Study of poly (sodium-4-styrenesulfonate) behavior in water/non-solvent mixtures by conductivity and refractive index measurements
| Autor: | Ons Zoghlami, Tahar Tajouri, Moez Guettari |
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| Rok vydání: | 2017 |
| Předmět: |
Work (thermodynamics)
Polymers and Plastics Sodium Analytical chemistry chemistry.chemical_element 02 engineering and technology Conductivity Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Polyelectrolyte 0104 chemical sciences stomatognathic diseases Colloid and Surface Chemistry Volume (thermodynamics) chemistry Polymer chemistry Materials Chemistry Molar mass distribution Physical and Theoretical Chemistry 0210 nano-technology Refractive index |
| Zdroj: | Colloid and Polymer Science. 295:1729-1739 |
| ISSN: | 1435-1536 0303-402X |
| DOI: | 10.1007/s00396-017-4104-y |
| Popis: | In this research paper, we intend to describe some characteristics and properties of polyelectrolyte as well as its specific behavior in mixed media. We have studied the behavior of poly (sodium-4-styrenesulfonate) (PSS) in water/ethanol media under temperature, concentration and non-solvent (ethanol) addition effects by conductivity and refractive index measurements. The average molecular weight of PSS was about 1,000,000 g mol−1. In the first part of this work, we have tested the validity of the Manning’s theory for this system, where the equivalent conductivity was calculated over the temperature and concentration range. A major discrepancy between the experimental and the calculated equivalent conductivity was observed. In a second part, we have measured the refractive indices of PSS in water/ethanol mixtures. The specific volumes of PSS were deduced according to Lorentz-Lorenz equation for all the mixture’s compositions and the studied temperature range. A correlation between the PSS structure and the variation of its specific volume was shown. |
| Databáze: | OpenAIRE |
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