Tensiometric and rheological investigations of single and mixed systems consisting of cocamidopropyl betaine (CAPB) and sodium dodecyl benzene sulfonate (SDBS) in aqueous solutions

Rami A. Abdel-Rahem; Faisal Al-Akayleh; Mayyas Al-Remawi

doi:10.1515/tsd-2022-2492

Article

Tensiometric and rheological investigations of single and mixed systems consisting of cocamidopropyl betaine (CAPB) and sodium dodecyl benzene sulfonate (SDBS) in aqueous solutions

Rami A. Abdel-Rahem
Rami A. Abdel-Rahem was born in 1974 (in As Sarih-Jordan), studied applied chemistry at Jordan University of Science and Technology. He obtained his PhD in 2003 from Bayreuth University (Germany) under supervision of Prof. Dr. Heinz Hoffmann. From 2003 until 2011, he worked as assistant professor of physical chemistry at the university of Al-Margeb (Libya) and at King Faisal University (Saudi Arabia). At 2011, he was promoted to an associate professor at King Faisal University. At 2013, he shifted to University of Petra (Jordan) and there he was promoted to a full professor at 2017. Areas of interest are surfactants properties, rheology, electron microscopy, phase behavior, corrosion, and physical properties of polymer composite.
, Faisal Al-Akayleh
Faisal Al-Akayleh studied pharmacy at Jordan University. He obtained his master in 1998 and PhD in physical pharmacy from University of Baghdad (Iraq) in 2004. In 2008 he worked as assistant professor at the University of Petra (Jordan) and was promoted to an associate professor of pharmacy in 2017. Areas of interest are nanotechnology, drug delivery systems, eutectic systems, pharmaceutical additives and formulations.
and Mayyas Al-Remawi
Mayyas Al-Remawi was born in 1971, studied pharmacy at Jordan University. He obtained his master in 1998 and PhD in physical pharmacy from Jordan University of Science and Technology (JUST) in 2003. He worked in pharmaceutical industry sector from 2003 till 2010, then he joined Taif University (Kingdom of Saudi Arabia) and worked there as assistant professor of pharmacy till 2012. At 2013, he was promoted to associate professor at the same University. In 2015 he moved to university of Petra (Jordan) and was promoted to a full professor of pharmacy in 2017. Prof. Al-Remawi has about 32 inventions and about 55 journal publications. Areas of interest are nanotechnology, drug delivery systems, pharmaceutical additives and formulations.

Published/Copyright: March 27, 2023

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From the journal Tenside Surfactants Detergents Volume 60 Issue 3

Abstract

The surface tension (σ), critical micelle concentration (CMC), surface excess (Γ), minimum area occupied by a surfactant molecule (A_min), the viscosity and oscillatory rheological studies of aqueous solutions containing cocamidopropyl betaine (CAPB) and sodium dodecylbenzene sulfonate (SDBS) at molar fractions of 0.00, 0.25, 0.50, 0.75 and 1.00 and 25 °C were presented. CAPB and SDBS were not found to interact synergistically in water at any of the molar fractions studied. This is due to the fact that the critical micelle concentrations of these mixtures were higher than those predicted by Clint’s equation, indicating an antagonism that rarely occurs in mixed amphoteric/anionic surfactant systems. The minimum area occupied by a surfactant molecule (A_min) was reduced in CAPB/SDBS mixtures compared to unmixed surfactants. In contrast, the viscosity of the mixed CAPB/SDBS system increased significantly from 1.0 mPa s to a maximum of 36.0 Pa s at higher CAPB mole fractions (0.5–0.8). The rheograms obtained from the oscillation measurements of the viscous CAPB/SDBS solutions are characteristic of wormlike micelles (WLMs) according to the Maxwell model. The results of this surprising binary CAPB/SDBS surfactant mixing system are presented and discussed.

Keywords: cocamidopropyl betaine; rheology; sodium dodecyl benzene sulfonate; surface tension; wormlike micelle (WLM)

Corresponding author: Rami A. Abdel-Rahem, Department of Chemistry, College of Arts and Sciences, University of Petra, Amman 11196, Jordan, E-mail: rabdelrahem@uop.edu.jo

About the authors

Rami A. Abdel-Rahem

Rami A. Abdel-Rahem was born in 1974 (in As Sarih-Jordan), studied applied chemistry at Jordan University of Science and Technology. He obtained his PhD in 2003 from Bayreuth University (Germany) under supervision of Prof. Dr. Heinz Hoffmann. From 2003 until 2011, he worked as assistant professor of physical chemistry at the university of Al-Margeb (Libya) and at King Faisal University (Saudi Arabia). At 2011, he was promoted to an associate professor at King Faisal University. At 2013, he shifted to University of Petra (Jordan) and there he was promoted to a full professor at 2017. Areas of interest are surfactants properties, rheology, electron microscopy, phase behavior, corrosion, and physical properties of polymer composite.

Faisal Al-Akayleh

Faisal Al-Akayleh studied pharmacy at Jordan University. He obtained his master in 1998 and PhD in physical pharmacy from University of Baghdad (Iraq) in 2004. In 2008 he worked as assistant professor at the University of Petra (Jordan) and was promoted to an associate professor of pharmacy in 2017. Areas of interest are nanotechnology, drug delivery systems, eutectic systems, pharmaceutical additives and formulations.

Mayyas Al-Remawi

Mayyas Al-Remawi was born in 1971, studied pharmacy at Jordan University. He obtained his master in 1998 and PhD in physical pharmacy from Jordan University of Science and Technology (JUST) in 2003. He worked in pharmaceutical industry sector from 2003 till 2010, then he joined Taif University (Kingdom of Saudi Arabia) and worked there as assistant professor of pharmacy till 2012. At 2013, he was promoted to associate professor at the same University. In 2015 he moved to university of Petra (Jordan) and was promoted to a full professor of pharmacy in 2017. Prof. Al-Remawi has about 32 inventions and about 55 journal publications. Areas of interest are nanotechnology, drug delivery systems, pharmaceutical additives and formulations.

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: The authors acknowledge Faculty of Scientific Research at the University of Petra for supporting the researchers through project number 1/1/2022.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-10-31

Accepted: 2023-01-05

Published Online: 2023-03-27

Published in Print: 2023-05-25

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https://doi.org/10.1515/tsd-2022-2492

Keywords for this article

cocamidopropyl betaine; rheology; sodium dodecyl benzene sulfonate; surface tension; wormlike micelle (WLM)