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Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
Published on: June 8, 2016
Salt-induced viscoelastic wormlike micelles formed in surface active ionic liquid aqueous solution.
Bin Dong1, Jin Zhang, Liqiang Zheng
1Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, PR China.
Journal of Colloid and Interface Science
|December 14, 2007
Summary
This study shows that adding sodium tosylate to 1-hexadecyl-3-methylimidazolium bromide forms wormlike micelles and networks. These structures have potential applications in various industries.
Area of Science:
- Physical Chemistry
- Materials Science
- Colloid and Surface Chemistry
Background:
- Surface active ionic liquids (SAILs) are emerging as versatile alternatives to conventional surfactants.
- Understanding the self-assembly behavior of SAILs in aqueous solutions is crucial for their application.
- The addition of salts can significantly influence micellar structure and properties.
Purpose of the Study:
- To investigate the growth and structure of aqueous micellar solutions of 1-hexadecyl-3-methylimidazolium bromide (C16mimBr).
- To explore the effect of sodium tosylate (NaTos) on the self-assembly of C16mimBr.
- To confirm the formation of specific micellar structures using advanced imaging techniques.
Main Methods:
- Rheological measurements, including zero-shear viscosity and dynamic moduli.
- Application of the Cox-Merz empirical rule and Cole-Cole plots for structural analysis.
- Freeze-fracture transmission electron microscopy (FF-TEM) for direct visualization of micellar structures.
Main Results:
- Formation of wormlike micelles and network structures in C16mimBr/NaTos aqueous solutions.
- Rheological data indicated characteristics of entangled polymer-like systems.
- FF-TEM images provided direct evidence for the existence of wormlike micelles.
Conclusions:
- Aqueous solutions of C16mimBr with NaTos can form complex micellar architectures, including wormlike micelles.
- The observed structures are comparable to those found in conventional surfactant/salt systems.
- These findings suggest potential applications for SAILs in areas like home care, oilfield fluids, and nanobiotechnology.
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