Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2289
Title: Synergistic effect of polymer-surfactant mixtures on the stability of aqueous silica suspensions
Authors: Şakar-Deliormanlı, Aylin
Keywords: Silica
Suspensions
Surfactants
Aqueous silica suspensions
Issue Date: 2007
Publisher: Elsevier Ltd.
Source: Şakar‐Deliormanlı, A. (2007). Synergistic effect of polymer-surfactant mixtures on the stability of aqueous silica suspensions. Journal of the European Ceramic Society, 27(2-3), 611-618. doi:10.1016/j.jeurceramsoc.2006.04.117
Abstract: The aim of the present work was to investigate the effect of cationic/nonionic surfactant mixtures on the dispersion and flocculation behavior of aqueous silica suspensions. In the study dodecylamine (DDA) was used as the cationic surfactant and polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO-PPO-PEO) triblock copolymers were employed as the nonionic surfactant. The dispersion and flocculation behavior of aqueous silica suspensions were studied mainly by turbidity measurements at low solids loading (0.05 vol.%) to observe the stability of the system for a given time period. Rheological measurements were performed at higher solids loadings to determine the viscosity as a function of shear rate. Adsorption behavior of single and mixed surfactants onto silica surface was studied using a total organic carbon analyzer. Results of the study showed that dispersion and flocculation behavior of aqueous silica suspensions depends on the type and concentration of surfactant, cationic/nonionic surfactant ratio and surfactant addition sequence to the system.
URI: http://doi.org/10.1016/j.jeurceramsoc.2006.04.117
http://hdl.handle.net/11147/2289
ISSN: 0955-2219
0955-2219
1873-619X
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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