光谱学与光谱分析 |
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Study on the Reaction Mechanism of Surface Modified Nano-CaCO3 Particles Using w-Undecenoic Acids as Modifier by FTIR Difference Spectroscopy |
CHU Yan-hong1,2,ZHANG Guo-bao2,ZHAO Gen-suo2,YU Shou-zhi2,WANG Jing-wu1*,LI Bin-jie3 |
1. College of Material Science and Engineering,Zhengzhou University,Zhengzhou 450052,China 2. Research Center of Quality Inspection and Analysis-Testing,Henan Academy of Sciences,Zhengzhou 450002,China 3. Henan University,Kaifeng 475002,China |
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Abstract The components of the surface modified nanometer calcium carbonate particles with w-undecenoic acids as modifier were tested by differential FTIR spectroscopy. Some special absorption bands respectively assigned to (RCOO)2-Ca,γC—CH,νC—CH,νRCOOR,νRCOOH at the wavenumbers of 1 572,1 542,912,3 078 cm-1,1 746 and 1 703 cm-1 were found. The possible modification mechanisms is that the organic acid reacts with the exposed Ca2+ of the nano-CaCO3 surface to form ion-bond (RCOO)2Ca;and the other organic groups are absorbed onto the surface of nano-CaCO3 by hydrogen-bond. These organic groups twist on the surface of nano-CaCO3 particles. So the dispersion of the modified nano-CaCO3 particles is increased remarkably in absolute ethanol.
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Received: 2006-06-28
Accepted: 2006-09-28
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Corresponding Authors:
WANG Jing-wu
E-mail: jingwuwang@zzu.edu.cn
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Cite this article: |
CHU Yan-hong,ZHANG Guo-bao,ZHAO Gen-suo, et al. Study on the Reaction Mechanism of Surface Modified Nano-CaCO3 Particles Using w-Undecenoic Acids as Modifier by FTIR Difference Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(08): 1510-1513.
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URL: |
https://www.gpxygpfx.com/EN/Y2007/V27/I08/1510 |
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