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2020 Vol.52, Issue 1 Preview Page
A Comparative Analysis of the Characteristics of Cellulose Nanofibril Films Fabricated by Batch-Wise Mode

단속식 박막 제조 조건에 따른 셀룰로오스 나노 피브릴 필름의 특성 비교 분석

Eun Ji Seo1
,
Kang-Jae Kim2
,
Jung Myoung Lee3†
서은지 1
,
김강재 2
,
이중명 3†
1Department of Wood Science and Technology, Kyungpook National University
2Agricultural Science and Technology Research Institute, Kyungpook National University
3Major in Wood Science and Technology, Department of Wood Science and Technology, School of Forestry, Science and Landscape Architecture & Agricultural Science and Technology Research Institute, Kyungpook National University
1경북대학교 임산공학과, 학생
2경북대학교 농업과학기술연구소, 연구원
3경북대학교 산림과학·조경학부 임산공학전공 및 농업과학기술연구소, 교수
†Corresponding author: E-Mail: jmylee@knu.ac.kr (Address: Major in Wood Science and Technology, Department of Wood Science and Technology, School of Forestry, Science and Landscape Architecture & Agricultural Science and Technology Research Institute, Kyungpook National University, Daegu, 41566, Republic of Korea)
28 February 2020. pp. 11-19
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Abstract

In this paper, we compare the physical and mechanical characteristics of cellulose nanofibril (CNF) films fabricated using the solvent casting and vacuum filtration methods through a statistical analysis to facilitate the process of CNF film fabrication and CNF quality assurance. For a given CNF film diameter targeting 30 grammage (g/m2), the typical solvent-casting method requires longer fabrication time (up to four days) owing to the slow drying process, whereas vacuum filtration combined with elevated drying temperatures (from ambient to 80°C) significantly reduced the fabrication time up to 5 h. There were some differences in the apparent densities and tensile indexes of the CNF films fabricated via the solvent casting and vacuum filtration methods, depending on how quickly the wet-web and drying temperatures consolidated under applied pressure. The higher drying temperatures used in the vacuum-filtration method tended to increase the tensile index of the films. However, according to the results of the Tukey honestly significant difference (HSD) test, the tensile indexes and elongations of the films fabricated using the vacuum filtration method were not statistically different from those of the films fabricated using the solvent casting method, suggesting that the method of preparation of CNF films by combining the vacuum filtration approach with elevated drying temperatures could be used as a tool to assess the characteristics of CNF materials.

Keywords
CNF film
ANOVA
post-hoc
solvent casting
vacuum filtration
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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 : 52
  • No :1
  • Pages :11-19
  • Received Date : 2020-01-21
  • Revised Date : 2020-02-07
  • Accepted Date : 2020-02-10
  • DOI :https://doi.org/10.7584/JKTAPPI.2020.02.52.1.11
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