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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Richardson, Robert M.
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2021Dendritic Micelles with Controlled Branching and Sensor Applicationscitations
- 2020Interactions between PAMAM dendrimers and DOPC lipid multilayerscitations
- 2020Interactions between PAMAM dendrimers and DOPC lipid multilayers:Membrane thinning and structural disordercitations
- 2018Structure of the Crystalline Core of Fiber-like Polythiophene Block Copolymer Micellescitations
- 2018High Stiffness Cellulose Fibers from Low Molecular Weight Microcrystalline Cellulose Solutions Using DMSO as Co-Solvent with Ionic Liquidcitations
- 2016“Cross” Supermicelles via the Hierarchical Assembly of Amphiphilic Cylindrical Triblock Comicellescitations
- 2016Blocked Shape Memory Effect in Negative Poisson's Ratio Polymer Metamaterialscitations
- 2015Self-assembly of a functional oligo(aniline)-based amphiphile into helical conductive nanowirescitations
- 2013The influence of suspended nano-particles on the frederiks threshold of the nematic host
- 2013The solution phase characterization of poly(ferrocenyldimethylsilane)s by small-angle neutron scatteringcitations
- 2013The influence of suspended nanoparticles on the Frederiks threshold of the nematic hostcitations
- 2013Electro-induced orientational ordering of anisotropic pigment nanoparticlescitations
- 2011Liquid-crystalline symmetric triblock copolymers
- 2011Probing the Structure of the Crystalline Core of Field-Aligned, Monodisperse, Cylindrical Polyisoprene-block-Polyferrocenylsilane Micelles in Solution Using Synchrotron Small- and Wide-Angle X-ray Scatteringcitations
- 2009Not All Anionic Polyelectrolytes Complex with DTAB
- 2001Carbosilane liquid crystalline dendrimers with terminal chiral mesogenic groupscitations
- 2001Polymerization of cationic surfactant phasescitations
Places of action
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article
Polymerization of cationic surfactant phases
Abstract
Mixtures of polymerizable surfactants have been employed to select control over interfacial curvature and phase structure, in aqueous micelles, lyotropic mesophases, and water-in-oil microemulsions. These surfactants were 11-(methacryloyloxy)undecyltrimethylammonium bromide (A), dodecyl(11-(methacryloyloxy)undecyl)dimethylammonium bromide (B), and cetyltrimethylammonium 4-vinylbenzoate (C). The single chain A and double chain B have reactive hydrophobic chain tips, whereas the single chain C possesses a polymerizable vinyl benzoate hydrophilic counterion. Aqueous micelles, composed of mixtures of these surfactants, can be polymerized to yield single-phase, stable solutions. Polymerization was confirmed by disappearance of characteristic vinyl signals in the 1 H NMR spectra, and line broadening, as would be expected in polymerized micelles. Furthermore, small-angle neutron scattering (SANS) indicates that micelle structures were broadly retained after polymerization. SANS has shown that these polymerized structures persist below the critical micelle concentration of the nonpolymerized system. With lyotropic mesophases, polarizing light microscopy coupled with SAXS indicates retention of the lamellar (L α ) phase after polymerization and, for hexagonal (H 1 ) phases, evidence for long-range order in the polymerized sample. Finally, films in water-in-oil microemulsions composed of A and B surfactant mixtures were also studied. After polymerization, NMR indicated around 35% conversion to the surface-active polymer. SANS showed that the droplet size may be tuned by film composition and that the parent droplet structure was retained after polymerization. Mixtures of polymerizable surfactants have been employed to select control over interfacial curvature and phase structure, in aqueous micelles, lyotropic mesophases, and water-in-oil microemulsions. These surfactants were 11-(methacryloyloxy)undecyltrimethylammonium bromide (A), dodecyl(11-(methacryloyloxy)undecyl)dimethylammonium bromide (B), and ...