Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 341, Issue 2, Pages 298-302Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2009.09.048
Keywords
Calcium; Carbonate; Slurry; Infrared; Polyacrylate; Carboxylate; Adsorption; Solids; ATR-FTIR
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Funding
- Kemira Chemicals, Inc.
- Imerys Clays, Inc.
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The adsorption of sodium polyacrylate (NaPAA) in slurries with up to 75 wt.% calcium carbonate was investigated with the use of attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) and adsorption of probe molecules. Analysis of the IR spectra demonstrated that the carboxylate groups of NaPAA adsorbed onto ground calcium carbonate (GCC) in three different modes. These modes were shown to be dependent on the solids loading and age of the slurry. Further investigation lead to the determination of the chelating ability of NaPAA at high solids loading. (C) 2009 Elsevier Inc. All rights reserved.
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