THE INFLUENCE OF STORAGE ON BAMBOO PULPS AND PAPER QUALITY
This study presents research dealing with the way in which storage affects bamboo pulp fibres and the quality of the resulting paper. Two bamboo pulps, cooked to different kappa numbers and then ECF-bleached to similar levels of ISO-brightness, were used to examine the relationship between refining, storage, pulp/fibre properties and the quality of the final paper sheet more closely. The results of this investigation showed that the effects of refining on pulp fibres are not stable: storing bamboo pulp fibres whilst under agitation had a considerably negative impact on properties such as tensile index, TEA, elongation and burst strength of the paper sheet. These effects were more pronounced at higher degrees of refining and for pulps with higher kappa numbers. The apparent density of the paper sheets decreased with agitated storage, whereas the relationship between density and tensile index strength was not affected. The decreases in strength properties after storage in this study are at least partly due to an increase in the number of kinks per mm fibre and a decrease in the effective fibre length and width. It should be observed that reversed latency in the paper industry introduces quality variations, and has an increased energy demand if a certain tensile index level is to be reached. It is easy for incorrect conclusions to be reached regarding the potential of substituting imported hardwood pulps with domestic bamboo pulps if they are not handled properly when used in a furnish for different final products.
bamboo non-wood refining storage fibre dimensions kinks strength properties
Guo Sanchuan Anette Heijnesson-Hult(e)n Jiri Basta Thomas Greschik Zhan Huaiyu Ulf Germg(a)rd
Karlstad University, SE-651 88 Karlstad, Sweden Eka Chemicals AB, SE-445 80 Bohus, Sweden State Key Laboratory of P&P Engineering, South China University of Technology, Guangzhou, 510640,Chi
国际会议
广州
英文
734-738
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）