Surface Activities and Quantum Chemical Calculations for Different Synthesized Cationic Gemini Surfactants
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Omnia A. A. El-Shamy
Abstract
Three series of cationic gemini surfactants were prepared and characterized using elemental analysis and 1H-NMR spectroscopy. The surface properties of them, critical micelle concentration (CMC), surface excess concentration (Γmax) and minimum surface area per molecule (Amin) were evaluated via surface tension measurements. Quantum chemical parameters, such as the energy of the highest occupied molecular orbital (EH), the energy of the lowest unoccupied molecular orbital EL, the energy gap (ΔEg), dipole moment (μ), electronegativity (χ), hardness (η), electrophilicity (ω), hydrophobicity (Log P), approximated surface area (A) and the total energy of the optimized structure (ΔET), were theoretically calculated using the MNDO method.
Kurzfassung
Drei Reihen von kationischen Gemini-Tensiden wurden hergestellt und durch Elementaranalyse und 1H-NMR-Spektroskopie charakterisiert. Ihre Oberflächeneigenschaften, die kritische Mizellenbildungskonzentration (CMC), die Oberflächenüberschusskonzentration (Γmax) und der minimale Platzbedarf pro Molekül an der Oberfläche (Amin) wurden über Oberflächenspannungsmessungen berechnet. Quantenchemische Parameter, wie die Energie des höchsten besetzten Molekülorbitals (EH), die Energie des niedrigsten unbesetzten Molekülorbitals EL, die Energielücke (ΔEg), das Dipolmoment (μ), die Elektronegativität (χ), die Härte (η), die Elektrophilie (ω), die Hydrophobie (Log P), die angenäherte Oberfläche (A) und die Gesamtenergie der optimierten Struktur (ΔET) wurden nach der MNDO-Methode theoretisch berechnet.
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© 2017, Carl Hanser Publisher, Munich
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Detergents/Cleaning
- Application of Glycerin in Liquid Laundry Detergents as an Example of Innovation in the Household Chemicals Industry
- Application
- Characterization of Pyrene Solubilization in Selective Micellar Media of Novel Bio-degradable Natural Surfactant Saponin (Extracted from Soap Nut) and Conventional Surfactant SDBS in Presence and Absence of Common Salt NaCl
- The Effect of pH on the Properties of a Cationic Bitumen Emulsifier
- The Role of Fatty Acids Functional Group in Morinda citrifolia L. on Surface Tension and Diffusion Performance into Ink Particles
- Physical Chemistry
- Effect of Some Vitamins of Group B (B1, B6, B12) on Micellar and Viscosity Properties of Anionic, Cationic and Nonionic Surfactants in Aqueous Solutions
- Phase Behavior and Solubilization of Microemulsions Containing C16mimBr with Different Oil-Water Ratios
- Thermodynamics of Micellization, Interfacial Behavior and Wettability Alteration of Aqueous Solution of Nonionic Surfactants
- Novel Surfactants
- Synthesis and Properties of a Novel Gemini Surfactant with Bis-piperidinium
- Surface Activities and Quantum Chemical Calculations for Different Synthesized Cationic Gemini Surfactants
- Effect of Novel Surfactant on the Growth Kinetics of Cobalt Nanoparticles
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Detergents/Cleaning
- Application of Glycerin in Liquid Laundry Detergents as an Example of Innovation in the Household Chemicals Industry
- Application
- Characterization of Pyrene Solubilization in Selective Micellar Media of Novel Bio-degradable Natural Surfactant Saponin (Extracted from Soap Nut) and Conventional Surfactant SDBS in Presence and Absence of Common Salt NaCl
- The Effect of pH on the Properties of a Cationic Bitumen Emulsifier
- The Role of Fatty Acids Functional Group in Morinda citrifolia L. on Surface Tension and Diffusion Performance into Ink Particles
- Physical Chemistry
- Effect of Some Vitamins of Group B (B1, B6, B12) on Micellar and Viscosity Properties of Anionic, Cationic and Nonionic Surfactants in Aqueous Solutions
- Phase Behavior and Solubilization of Microemulsions Containing C16mimBr with Different Oil-Water Ratios
- Thermodynamics of Micellization, Interfacial Behavior and Wettability Alteration of Aqueous Solution of Nonionic Surfactants
- Novel Surfactants
- Synthesis and Properties of a Novel Gemini Surfactant with Bis-piperidinium
- Surface Activities and Quantum Chemical Calculations for Different Synthesized Cationic Gemini Surfactants
- Effect of Novel Surfactant on the Growth Kinetics of Cobalt Nanoparticles
