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Song Han,Wei Liu,Shaoshuai Wu,Zhaoxia Long,Qingxi Hou 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
Effects of four different kinds of industrial grade MgO as one alkali source in the alkaline peroxidebleaching of poplar chemi-thermomechanical pulp (CTMP) were investigated. The particle size andactivity of the MgO played the most important role in the improvement of optical and strengthproperties of the bleached CTMP. At a 25% substitution percentage of MgO for NaOH, a 77.4%ISObrightness and the optimal tensile index of the bleached CTMP could be obtained. When industrial gradeMgO was applied, appropriate increase in Na2SiO3 dosage and pulp consistency could improve thebrightness and strength properties of the bleached CTMP.