Production of Cellulose Beads with Tetraethylammonium Hydroxide-Urea Solvent and Dropping Technique : Effects of Concentration of Cellulose Solution

Younglae Kim; Hee-Jin An; Byoung-Uk Cho

doi:10.7584/JKTAPPI.2021.02.53.1.83

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Production of Cellulose Beads with Tetraethylammonium Hydroxide-Urea Solvent and Dropping Technique : Effects of Concentration of Cellulose Solution TEAH-Urea 용제 및 드롭핑 기술에 의한 셀룰로오스 비즈 제조 : 셀룰로오스 용액 농도의 영향

28 February 2021. pp. 83-89

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Abstract

We investigated the effects of different cellulose concentrations in tetraethylammonium hydroxide (TEAH)-urea solvents on the properties of cellulose beads produced with the dropping method. Cellulose beads in the diameter range of 500–3,000 μm (or 950–1,500 μm average particle size) were produced by varying cellulose concentrations, and by varying the inner diameter of a syringe needle. The smaller the inner diameter and the lower the cellulose concentration, the smaller the bead size. The effects of cellulose concentrations on cellulose bead size were clearly evident when using a relatively large inner diameter syringe needle, whereas cellulose concentrations did not influence bead size when a relatively smaller inner diameter syringe needle was used. In addition, varying cellulose concentrations did not significantly influence the chemical structure and crystallinity of cellulose II.

Keywords

Cellulose beads

tetraethylammonium hydroxide-urea solvent

dropping technique cellulose solution concentration

particle size

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 : 53
No :1
Pages :83-89
Received Date : 2021-02-03
Revised Date : 2021-02-18
Accepted Date : 2021-02-19
DOI :https://doi.org/10.7584/JKTAPPI.2021.02.53.1.83

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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Literature Cited