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2016 Vol.48, Issue 6 Preview Page
Effects of Alkali-Cosolvent Swelling Pretreatment on Grinding Properties of BKP

알칼리-공용매 팽윤 전처리가 BKP 섬유의 그라인딩 특성에 미치는 영향

Ji-Hye Seo
,
Kyoung-Hwa Choi1‡
,
Byoung-Uk Cho†
서지혜
,
최경화 1‡
,
조병욱 †
1Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chunchon
1Changgang Institute of Paper Science and Technology, Kangwon National University, Chunchon
1강원대학교 산림환경과학대학 제지공학과
1강원대학교 창강제지기술연구소
†E-mail: bucho@kangwon.ac.kr
‡E-mail: bleaching@kangwon.ac.kr
30 December 2016. pp. 247-254
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Abstract

In this study, the effects of alkali-cosolvent swelling pretreatment on grinding characteristics of hardwood bleached kraft pulp (HwBKP) fibers was investigated. Dimetyl sulfoxide (DMSO) was applied as a cosolvent. It was found that alkali swelling pretreatment decreased the grinding efficiency of HwBKP compared with non-treated pulp. The addition of DMSO cosolvent (H2O-DMSO solvents) further decreased the grinding efficiency. Comparing at a given specific energy consumption, the non-swelling fiber showed the highest slurry viscosity and WRV of MFC, followed by the NaOH swelling fibers in H2O solvent and the NaOH swelling fibers in H2O-DMSO solvents. It was speculated that damping of grinding efficiency by alkali swelling was caused by the reduction of acidic group in fibers due to the loss of hemicellulose and cellulose with low molecular weights including β- and γ-celluloses.

Keywords
Alkali swelling
cosolvent
dimethyl sulfoxide (DMSO)
grinding properties
microfibrillated cellulose (MFC)
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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 : 48
  • No :6
  • Pages :247-254
  • Received Date : 2016-11-28
  • Revised Date : 2016-12-21
  • Accepted Date : 2016-12-22
  • DOI :https://doi.org/10.7584/JKTAPPI.2016.12.48.6.247
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