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2016 Vol.48, Issue 4 Preview Page
Effects of Cosolvent Ratio on Fiber Characteristics of SwBKP during Alkali-Cosolvent Swelling System

알칼리 공용매 팽윤처리 시 공용매 비율이 SwBKP 섬유특성에 미치는 영향

Ji-Hye Seo
,
Kyoung-Hwa Choi‡1
,
Byoung-Uk Cho†
서지혜
,
최경화 ‡1
,
조병욱 †
•Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chunchon, 24341
1Changgang Institute of Paper Science and Technology, Kangwon National University, Chunchon, 24341
•강원대학교 산림환경과학대학 제지공학과
1강원대학교 창강제지기술연구소
†E-mail: bucho@kangwon.ac.kr
‡E-mail: bleaching@kangwon.ac.kr
30 August 2016. pp. 47-53
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Abstract

Alkali swelling pretreatment can be helpful to reduce the energy consumption for grinding during the production of microfibrillated cellulose (MFC) by weakening the internal bonding between fibrils. To improve alkaline pretreatment efficiency, dimetyl sulfoxide (DMSO) was applied as co-solvent. Contribution of the cosolvent on fiber characteristics was investigated with softwood bleached kraft pulp (SwBKP). For alkali treatment in H2O-DMSO solvents, fiber width and curl was increased with increasing DMSO cosolvent ratio to 30% and then leveled-off. In addition, the increase in WRV by alkali treatment was attenuated by DMSO cosolvent addition. Comparing with the previous results, it could be concluded that DMSO could promote swelling of pulp fibers. Above 30% of DMSO mixing ratio, the crystalline structure of pulp fibers showed the mixed pattern of cellulose II and cellulose III.

Keywords
Alkali swelling
cosolvent
DMSO
fiber characteristics
crystalline structure
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 : 48
  • No :4
  • Pages :47-53
  • Received Date : 2016-07-28
  • Revised Date : 2016-08-16
  • Accepted Date : 2016-08-17
  • DOI :https://doi.org/10.7584/JKTAPPI.2016.08.48.4.47
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