Micellization of Pentanediyl-1,5-bis(hydroxyethylmethyl hexadecylammonium Bromide) as a Cationic Gemini Surfactant in Aqueous Solutions: Investigation Using Conductometry and Fluorescence Techniques |
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Authors: | R Zarganian A K Bordbar R Amiri M Tamannaei A R Khosropour I Mohammadpoor-Baltork |
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Institution: | (1) Department of Materials Science and Engineering, Tianjin Institute of Urban Construction, 300384 Tianjin, People’s Republic of China;(2) Department of Chemistry, School of Science, Tianjin University, 300072 Tianjin, People’s Republic of China; |
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Abstract: | Pentanediyl-1,5-bis (hydroxyethylmethylhexadecylammonium bromide) was synthesized and characterized as a type of novel gemini
cationic surfactant. Its solution properties were determined at various temperatures by conductivity measurements and the
fluorescence quenching technique. The CMC increased in the range of 1.85 to 2.77 μmol⋅L−1 as the temperature increased. The aggregation number was determined at various concentrations of NaBr solutions by the fluorescence
quenching of pyrene. The thermodynamic parameters of micellization were determined using the mass law equation and the values
of ΔG °, ΔH °and ΔS ° were determined for the micellization process. |
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