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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

  • Choi, Kyoung-Hwa (Changgang Institute of Paper Science and Technology, Kangwon National University) ;
  • Lee, Myoung-Ku (Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University) ;
  • Ryu, Jeong-Yong (Changgang Institute of Paper Science and Technology, Kangwon National University)
  • 최경화 (강원대학교 창강제지기술연구소) ;
  • 이명구 (강원대학교 산림환경과학대학 제지공학과) ;
  • 류정용 (강원대학교 창강제지기술연구소)
  • Received : 2016.03.22
  • Accepted : 2016.04.07
  • Published : 2016.04.30

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

References

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