Comparative study of water-based and acid-based sonications on structural changes of talc

Jamil, Noorina Hidayu and Palaniandy, Samayamutthirian (2011) Comparative study of water-based and acid-based sonications on structural changes of talc. Applied Clay Science, 51 4: 399-406.


Author Jamil, Noorina Hidayu
Palaniandy, Samayamutthirian
Title Comparative study of water-based and acid-based sonications on structural changes of talc
Journal name Applied Clay Science   Check publisher's open access policy
ISSN 0169-1317
1872-9053
Publication date 2011-03
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.clay.2010.12.006
Volume 51
Issue 4
Start page 399
End page 406
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Collection year 2012
Language eng
Formatted abstract Talc was sonicated in both water and acid media up to 100 h and 40 h, respectively. The sonicated talc exhibited severe delamination and reduction of the plate diameter in the lateral dimension. The density of sonicated particles was reduced to 1.64 g/cm3 when sonicated in acid for 40 h. Particles sonicated in the water medium also exhibited higher aspect ratios compared to those sonicated in the acid medium. The sonicated particles exhibited structural changes where the degree of crystallinity especially in (00l) planes were reduced; there were also decreases in crystallite size and increases in lattice strain for both media. Acid media sonication led to a lower degree of crystallinity compared to that in the water medium. The sonicated particles likewise exhibited shrinkage in lattice parameters for both media. Sonicated talc particles exhibited reduction of intensity for Mg–OH and OH stretching bands, but Si–O remained almost unaffected after 40 h. Besides that, talc sonicated in both medium exhibited reduction in density and acid based sonicated talc shows the lower density of about 1.64 g/cm3 due to leaching of magnesium.
Keyword Powder technology
Particle processing
Comminution
Industrial minerals
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ
Additional Notes Available online 21 December 2010

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Non HERDC
 
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Created: Tue, 22 Nov 2011, 14:00:39 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre