Journal of Surface Science and Technology

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Hemimicellization


Affiliations
1 Laboratory of Surface and Colloid Chemistry, Department of Chemistry and Institute of Physical Chemistry, Peking University, Beijing, China
     

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The literature on surface micellization or hemimicellization of surfactants at oxide/water interface is reviewed briefly. The adsorption model of cationic surfactant at silica/water interface is described, and a recently proposed approach is introduced which allows determination of nhm the average aggregation number of surfactant ions in a hemimicelle from the adsorption isotherm. The thermodynamics of hemimicelle formation is described which also allows to evaluate the nhm, as well as the free energy of hemimicellization from the adsorption of isotherms.

Keywords

Hemimicelle, Surfactant, adsorption, Aggregation Number, Thermodynamics.
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  • Hemimicellization

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Authors

Tiren Gu
Laboratory of Surface and Colloid Chemistry, Department of Chemistry and Institute of Physical Chemistry, Peking University, Beijing, China
Yueying Gao
Laboratory of Surface and Colloid Chemistry, Department of Chemistry and Institute of Physical Chemistry, Peking University, Beijing, China
Zhi Huang
Laboratory of Surface and Colloid Chemistry, Department of Chemistry and Institute of Physical Chemistry, Peking University, Beijing, China

Abstract


The literature on surface micellization or hemimicellization of surfactants at oxide/water interface is reviewed briefly. The adsorption model of cationic surfactant at silica/water interface is described, and a recently proposed approach is introduced which allows determination of nhm the average aggregation number of surfactant ions in a hemimicelle from the adsorption isotherm. The thermodynamics of hemimicelle formation is described which also allows to evaluate the nhm, as well as the free energy of hemimicellization from the adsorption of isotherms.

Keywords


Hemimicelle, Surfactant, adsorption, Aggregation Number, Thermodynamics.