Publisher : Korea Technical Association of the Pulp and Paper Industry
DOI : 10.7584/ktappi.2016.48.1.075
Title & Authors
Changes of BCTMP Fibers and Handsheets Properties by the Treatment of LB DES at Different Molar Ratios Choi, Kyoung-Hwa; Nam, Yun-Seok; Lee, Myoung-Ku; Ryu, Jeong-Yong;
This study was conducted to investigate the effects of deep eutectic solvent (DES) treatment on BCTMP fibers and handsheets properties. DES was prepared using lactic acid and betaine (LB), and the molar ratio of these two components mixtures was controlled to 2:1 (LB 2:1) and 5:1 (LB 5:1). As results, 2% of BCTMP pulp (o.d. weight) was extracted when it was treated by LB 5:1 at for 12 hours, stirring constantly at 120 rpm. In contrast, lignin was not extracted when BCTMP was mildly treated by the LB DES mixed with 50% of distilled water at the reacting condition of temperature for 2 hours using water bath. These results indicate that conditioned water content and adequate reaction time are needed to achieve effective extraction of lignin. It was also found that stiffening of cellulose fiber due to the mild treatment of LB DES to BCTMP fiber leads to the increase of paper bulk without the loss of strength.
Deep eutectic solvent;LB (lactic acid and betaine);bleached chemithermomechanical pulp;fiber properties;handsheet properties;
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