Effects of Alkali-Cosolvent Pre-treatment on Properties  of SwBKP Handsheets

Kyoung-Hwa Choi; Ji-Hye Seo; Byoung-Uk Cho

doi:10.7584/JKTAPPI.2017.10.49.5.42

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Effects of Alkali-Cosolvent Pre-treatment on Properties of SwBKP Handsheets 알칼리-공용매 팽윤 전처리가 SwBKP 수초지 특성에 미치는 영향

30 October 2017. pp. 42-48

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Abstract

Effects of the alkali-cosolvent (dimethyl sulfoxide, DMSO) pre-treatment of softwood bleached kraft pulp (SwBKP) on the handsheet properties were investigated. In order to evaluate the effect of DMSO addition ratio in the DMSO-water solvent system, the DMSO ratio was varied from 0% to 70% and NaOH solution concentration was adjusted to 13% (w/w). In addition, the concentration of NaOH solution was varied from 0% to 13% at DMSO-water solvent (50:50) in order to evaluate the effect of NaOH soultion concentration. It was found that bulk of handsheet was increased with increasing the addition ratio of DMSO. Also, the addition of DMSO reduced the minimal concentration of NaOH solution to obtain the maximum handsheet bulk. On the other hand, paper strength was decreased with increasing the addition ratio of DMSO during the alkali swelling while no distinct effect of optical properties on handsheets was found.

Keywords

Alkali swelling

cosolvent

dimethyl sulfoxide (DMSO)

bulk

paper strength

optical properties

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 : 49
No :5
Pages :42-48
Received Date : 2017-10-10
Revised Date : 2017-10-19
Accepted Date : 2017-10-20
DOI :https://doi.org/10.7584/JKTAPPI.2017.10.49.5.42

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

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Literature Cited