The Hamaker constant of anatase aqueous suspensions

• Published in: Journal of colloid and interface science Vol. 316; no. 2; pp. 451 - 456
• Main Authors: Gómez-Merino, A.I., Rubio-Hernández, F.J., Velázquez-Navarro, J.F., Galindo-Rosales, F.J., Fortes-Quesada, P.
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 15.12.2007; Elsevier
• Subjects: Anatase; Chemistry; Colloidal state and disperse state; Contact angle; Exact sciences and technology; General and physical chemistry; Hamaker constant; Surface physical chemistry; Yield stress; Zeta potential; Hamaker constant; Contact angle; Anatase; Zeta potential; Yield stress; Electrokinetic potential; Suspension
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2007.08.001

The linear relationship of the yield stress with the square zeta potential may be used to determine the Hamaker constants in suspensions. In this work we have obtained the Hamaker constant for the attractive forces between anatase particles in aqueous suspensions using this method and compared them with those obtained by contact angle measurement. The results show excellent agreement. The linear relationship of the yield stress with the squared ζ potential may be used to determine the Hamaker constant in suspensions. In this work we have obtained the Hamaker constant for the attractive force between anatase particles in aqueous suspensions using this method, and compared it with those obtained by contact angle measurement. The results show an excellent agreement.