Modification of Nanometer Titanium Dioxide and Its Application as Part of Novel Retention Systems

摘要：

Various retention systems have been developed and widely accepted in the past decades.In this work,the synthesis,characterization,and evaluation of surface-modified cationic titanium dioxide nanoparticles as part of retention systems were investigated.Quaternary amine groups were introduced onto the nanoTiO2 surface using a kind of cationic type aluminium zirconium organic metal coupling agent (CA).The particle size distribution showed better dispersion of nano TiO2 atter modification,and the diameter of the modified nano TiO2 was determined by laser particle size analyzer.To characterize the surface properties of the modified nano TiO2 particles,ζ potential and charge density were determined.In addition,the retention of old newsprint pulp was induced by the modified nano TiO2 particles in conjunction with anionic polyacrylamide.The retention effect was investigated by dynamic flocculation experiments,and the mechanisms of this nanoparticles/polymer retention system were also discussed.

关键词： nano TiO2 modification anionic polyacrylamide retention

作者: LI BIN LI YOUMING YANG WENLIANG

作者单位: National Engineering Research Center of Papermaking & Pollution Control,South China University of Technology,Guangzhou,510640,China

会议类型: 国际会议

会议名称: 第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)

会议地点: 天津

会议语种:英文

页码: 778-781

在线出版日期: 2008-05-14（万方平台首次上网日期，不代表论文的发表时间）