IMPROVEMENT OF GALACTOMANNAN HEMICELLULOSE ON RUNNABILITY OF OFFSET NEWSPRINT PAPER MACHINE
Galactomannan(GM) is a heterogeneous polysaccharide hemicellulose, and has a cellulose-like structure resulting in high affinity to cellulosic fibers, which can be adsorbed onto the surface of fibers. Meanwhile, sorb fine cellulose fibers, mineral fillers and colloidal particles are present in fibre suspension at very low addition rate, and are thus regarded as a high-performance wet-additive in the papermaking process. In this study, effects of galactomannan hemicellulose on runnability of offset newsprint paper machine have been discussed via both lab trial and pilot plant. In the suspension of deinked old newspaper fibers pulp, only when a lower dosage of 0.3％~0.5％ (weight fraction) galactomannnan hemicellulose was added might the fiber, colloid composition and filler be bonded together, leading to a higher surface strength and a reduced risk of linting and dusting on printing operation; the initial wet strength might also be increased by ~ 20％ to improve the runnability of wire and press section, when increased strength and retention, and the micro-agglomeration conformation had a little effect on the drainage of pulp stock; the adsorption resulting from molecular association (i.e. hydrogen bond and Van der Waals force) was capable of retaining fine fibers, colloids and inorganics in the fiber web, and reduced the COD content of white water system of paper machine in favor of ‘effluent free’ demand of high-speed paper machine.
galactomannan hemicellulose runnability offset newsprint paper machine
Yang Rendang Ye Maohua Guo Jie Huang Jun Chen Kefu Yang Fei Mo Lihuan Liu Detao HERBER Hruschka Sun Ligong
State Key Laboratory of Pulp & Paper Engineering,South China University of Technology, Guangzhou,510 Danisco China Co., Ltd., Guangzhou, 510060, China
国际会议
广州
英文
2082-2084
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）