Determination of the carbon black surface free energy components from the heat of immersion measurements

被引：48

作者：

GonzalezMartin, ML ^{[1
]}

Janczuk, B ^{[1
]}

LabajosBroncano, L ^{[1
]}

Bruque, JM ^{[1
]}

机构：

[1] UNIV EXTREMADURA, DEPT FIS, E-06071 BADAJOZ, SPAIN

来源：

LANGMUIR | 1997年 / 13卷 / 22期

关键词：

D O I：

10.1021/la9621224

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A carbonaceous material (Black Pearls 2000) was used for measurements of heat of immersion in water, formamide, n-dodecane, benzene, bromoform, and diiodomethane. Using the values obtained and the adsorption data from the literature, the Lifshitz-van der Waals component and the electron-acceptor and electron-donor parameters of the acid-base component of the surface free energy of the carbon black have been determined. The surface free energy of carbon black was found to result mainly from Lifshitz-van der Waals intermolecular interactions; however, it can interact with an adherent medium also by acid-base forces. The electron-acceptor parameter of the carbon black surface free energy is higher than zero, but the electron-donor parameter is close to zero. It was also found that the surface free energy of carbon black has a high value close to that for graphite.

引用

页码：5991 / 5994

页数：4

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