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http://dx.doi.org/10.7584/ktappi.2015.47.4.054

Effects of Kneading Concentration on Characteristics of HwBKP Fibers  

Seo, Ji-Hye (Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University)
Choi, Kyoung-Hwa (Changgang Institute of Paper Science and Technology, Kangwon National University)
Cho, Byoung-Uk (Dept. of Paper Science & Engineering, College of Forest and Environmental Sciences, Kangwon National University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.47, no.4, 2015 , pp. 54-59 More about this Journal
Abstract
In this study, effects of kneading concentration on characteristics of hardwood bleached kraft pulp (HwBKP) fibers were elucidated. A laboratory two-shaft kneader was utilized for kneading. Kneading concentration was varied in the range of 15-30% (w/w) and the number of kneading treatment was adjusted between 0 and 6 passes. It was found that kneading concentration influenced fiber characteristics. At 15% of pulp concentration, fiber length slightly increased with increasing the number of kneading passes, while other morphological properties such as fiber width and curl decreased: fiber straightening occurred. In addition, the increase in WRV and the decrease in CSF were the largest at 15% kneading concentration, meanings that fibrillation mainly occurred. In contrast, at higher kneading concentration exceeding 20%, fiber deformation like curl was mainly occurred. Also, at kneading concentration of 20% and 30%, fiber length decreased with the number of kneading passes while other morphological properties such as fiber width, and WRV increased. Severe fiber entanglement was found at 30% kneading, which shall be removed during papermaking.
Keywords
Kneading; pulp slurry concentration; fiber characteristics; curl; WRV;
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Times Cited By KSCI : 2  (Citation Analysis)
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