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HERO ID
5230909
Reference Type
Journal Article
Title
Preparation and evaluation of hydrophobically modified core shell calcium carbonate structure by different capping agents
Author(s)
Deepika; Hait, SK; Christopher, J; Chen, Y; Hodgson, P; Tuli, DK
Year
2013
Is Peer Reviewed?
Yes
Journal
Powder Technology
ISSN:
0032-5910
Volume
235
Page Numbers
581-589
DOI
10.1016/j.powtec.2012.11.015
Web of Science Id
WOS:000316039400073
Abstract
Surface modification of precipitated calcium carbonate particles in a planetary ball mill using different dispersants such as stearic acid, oleic acid, palmitic acid, salicylic acid, oleyl amine, DDSA (dodecenyl succinic anhydride), ODSA (octadecenyl succinic anhydride), TPSA (tetra propenyl succinic anhydride) as modification agent was done in order to find out the potential of dispersant in surface modification and for making dispersion in hydrocarbon oil was investigated. Different dispersants were ball milled keeping all the parameters for processing (milling) like milling time, ball ratios, sample dosage and milling constant. The physical properties of the hydrophobically modified calcium carbonate were measured; the particle size and morphology of the resulting samples were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The surface coating thickness was also estimated by geometric calculation using results of TEM and TGA considering the formation of core shell structure. (C) 2012 Elsevier B.V. All rights reserved.
Keywords
Calcium carbonate; Dispersants; Surface modification; Milling
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