CHARACTERIZATION OF NANOMETERED TIO2 COLLOIDS AND ITS HIGH RETENTION EFFICIENCY TO NEWSPRINT PULP
The nanometered TiO2 colloid was synthesized with the hydrolysis of titanyl organic compounds. XRD, TEM, SEM and laser scattering analysis revealed the colloidal TiO2 particles were spherical anatase crystalline with mean size 7.9 nm. The specific surface area (Sbet) is 262.7 m2/g. The relationships between zeta potential and pH as well as ionic strength have been studied with zeta potential detector. The flocculation and retention experiments indicated the retention efficiency of nanometered tiO2 colloid to the newsprint pulp increases 50% than CPAM, but its dosage is only 1/10 of CPAM. The high retention efficiency of nanometered TiO2 colloids can be owing to its tiny particle size and huge special surface area. In addition, the researches confirmed the nanometered TiO2 colloid is unfavorable to using in the high acidic pulp system.
nanometered TiO2 colloid Retention aid Zeta potential papermaking
Chen Xiaoquan Liu Huanbin He Beihai Zhao Guanglei
State Key Laboratory of Pulp and Paper Engineering, South China University of Technology Guangzhou 510640, China
国际会议
广州
英文
156-159
2006-11-08（万方平台首次上网日期，不代表论文的发表时间）