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2024 Vol.56, Issue 5 Preview Page

Research Article

Effect of Cellulose Concentration and Drying Method on Properties of Cellulose Beads

셀룰로오스 농도와 건조 방법이 셀룰로오스 비즈 특성에 미치는 영향

Se-Young Oh1
,
Byoung-Uk Cho2†
오 세영1
,
조 병욱2†
1Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University
2Dept. of Paper Material Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University
1강원대학교 산림환경과학대학 제지공학과, 학생
2강원대학교 산림환경과학대학 종이소재과학전공, 교수
†Corresponding author: E-Mail: bucho@kangwon.ac.kr (Address: Dept. of Paper Material Science & Engineering, Kangwon National University, Chunchon, Republic of Korea)
30 October 2024. pp. 107-113
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Abstract

The high degree of polymerization (DP) of cellulose of chemical pulps results in a high viscosity of cellulose solution, which has restricted its use in concentrations above 4% for preparation of cellulose beads via a dropping method. In this study, cellulose fibers with a reduced DP (about 400) were prepared using mechano-chemical pretreatments, allowing the concentration of cellulose solutions to increase up to 10%. The effects of cellulose concentration and drying methods (oven-drying and freeze-drying) on the properties of cellulose beads, produced via the dropping method, were investigated. The results showed that as the cellulose concentration increased, the strength increased and the internal structure became denser. Freeze-drying facilitated the formation of a honeycomb-like porous internal structure within the beads, especially at lower cellulose concentrations. However, at higher cellulose concentrations, even in freeze-drying, the internal structure of the beads became denser. The findings suggest that manipulating the concentration of the cellulose solution and selecting appropriate drying methods can tailor the internal structure and mechanical properties of the cellulose beads, making them suitable for a wide range of industrial applications.

Keywords
Cellulose beads
cellulose solution concentration
drying method
mechano-chemical pretreatment
TEAOH/urea solvents
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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 :107-113
  • Received Date : 2024-10-04
  • Revised Date : 2024-10-12
  • Accepted Date : 2024-10-16
  • DOI :https://doi.org/10.7584/JKTAPPI.2024.10.56.5.107
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