Abstract
Effects of particle size, crystallinity and the amount of the structural water in kaolinites on their infrared spectra, were studied. The samples were ground in a vibrating ball-mill, and infrared and X-ray spectra, as well as thermal and specific surface area measurements, were taken on the initial and ground samples. Changes of the 3705-cm−1 infrared band intensity and of the absorbance ratio of the A 3630/A 3705-cm−1 bands were determined as a function of the grinding time. Correlation functions between the absorption ratio, calculated from the infrared spectra, and the average particle size, as well as between the amorphism, calculated from the X-ray spectra, and the average particle size, were obtained.
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Hlavay, J., Jonas, K., Elek, S. et al. Characterization of the Particle Size and the Crystallinity of Certain Minerals by Infrared Spectrophotometry and other Instrumental Methods—I. Investigations on Clay Minerals. Clays Clay Miner. 25, 451–456 (1977). https://doi.org/10.1346/CCMN.1977.0250611
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DOI: https://doi.org/10.1346/CCMN.1977.0250611