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2022 Vol.54, Issue 2 Preview Page
Utilization of TEM with Automated Tile Scan Technique for Length Determination of CNF
Byeongcheol Min12
,
Hee-Ae Kwon3
,
Ohkyung Kwon4‡
,
Soo-Jeong Shin5†
1Department of Wood & Paper Science, Chungbuk National University, Postdoctoral Fellow
2R&D Institue Pulp & Paper Team, Moorim P&P, Deputy General Manager, Ulsan
3Department of Wood & Paper Science, Chungbuk National University, Student
4National Instrumentation Center for Environmental Management (NICEM), Seoul National University, Research Scientist
5Department of Wood & Paper Science, Chungbuk National University, Professor
†Corresponding author: E-Mail: soojshin@cbnu.ac.kr (Address: Department of Wood & Paper Science, Chungbuk National University, Cheongju, 28644, Republic of Korea)
‡Co-corresponding Author: E-Mail: zoom@snu.ac.kr (Address: National Instrumentation Center for Environmental Management, Seoul National University, Seoul, 08826, Republic of Korea)
30 April 2022. pp. 9-17
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Abstract

Large field of view (FOV) imaging was introduced and evaluated to characterize length and width of cellulose nanofibril (CNF) by transmission electron microscopy (TEM) with automation capability. New imaging method provided an image area as wide as covering one hole on grid. The large FOV image provided 10×10 of tile image which can cover 2500 μm2 of sample area. Large FOV imaging has a great advantage to obtain massive information for average length of CNF. The imaging method enable to overcome the limitation of conventional TEM imaging to elicit average length of CNF. The average length and width of CNF was 375 nm and 7 nm, respectively. Length-weighted average length of CNF was 651 nm. Study to select the kind of support film resulted as carbon film was the best among silicon monoxide and carbon. Carbon film was more durable to high electron beam energy exposure and better to disperse CNF separately than silicon monoxide.

Keywords
Cellulose nanofibril
TEM
large field of view
width
nanocellulose
References

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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 : 54
  • No :2
  • Pages :9-17
  • Received Date : 2022-02-07
  • Revised Date : 2022-03-11
  • Accepted Date : 2022-03-18
  • DOI :https://doi.org/10.7584/JKTAPPI.2022.04.54.2.9
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