Preparation and evaluation of hydrophobically modified core shell calcium carbonate structure by different capping agents

被引：29

作者：

Deepika ^{[1
,2
]}

Hait, S. K. ^{[1
]}

Christopher, J. ^{[1
]}

Chen, Y. ^{[2
]}

Hodgson, P. ^{[2
]}

Tuli, D. K. ^{[1
]}

机构：

[1] Indian Oil Corp Ltd, R&D Ctr, Sect 13, Faridabad 121007, Haryana, India

[2] Deakin Univ, Inst Frontier Mat, Waurn Ponds, Vic 3216, Australia

来源：

POWDER TECHNOLOGY | 2013年 / 235卷

关键词：

Calcium carbonate; Dispersants; Surface modification; Milling; CACO3; NANOPARTICLES; OLEIC-ACID; NANOCOMPOSITES; DISPERSION; POWDER; ROUTE;

D O I：

10.1016/j.powtec.2012.11.015

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

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.

引用

页码：581 / 589

页数：9

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