Evaluation of the particle sizes of four clay minerals

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• 作者：Xiaoling Tan^a ; Fengyin Liu^a ; ^b ; Liming Hu^c ; Allen H. Reed^d ; Yoko Furukawa^d ; Guoping Zhang^e ; ^{zhangg@umass.edu} ; ^{gzhang@alum.mit.edu}
• 关键词：Clay mineral ; Dispersion ; Exfoliation ; Floc ; Flocculus ; Particle size distribution
• 刊名：Applied Clay Science
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：135
• 期：Complete
• 页码：313-324
• 全文大小：1555 K
• 卷排序：135

文摘

Particle sizes of kaolinite, illite, Ca2 +-/Na+-montmorillonite were studied. Clay dispersions show trimodal PSD: primary particles (< 0.5, 1–2 μm), flocculi (~ 20 μm). Flocculi are resistant to disaggregation and hence counted in silt-sized fraction. Effect of different dispersion methods (e.g. ultrasound, dispersant) varies. A less polar solvent (e.g. alcohol) is needed for analyzing the PSD of swelling minerals.