Abstract
The effect of the ionic liquid analogue tetrabutylammonium bromide on the aggregation behaviour of the cationic surfactant dodecyltrimethylammonium bromide in aqueous medium was investigated with volumetric and compressibility measurements over a wide temperature range (293.15–313.15) K. The data obtained were used to obtain density data. Based on the density data obtained, the volumetric properties (apparent molar volumes and partial molar volumes) of the surfactant in unimeric and micellar forms were evaluated and discussed in terms of the respective ionic and dipolar interactions. The data obtained were analysed to determine the effects of (i) temperature and (ii) salt added to the surfactant. The results were also interpreted in terms of the molecular interactions occurring in the binary mixtures of the present study. The addition of tetrabutylammonium bromide has a lowering effect on the CMC values of the surfactant studied in aqueous medium.
About the authors
Hossein Hooshyar is a professor of physical chemistry in the department of Chemistry at Mahabad Branch, where he has been since 2005. From 2016 to 2021 he education director of University and Director of Teaching Department. He received a B.S., M.S. and Ph.D. in Physical Chemistry in 2000, 2006 and 2015 respectively. His research interests span both theoretical chemistry and experimental science in thermodynamic studies. He was selected as a higher researcher of Islamic Azad University, Mahabad, 2008 and 2009.
Rahmat Sadeghi was born in Marivan, Kurdistan, Iran. He got his B.Sc degree in Chemistry at University of Kurdistan in 1997. He studied Thermodynamics of Solutions at Tabriz University. There he got his M.Sc and PhD in Physical Chemistry in 2000 and 2004, respectively. He has been working at the University of Kurdistan as an academic member in department of chemistry since 2004 where he created a research group. In 2008 he received a research grant award from elite national foundation (Bonyad Melli Nokhbegan) for young assistant professor and in 2015 was selected as the eminent professor of physical chemistry of iran by the Iranian Chemical Society. He has also selected as a higher researcher of University of Kurdistan in different years. Prof. Sadeghi has been selected as a member of the Physical Chemistry Committee of the Iranian Chemical Society for two terms (2015–2017 and 2018–2020). Currently, Prof. Sadeghi is the head of the Elites Foundation of Kurdistan Province.
Acknowledgment
The authors are thankful to department of chemistry, university of Kurdistan, Sanandaj, Iran for their kind support in the present research work.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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