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2024 Vol.56, Issue 5 Preview Page

Research Article

Characterization of Chemi-thermomechanical Pulping Using Mixed Wood Chips from Pinewood Nematode-Infected Forests
Hyeong-Hun Park1
,
Chul-Hwan Kim1†
,
Tae-Gyeong Lee1
,
Ju-Hyun Park1
,
Min-Sik Park2
,
Jae-Sang Lee2
,
Sung-Hyeon Jeong3
1Researcher, Department of Forest Products, Gyeongsang National University, Gazwa-dong, Jinju 52828, Republic of Korea
2Student, Department of Environmental Materials Science, Gyeongsang National University, Gazwa-dong, Jinju 52828, Republic of Korea
3R&D Center of Jeonju Paper Co. Inc, 59, Palbok-ro, Deokjin-gu, Jeonju-si, Jeollabuk-do 54885, Republic of Korea
†Corresponding author: E-Mail: jameskim@gnu.ac.kr (Address: Department of Forest Products, Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 52828, Republic of Korea)
30 October 2024. pp. 66-77
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Abstract

The study compared the properties of CTMP prepared from pine chips and mixed chips sourced from clear-cut forests in nematode-infested areas in Korea. Key findings include that pine chips required higher refining energy and exhibited lower stock throughput, indicating greater processing difficulty compared to mixed chips. CTMP from mixed chips showed slightly longer fiber length and lower fines content post-refining, suggesting better refining efficiency. No significant difference in shive contents was observed between the two CTMP sources, indicating similar effectiveness in fiber separation. CTMP from mixed chips exhibited better bulk, enhancing the absorbency and softness of the final paper products, and higher tensile strength, making it suitable for durable paper applications. Tear strength was comparable between the two sources, despite slight fiber length differences. Both CTMP types showed no significant difference in optical properties, ensuring consistent visual quality. Additionally, lower pitch number and area in CTMP from mixed chips improved pulp cleanliness and processing efficiency. Overall, mixed chips from nematode-infested mountains in Korea provide significant advantages in energy efficiency, fiber quality, and pitch content, making them valuable raw materials for CTMP production. It can be emphasized that the use of these mixed chips can enhance the economic and environmental sustainability of the pulp and paper industry in Korea.

Keywords
Nematode-infested forest
clear-cutting
chemi-thermomechanical pulp
mixed wood chips
refining
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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 : 56
  • No :5
  • Pages :66-77
  • Received Date : 2024-09-23
  • Revised Date : 2024-10-12
  • Accepted Date : 2024-10-14
  • DOI :https://doi.org/10.7584/JKTAPPI.2024.10.56.5.66
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