Complex between cationic like-charged polyelectrolytes/surfactants systems
| Autor: | Tahar Othman, Adel Aschi, Joan J. Cerdà, Tomàs Sintes, Mohamed Arbi Bassalah |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission |
| Rok vydání: | 2017 |
| Předmět: |
Like-charge polymer complex
Materials science Polymers and Plastics Condensation point General Physics and Astronomy Salt (chemistry) 02 engineering and technology 010402 general chemistry 01 natural sciences Molecular dynamics Pulmonary surfactant Polymer blends Polymer chemistry Materials Chemistry Nanomaterials chemistry.chemical_classification Atomic force microscopy Organic Chemistry Condensation Cationic polymerization 021001 nanoscience & nanotechnology Polyelectrolyte 0104 chemical sciences chemistry Chemical engineering Adhesion 0210 nano-technology Simulation |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | We report for the first time the complex formation between cationic like-charged polyelectrolytes and surfactant systems. The mechanism of attraction has been investigated through extensive course-grained molecular dynamic simulations and atomic force microscopy (AFM) experiments. The addition of a tetravalent salt is found to play a crucial role in the polyelectrolyte backbone properties. We found extended structures at low and high salt concentration values, whereas, for intermediate ones, the chains condensate. The combination of elements with the same charge has been investigated in three different regimes depending on the tetrasalt concentration: before condensation; at the condensation point and during the re-expansion. The mixture of polyelectrolytes and surfactants in salt free is also studied and compared to the mixture in a tetrasalt solution. TS acknowledge financial support from Ministerio de Economía y Competitividad and Fondo Europeo de Desarrollo Regional, Project No. FIS20015-63628-C2-2-R (AEI/FEDER,UE). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|