Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2419
Title: Adsorption of anionic polyelectrolyte and comb polymers onto lead magnesium niobate
Authors: Şakar-Deliormanlı, Aylin
Çelik, Erdal
Polat, Mehmet
Keywords: Polyelectrolytes
Adsorption
Comb polymers
Lead magnesium niobate
Perovskites
Issue Date: Mar-2008
Publisher: Elsevier Ltd.
Source: Şakar‐Deliormanlı, A., Çelik, E., and Polat, M. (2008). Adsorption of anionic polyelectrolyte and comb polymers onto lead magnesium niobate. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 316(1-3), 202-209. doi:10.1016/j.colsurfa.2007.09.004
Abstract: This paper presents the results concerning the adsorption mechanism of polyacrylic acid (PAA) and polyacrylic acid/polyethylene oxide (PAA/PEO) comb polymer onto lead magnesium niobate (PMN) powders. In the study adsorption behavior of PAA and PAA/PEO onto PMN surface were determined in aqueous solutions and the influence of pH and ionic strength was investigated. Results showed that adsorption of PAA or PAA/PEO increased with decreasing pH of the suspensions. The increase in the ionic strength or the presence of divalent cations caused an increase in the adsorption of both polyelectrolytes. It was observed that the adsorption reaches a maximum when PAA is fully complexed in solution. On the other hand, the increase in the adsorption of PAA/PEO onto PMN in the presence of monovalent or divalent salt was attributed to the decrease in the electrostatic forces rather than complex formation with the divalent metal ions in solution. Turbidity measurements showed that there is no complex formation between the divalent metal ions and PAA/PEO comb polymers due to shielding effect of the PEO teeth.
URI: http://doi.org/10.1016/j.colsurfa.2007.09.004
http://hdl.handle.net/11147/2419
ISSN: 0927-7757
0927-7757
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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