Mixed Micellization Behavior of Gemini (Cationic Ester-Bonded) Surfactants with Conventional (Cationic, Anionic and Nonionic) Surfactants in Aqueous Medium
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Nazish Fatma
Abstract
Two cationic ester-bonded cleavable gemini surfactants of different hydrophobic chain length ethane-1,2-diyl bis(N,N-dimethyl-N-alkylammoniumacetoxy)dichloride, CnH2n+1(CH3)2N+(CH2COOCH2)2N+(CH3)2CnH2n+1. 2Cl- (n-E2-n, n=12, 16), having ester linkage in the spacer, were synthesized adopting the reported procedure. Physicochemical properties of the single and binary gemini-conventional mixed micelles of different mole fractions were studied by conductivity measurements at 30 ºC. The conventional surfactants used were: DTAC (dodecyltrimethylammonium chloride), CTAC (hexadecyltrimethylammonium chloride), CPC (cetylpyridinium chloride), SDS (sodium dodecyl sulfate), SDBS (sodium dodecylbenzene sulfonate), TX-100 (t-octylphenoxypolyethoxyethanol) and Brij 58 (polyoxyethylene (20) cetyl ether). Whereas the critical micelle concentration (cmc) values for the dicationic geminis (12-E2-12 and 16-E2-16) were found to be very low as compared to the respective monomeric surfactant with the same number of carbon atoms in the hydrophobic chain per hydrophilic head group, those for all the binary systems were found to be less than the ideal cmc values studied at different mole fractions of the geminis. This synergistic interaction between the surfactants has been analyzed in the light of various theoretical models such as Clint, Rubingh, Motomura and Maeda.
© by Oldenbourg Wissenschaftsverlag, München, Germany
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- Broadband Rotational Spectroscopy for Molecular Structure and Dynamics Studies
- Gas-phase-IR and Solid-State Raman Investigation of Paracyclophanes
- On Ligand Binding Energies in Porphyrinic Systems
- Cyclodextrin Inclusion Interferes with Trolox Oxygen Radical Scavenging Capacity Measurement
- Degradation of Lithium Ion Batteries under Complex Conditions of Use
- Electrochemical Oxidation and Determination of Nimesulide Using a Carbon Paste Electrode
- Characteristics and Electrochemical Reaction Kinetics of Polyaniline Nanofibers as a Promoter of Pt Electrode for Methanol Electrocatalytic Oxidation
- Cyclic Voltammetric Study of Heterogeneous Electron Transfer Rate Constants of Various Organic Compounds in Ionic liquids: Measurements at Room Temperature
- Mixed Micellization Behavior of Gemini (Cationic Ester-Bonded) Surfactants with Conventional (Cationic, Anionic and Nonionic) Surfactants in Aqueous Medium
Artikel in diesem Heft
- Mixed Micellization Behavior of Gemini (Cationic Ester-Bonded) Surfactants with Conventional (Cationic, Anionic and Nonionic) Surfactants in Aqueous Medium
- Broadband Rotational Spectroscopy for Molecular Structure and Dynamics Studies
- Gas-phase-IR and Solid-State Raman Investigation of Paracyclophanes
- On Ligand Binding Energies in Porphyrinic Systems
- Cyclodextrin Inclusion Interferes with Trolox Oxygen Radical Scavenging Capacity Measurement
- Degradation of Lithium Ion Batteries under Complex Conditions of Use
- Electrochemical Oxidation and Determination of Nimesulide Using a Carbon Paste Electrode
- Characteristics and Electrochemical Reaction Kinetics of Polyaniline Nanofibers as a Promoter of Pt Electrode for Methanol Electrocatalytic Oxidation
- Cyclic Voltammetric Study of Heterogeneous Electron Transfer Rate Constants of Various Organic Compounds in Ionic liquids: Measurements at Room Temperature
- Mixed Micellization Behavior of Gemini (Cationic Ester-Bonded) Surfactants with Conventional (Cationic, Anionic and Nonionic) Surfactants in Aqueous Medium
