Paper Title:
Effect of Sodium Dodecylbenzenesulfonate on Dispersion of SiO2 Nano-Powder in Aqueous System
  Abstract

Good dispersing stability is required for nano-SiO2 which, however, tends easily to conglomerate, to be widely applied as an important functional material of high toughness, high resistance to corrosion and good high-temperature performance. Through ultrasonic treatment, the suspension of SiO2 nano-powder in water was prepared utilizing sodium dodecylbenzenesulfonate (SDBS) as the dispersant. The effect of SDBS content and ultrasonic treatment time on the suspension stability was investigated by way of testing the particle size of SiO2 nano-powder, the Zeta potential and transmittance of the suspension. The results show that with increasing SDBS content, the particle size of SiO2 nano- powder decreases and then increases, 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 due to the existence of electrostatic and steric effects resulting from the particular structure of SDBS. The optimum dispersing condition is SDBS of 1.6 wt% with the ultrasonic time of 18 min.

  Info
Periodical
Advanced Materials Research (Volumes 105-106)
Edited by
Wei Pan and Jianghong Gong
Pages
808-811
DOI
10.4028/www.scientific.net/AMR.105-106.808
Citation
J. Y. Liu, S. N. Ma, J. Qiu, X. B. Suo, "Effect of Sodium Dodecylbenzenesulfonate on Dispersion of SiO2 Nano-Powder in Aqueous System", Advanced Materials Research, Vols. 105-106, pp. 808-811, 2010
Online since
April 2010
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