Control of calcium carbonate particle size and shape by precipitation from CTAB/alcohol/hexadecane mixtures

被引：18

作者：

Rock, ML ^{[1
]}

Tranchitella, LJ ^{[1
]}

Pilato, RS ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT CHEM & BIOCHEM,COLLEGE PK,MD 20742

来源：

COLLOID AND POLYMER SCIENCE | 1997年 / 275卷 / 09期

关键词：

monodispersed; calcium carbonate; precipitate; spheres; microemulsion;

D O I：

10.1007/s003960050163

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

When used as a precipitation media, emulsified mixtures of cetyltrimethylammonium bromide/n-butanol (E), hexadecane (O) and water (W), controls the size and shape of calcium carbonate particles. Monodisperse 2-micron spherical-calcite particles were obtained in a water-rich region of the mixture, while 2-micron rhombohedral-calcite particles with an aspect ratio near one were obtained in the middle region of the mixture. Replacing n-butanol with i-butanol led to consistent formation of monodisperse spherical particles, while using n-propanol in place of iz-butanol limited the number of spherical particles produced in the water-rich region.

引用

页码：893 / 896

页数：4

共 19 条

[1] A NEW FAMILY OF MESOPOROUS MOLECULAR-SIEVES PREPARED WITH LIQUID-CRYSTAL TEMPLATES [J].