Title: Influences on Dispersion of SiO_2 Nano-powder in Aqueous System
Abstract: Sodium dodecylbenzenesulfonate(SDBS) was used as the dispersant for the dispersion of SiO2 nano-powder in water through ultrasonic treatment.Influence of SDBS content and ultrasonic treatment time on the suspension stability was investigated by particle size distrubition analysis of SiO2 and the determination of Zeta potential and transmittance of the suspension.Results show that with increasing SDBS content,the particle size of SiO2 decreases remarkably and then increases obviously,which is similar to the case of increasing the ultrasonic treatment time.With optimum SDBS content,the suspension of SiO2 nano-powder possesses a good dispersing stability because of the existence of electrostatic and steric effects.The optimum dispersing condition is SDBS of 1.6wt% with the ultrasonic time of 18 min.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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Cited By Count: 1
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