노분쇄기 성능 평가를 위한 효소 전처리 셀룰로오스 나노섬유의 제조 및 물성 평가 -" 한국펄프·종이공학회 54 (54): 5-13, 2022

3 Taylor, Geoffrey Ingram, "VIII. Stability of a viscous liquid contained between two ratating cylinders" 223 (223): 289-343, 1923

4 Park, T. U., "Utilization of cellulose micro/nanofibrils as paper additive for the manufacturing of security paper" 13 (13): 7780-7791,

5 Gourlay, K., "The potential of endoglucanases to rapidly and specifically enhance the rheological properties of micro/nanofibrillated cellulose" 25 : 977-986, 2018

6 Xie, H., "Recent strategies in preparation of cellulose nanocrystals and cellulose nanofibrils derived from raw cellulose naterials" 7923068 : 1-26, 2018

7 Djafari Petroudy, S. R., "Recent advences in cellulose nanofibers preparation through energy-efficient approaches: A review" 145 (145): 6792-, 2021

8 Dieter, K., "Nanocelluloses: A new family of nature-based materials" 50 (50): 5438-5466, 2011

9 Trache, D., "Nanocellulose: From fundamentals to advanced applications" 8 (8): 1-33, 2020

10 Youssef Habibi, "Key advances in the chemical modification of nanocellulose" 43 (43): 1519-1542, 2014