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Behavior of PCC During Loading at High Consistency Pulp Slurry  

Cho, Byoung-Uk (Dept. of Paper Science & Engineering, College of Forest Environmental Sciences, kangwon National University)
Won, Jong-Myoung (Dept. of Paper Science & Engineering, College of Forest Environmental Sciences, kangwon National University)
Publication Information
Journal of Korea Technical Association of The Pulp and Paper Industry / v.43, no.5, 2011 , pp. 43-48 More about this Journal
Abstract
Filler loading at thick stock was carried out in order to verify if the dual addition of filler can be used as a means to reduce the detrimental effects of filler on the strength properties of paper. PCC was added to 3.5% pulp slurry blended with HwBKP, BCTMP and SwBKP. Cationic starch was used as a fixing agent. The mixture of PCC and pulp was stirred for 5, 10 and 20min. at 1,000 rpm. The remaining PCC was washed out before handsheet making. PCC particles were flocculated and fixed on the pulp fiber and/or space between fibers. It is expected that the flocculation and inclusion of PCC can be helpful to improve the strength properties of paper due to the reduction of detrimental effect in fiber bonding. The distinct tendency in PCC flocculation and fixing on pulp fiber was not observed by the change of cationic starch dosage and treatment time.
Keywords
PCC; thick stock; cationic starch; SEM; flocculation; fixing; fibrils;
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