Stabilization of carbon black particles with Cetyltrimethylammoniumbromide in aqueous media

被引：26

作者：

Eisermann, C. ^{[1
]}

Damm, C. ^{[1
]}

Winzer, B. ^{[1
]}

Peukert, W. ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Inst Particle Technol LFG, D-91058 Erlangen, Germany

来源：

POWDER TECHNOLOGY | 2014年 / 253卷

关键词：

Carbon black; Dispersion; Electrosteric stabilization; CTAB adsorption; DLVO calculations; AGGREGATE PROPERTIES; SUSPENSION RHEOLOGY; CATIONIC SURFACTANT; FORCE MICROSCOPY; ADSORPTION; SILICA; BROMIDE; CTAB; SULFATE;

D O I：

10.1016/j.powtec.2013.11.051

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The stabilization mechanism of aqueous carbon black suspensions by Cetyltrimethylammoniumbromide (CTAB) is studied in this paper. The adsorption of the surfactant CTAB on the carbon black particles was investigated on dried samples by thermogravimetric analyses (TGA), nitrogen adsorption and attenuated total reflection Fourier transformation infrared spectroscopy (ATR-FTIR) as well as in suspension by zeta potential measurements and atomic force microscopy. The particles are stabilized by an adsorbed CTAB monolayer as can be concluded from the results of TGA and of AFM investigations using a liquid cell. Extended DLVO calculations including the steric contribution of CTAB reveal that carbon particles with an adsorbed monolayer of CTAB exhibit sufficient colloidal stability. This result is in qualitative agreement with the experimental results. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：338 / 346

页数：9

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