Effect of Molar Ratios of DES on Lignin Contents and Handsheets Properties of Thermomechanical Pulp

Kyoung-Hwa Choi; Myoung-Ku Lee; Jeong-Yong Ryu

doi:10.7584/ktappi.2016.48.2.028

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Effect of Molar Ratios of DES on Lignin Contents and Handsheets Properties of Thermomechanical Pulp TMP의 LB 공융용매 처리 시 젖산/베타인 몰 비율이 리그닌 함량 및 수초지 특성에 미치는 영향

30 April 2016. pp. 28-33

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Abstract

This study was conducted to investigate the effects of deep eutectic solvent (DES) treatment on properties of TMP fibers and handsheets. DES was prepared by mixing of lactic acid and betaine (L and B), and the molar ratio of these two components mixtures was controlled to 2:1 (L:B=2:1) and 5:1 (L:B=5:1). As results, lignin was partly extracted from the TMP fibers. Especially, the delignification of TMP samples was promoted according to the increase of the molar ratio of lactic acid. Except for tear index, both tensile index and burst index of handsheets were increased when higher molar ratio of lactic acid was mixed for DES preparation. However, the LB DES treatment of TMP fibers didn't give any effect on the optical properties of TMP handsheets. The plausibility of TMP fiber was to be enhanced by LB DES treatment.

Keywords

Deep eutectic solvent

LB (lactic acid and betaine)

TMP (thermomechanical pulp)

Klason lignin

handsheet 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 : 48
No :2
Pages :28-33
Received Date : 2016-03-22
Revised Date : 2016-04-06
Accepted Date : 2016-04-07
DOI :https://doi.org/10.7584/ktappi.2016.48.2.028

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

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Literature Cited