CHARACTERISTICS OF CPAM/TITANATE NANO-BELT INDUCED FLOCCULATION OF TALC FILLER
Microparticles with higher aspect ratios generally have higher retention efficiency since their higher microparticle bridging ability. Nano-belts are a new class of one-dimensional nano-materials with extremely large aspect ratios. In this paper, negatively charged sodium titanate nano-belt was synthesized and characterized, and its flocculation effect with CPAM on talc filler was investigated and compared with that of titanium dioxide nano-sphere. The results showed that sodium titanate nano-belt with a 24 h reaction time shows the highest synergistic flocculation effect with CPAM on talc suspension. It has a typical width of 20 to 200 nm and a length of up to several hundred micrometers. It can reach its largest synergistic flocculation effect with CPAM at a much lower addition level than titanium dioxide nano-sphere, and induces a flocculation with a typical flocculation characteristic of microparticle retention systems. Suitable exposure of CPAM chains and segments adsorbed on talc particles by high shear level is helpful for the reflocculation of talc suspension by sodium titanate nano-belt. The CPAM/titanate nanobelt inducing talc flocculation has a rather high shear resistance.
sodium titanate nano-belt CPAM flocculation talc filler titanium dioxides
Wang Jinxia Zhang Xuyan Liu Wenxia
Key Laboratory of Paper Science and Technology of Ministry of Education, Shandong Institute of Light Industry, Jinan, 250353, China
国际会议
广州
英文
1523-1526
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）