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2018 Vol.50, Issue 2 Preview Page
Low Temperature, Atmospheric Pressure and Short Reaction Time (LAS) Pulping of Korean Mixed Oak with Glycol Ether

Glycol Ether를 이용한 국내산 참나무류의 LAS 펄프화

Kang-Jae Kim
,
Gi-Baek Nah1
,
Ji-Ae Ryu1
,
Tae-Jin Eom2†
김강재
,
나기백 1
,
류지애 1
,
엄태진 2†
Agricultural Science and Technology Research Institute, Kyungpook National University, Daegu, 41566
1Department of Wood Science and Technology, Kyungpook National University, Daegu, 41566
2Major in Wood Science and Technology, School of Forestry, Science and Landscape Architecture, Kyungpook National University, Daegu, 41566
경북대학교 농업과학기술연구소
1경북대학교 임산공학과
2경북대학교 산림과학·조경학부 임산공학전공
†Corresponding author: E-Mail: tjeom@knu.ac.kr
30 April 2018. pp. 44-51
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Abstract

The pulp from Korean mixed oaks were prepared by LAS (Low temperature, Atmospheric pressure, and Short reaction time) pulping method with different temperature and reaction. The pulp prepared under low cooking temperature had a high residual lignin content spite of increasing cooking time. However, as the cooking temperature increased, the lignin in the wood was easily removed and the yield of pulp increased and the residual lignin content decreased. The peak intensities derived from hemicellulose and lignin, which have been confirmed from wood chips, are gradually weaker in response to pulping. Peak regions representing cellulose were strongly confirmed from IR data of pulp prepared at more than 110℃. It can be concluded that pulping of Korean mixed oak was suitable for 60 minutes at 110℃. It was predicted that the possibility of using the LAS pulp as a raw material for papermaking was high because the LAS pulp showed the same fiber characteristics as KP. LAS pulp showed higher glucose content than wood chip, many hemicellulose was eluted by acid catalyst and showed low xylose content. The reason why the syringaldehyde ratio of LAS pulp decreased compared to wood chips was that a large amount of lignin was condensed by cooking reaction.

Keywords
Low temperature·Atmospheric pressure and Short reaction time (LAS) pulping
high boiling point solvent
organosolv pulping
delignification
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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 : 50
  • No :2
  • Pages :44-51
  • Received Date : 2018-04-07
  • Revised Date : 2018-04-23
  • Accepted Date : 2018-04-24
  • DOI :https://doi.org/10.7584/JKTAPPI.2018.04.50.2.44
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