Application of the Taguchi Method in Analyzing the Impact of Modified Gemini Surfactants on TiO 2 Nano‐Suspension

Regarding the TiO 2 nano‐suspension under different influencing parameters such as hydrophilic chain length of the modified gemini surfactant (dispersant), electrolyte concentration and dispersant concentration, this study applied the Taguchi Method to analyze the optimal parameters of the TiO 2 nano‐suspension using an L9(3 3 ) orthogonal array for making the experimental formulas with the average particle size of the suspension as the smaller‐the‐better indicator. The experimental results suggested that the dispersing particle size of the nano‐suspension was affected in order by the dispersant concentration (64.11%), the hydrophilic group chain length of dispersant (11.16%) and the electrolyte concentration (3.04%). Then, by the confirmation experiments based on the optimal parameter combinations of Taguchi Method analysis, the TiO 2 nano‐suspension of uniform and minimized particle size were obtained. The result was within the 95% confidence interval, indicating that the reproducibility of the parameter design was high.