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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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Schillén, Karin
Lund University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2017Mixed micelles of oppositely charged poly(N-isopropylacrylamide) diblock copolymerscitations
- 2012Nanoparticles with a Bicontinuous Cubic Internal Structure Formed by Cationic and Non-ionic Surfactants and an Anionic Polyelectrolyte.citations
- 2006Supramolecular aggregates of amphiphilic gadolinium complexes as blood pool MRI/MRA contrast agents: Physicochemical characterizationcitations
- 2006Supramolecular aggregates of amphiphilic gadolinium complexes as blood pool MRI/MRA contrast agents: physicochemical characterization.citations
- 2002Influence of Ionic Surfactants on the Aggregation of Poly(Ethylene Oxide)−Poly(Propylene Oxide)−Poly(Ethylene Oxide) Block Copolymers Studied by Differential Scanning and Isothermal Titration Calorimetrycitations
- 2002Influence of ionic surfactants on the aggregation of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymers studied by differential scanning and isothermal titration calorimetrycitations
- 2001Lipid-Block Copolymer-Immiscibilitycitations
Places of action
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article
Influence of Ionic Surfactants on the Aggregation of Poly(Ethylene Oxide)−Poly(Propylene Oxide)−Poly(Ethylene Oxide) Block Copolymers Studied by Differential Scanning and Isothermal Titration Calorimetry
Abstract
The interaction between three triblock copolymers of poly(ethylene oxide) and poly(propylene oxide), EOnPOmEOn, and the ionic surfactants sodium dodecyl sulfate, SDS, and hexadecyltrimethylammonium chloride, CTAC, has been studied in dilute aqueous solution using differential scanning calorimetry, DSC, and isothermal titration calorimetry. The length of the PPO block was the same in all three copolymers (68−69 PO units), and the lengths of the PEO groups varied from 5, 20 and 97 EO units. The copolymers are denoted L121, P123, and F127 in order of increasing PEO block size. In dilute aqueous solution P123 and F127 aggregate to form micelles, while the most hydrophobic polymer, L121, forms aggregates which, eventually, separate to give a liquid crystalline phase. Differential scanning calorimetry was used to follow the effect on the copolymer aggregates upon addition of ionic surfactants. Addition of SDS to P123 and L121 increased the temperature for aggregation, but polymer aggregates still formed in 6.2 ...