SURFACE MODIFICATION OF CaCO3 WITH DENDRITIC CARBOXYLIC ACIDS*

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SURFACE MODIFICATION OF CaCO3 WITH DENDRITIC CARBOXYLIC ACIDS*

Papers | Updated：2021-06-21

- SURFACE MODIFICATION OF CaCO3 WITH DENDRITIC CARBOXYLIC ACIDS*
- Vol. 20, Issue 3, Pages: 231-235(2002)
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- Published：20 June 2002
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SURFACE MODIFICATION OF CaCO3 WITH DENDRITIC CARBOXYLIC ACIDS*[J]. 2002, 20(3): 231-235.
DOI：

SURFACE MODIFICATION OF CaCO3 WITH DENDRITIC CARBOXYLIC ACIDS*[J]. 2002, 20(3): 231-235. DOI：

摘要

Nanometer calcium carbonate was modified with Frechet type polyether dendrons bearing a COOH group at thefocal point by a wet-coating technique in dichloromethane at room temperature. The interaction between CaCO3 and thedendritic modifier was proven by IR and mass spectroscopy of the modified CaCO3 after thorough extraction withdichloromethane. The amount of tightly bonded organic modifier was estimated by TGA. It was shown that the amount ofbonded molecules decreased with increasing generation number due to the larger number of branches.Compared to unmodified CaCO3

the modified CaCO3 possess different dispersibility in water and in organic solvents.

Abstract

the modified CaCO3 possess different dispersibility in water and in organic solvents.

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