Study of interactions between hyaluronan and cationic surfactants by means of calorimetry, turbidimetry, potentiometry and conductometry
| Autor: | Martina Klučáková, Marija Bešter-Rogač, Bojan Šarac, Miloslav Pekař, J. Krouská |
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| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Polymers and Plastics Conductometry Organic Chemistry Inorganic chemistry Cationic polymerization 02 engineering and technology Calorimetry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Micelle 0104 chemical sciences chemistry.chemical_compound chemistry Pulmonary surfactant Bromide Materials Chemistry Turbidimetry 0210 nano-technology |
| Zdroj: | Carbohydrate Polymers. 157:1837-1843 |
| ISSN: | 0144-8617 |
| DOI: | 10.1016/j.carbpol.2016.11.069 |
| Popis: | The thermodynamics of the micelle formation of the cationic surfactants tetradecyltrimethylammonium bromide (TTAB) and cetyltrimethylammonium bromide (CTAB) with and without the addition of hyaluronan of two molecular weights was studied in aqueous solution by titration calorimetry. Macroscopic phase separation, which was detected by calorimetry and also by conductometry, occurs when charges on the surfactant and hyaluronan are balanced. In contrast, turbidimetry and potentiometry showed hyaluronan-surfactant interactions at very low surfactant concentrations. The observed differences between systems prepared with CTAB and TTAB indicate that besides the electrostatic interactions, which probably predominate, hydrophobic effects also play a significant role in hyaluronan interactions with cationic surfactants. |
| Databáze: | OpenAIRE |
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