Alkyl Ketene Dimer (AKD) Paper Sizing Efficiency in Term of Fiber Surface Charge  

作　　者：WANG Jian QIAN Li WANG Zhijie 王建;钱丽;王志杰(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science &Technology;State Key Laboratory of Pulp and Paper Engineering,South China University of Technology)

机构地区：[1]College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science ＆ Technology,Xi＇an 710021,China [2]State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,China

出　　处：《Journal of Donghua University(English Edition)》2018年第3期228-231,共4页东华大学学报（英文版）

基　　金：National Natural Science Foundation of China(No.31370578);State Key Laboratory of Pulp and Paper Engineering,China(No.201508)

摘　　要：The charge density of cellulose fibers is a key parameter in the papermaking systems,and this is particularly true for the Alkyl Ketene Dimer( AKD) paper sizing.Zeta potential and cationic demand are often used to characterize these charges.Generally,a similar sizing performance would be obtained when the fibers with similar morphology and charge characteristics are used.However,in a mill trial,it was shown that three bleached birch pulp samples,with similar fiber morphology,and zeta potential,had different AKD sizing behaviors.In this study,the surface charges of these pulp samples,measured using the polyelectrolyte titration methods,were investigated.The results showed that lower sizing efficiency of fibers were due to their lower surface charges.It was concluded that the direct measurement of surface charge of cellulose fibers can be more appropriate to evaluate the AKD paper sizing efficiency.The charge density of cellulose fibers is a key parameter in the papermaking systems,and this is particularly true for the Alkyl Ketene Dimer（ AKD） paper sizing.Zeta potential and cationic demand are often used to characterize these charges.Generally,a similar sizing performance would be obtained when the fibers with similar morphology and charge characteristics are used.However,in a mill trial,it was shown that three bleached birch pulp samples,with similar fiber morphology,and zeta potential,had different AKD sizing behaviors.In this study,the surface charges of these pulp samples,measured using the polyelectrolyte titration methods,were investigated.The results showed that lower sizing efficiency of fibers were due to their lower surface charges.It was concluded that the direct measurement of surface charge of cellulose fibers can be more appropriate to evaluate the AKD paper sizing efficiency.

关 键 词：fiber charge zeta potential polyelectrolyte adsorption sizing efficiency Alkyl Ketene Dimer(AKD) 

分 类 号：TS712[轻工技术与工程—制浆造纸工程]