INFLUENCE OF ALKALINE PEROXIDE BLEACHING ON THE ELECTROKINETIC PROPERTIES OF ASPEN CTMP
CTMP from aspen was subjected to alkaline peroxide bleaching at various conditions, and the electrokinetic properties of resulted pulp were investigated. The correlation of increased charge groups with the swelling and strength properties of the pulp was also evaluated. The results indicated that carboxyl content, surface charge, dissolved charge, and zeta potential of BCTMP increased with increasing the dosages of sodium hydroxide and hydrogen peroxide, elevating the bleaching temperature and extending the bleaching time. Furthermore, the water retention value of BCTMP increased with increasing charge groups, indicating that the swelling ability of bleached fibres was improved. It was also found that alkaline peroxide bleaching could improve the strength properties but reduce light scattering coefficient of papers. Compared with control pulp, the length and width of alkaline peroxide bleached pulp fibres changed little, but their curl and kink index declined sharply.
alkaline peroxide bleaching carboxyl content surface charge dissolved charge zeta potential
Yingjuan Fu Yanzhu Guo Menghua Qin Fengshan Zhang Jianhua Li
Shandong Polytechnic University,Jinan,Shandong,250353,China;Huatai Group Corp.Ltd.,Dongying,Shandon Shandong Polytechnic University,Jinan,Shandong, 250353, China Shandong Polytechnic University,Jinan, Shandong, 250353, China Huatai Group Corp. Ltd.,Dongying, Shandong,257335, China
国际会议
International Mechanical Pulping Conference 2011(2011国际机械浆学术会议)
西安
英文
279-282
2011-06-26（万方平台首次上网日期，不代表论文的发表时间）