| People | Locations | Statistics |
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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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Santos, Lmnbf
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2023Confined Silver Nanoparticles in Ionic Liquid Filmscitations
- 2022Ohmic heating-assisted synthesis and characterization of Zn(ii), Cu(ii) and Pd(ii) complexes of heterocyclic-fused chlorinscitations
- 2022The impact of the cation alkyl chain length on the wettability of alkylimidazolium-based ionic liquids at the nanoscalecitations
- 2022Extensive characterization of choline chloride and its solid-liquid equilibrium with watercitations
- 2022Enthalpy of solvation of alkali metal salts in a protic ionic liquid: Effect of cation charge and sizecitations
- 2022Solid-Liquid-Gas Phase Equilibria for Small Phenylene-Thiophene Co-Oligomerscitations
- 2022The effect of oxidation state and tert-butyl substituents on the thermal behavior and thin-film morphology of cobalt-complexes (FK 102 and FK 209)citations
- 2021On the Aromatic Stabilization of Fused Polycyclic Aromatic Hydrocarbonscitations
- 2020Morphology, Structure, and Dynamics of Pentacene Thin Films and Their Nanocomposites with [C(2)C(1)im][NTf2] and [C(2)C(1)im][OTF] Ionic Liquidscitations
- 2019Synthesis of Pyridyl and N-Methylpyridinium Analogues of Rosamines: Relevance of Solvent and Charge on Their Photophysical Propertiescitations
- 2019Oxidative Treatment of Multi-Walled Carbon Nanotubes and its Effect on the Mechanical and Electrical Properties of Green Epoxy based Nano-Compositescitations
- 2018High purity and crystalline thin films of methylammonium lead iodide perovskites by a vapor deposition approachcitations
- 2018Thin film deposition of organic hole transporting materials: optical, thermodynamic and morphological properties of naphthyl-substituted benzidinescitations
- 2018Nucleation and growth of microdroplets of ionic liquids deposited by physical vapor method onto different surfacescitations
- 2017On the Deposition of Lead Halide Perovskite Precursors by Physical Vapor Methodcitations
- 2016Morphology of Imidazolium-Based Ionic Liquids as Deposited by Vapor Deposition: Micro-/Nanodroplets and Thin Filmscitations
- 2016The effect of n vs. iso isomerization on the thermophysical properties of aromatic and non-aromatic ionic liquidscitations
- 2015Description and Test of a New Multilayer Thin Film Vapor Deposition Apparatus for Organic Semiconductor Materialscitations
- 2007Thermochemical studies of five crystalline bis(O-alkyl-N-thenoylthiocarbamato)nickel(II) complexescitations
- 2004Standard molar enthalpies of formation of two crystalline bis[N-(diethylaminothiocarbonyl)benzamidinato]nickel(II) complexescitations
- 2004Standard molar enthalpies of formation of two crystalline bis[N-(diethylaminothiocarbonyl)benzamidinato]nickel(II) complexescitations
- 2004Thermodynamics of the interaction between a hydrophobically modified polyelectrolyte and sodium dodecyl sulfate in aqueous solutioncitations
- 2004Thermochemical studies of three bis(O-alkyl-N-benzoylthiocarbamato)nickel(II) complexescitations
Places of action
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article
Thermodynamics of the interaction between a hydrophobically modified polyelectrolyte and sodium dodecyl sulfate in aqueous solution
Abstract
The thermodynamics of the interaction between a hydrophobically modified cationic polyelectrolyte and an anionic surfactant (sodium dodecyl sulfate, SDS) has been investigated by microcalorimetry, conductivity, and UV-vis spectrophotometry. The polyelectrolyte employed was a newly synthesized polymer (D40OCT30) based on dextran having pendant N-(2-hydroxypropyl)-N,N-dimethyl-N-octylammonium chloride groups randomly distributed along the polymer backbone with a degree of substitution (DS) of 28.1%. The interaction between D40OCT30 and SDS was found to be very strong because of the introduction of ionic and hydrophobic moieties on the backbone of the dextran polymer. The aggregation concentration of polyelectrolyte-SDS complex (CAC(complex)) was derived from the curves of variation of the observed enthalpy, solution conductivity, and optical dispersion with SDS concentrations. The results show that these values obtained from different methods are coincident and increase with D40OCT30 concentration. A mechanism of interaction is proposed and discussed in detail in the text. The total interaction enthalpies were derived from the observed enthalpy curves. The results indicate that the total interaction process is entropy-driven. From the calorimetric and turbidity measurements, the partial phase diagram that describes the dependence of the phase boundary on polymer alkyl side chain concentration is also deduced.