Adsorption of sodium polyacrylate in high solids loading calcium carbonate slurries

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• 作者：Joshua J. Taylor ; Wolfgang M. Sigmund
• 关键词：Calcium ; Carbonate ; Slurry ; Infrared ; Polyacrylate ; Carboxylate ; Adsorption ; Solids ; ATR-FTIR
• 刊名：Journal of Colloid and Interface Science
• 出版年：2010
• 出版时间：15 January 2010
• 年：2010
• 卷：341
• 期：2
• 页码：298-302
• 全文大小：409 K

文摘

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.