| Revue: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000196048 |
| ISSN: | 0100-4042 |
| Autores: | Mansur, Claudia R. E1 Lucas, Elizabete F Pacheco, Carlos R.N González, Gaspar |
| Instituciones: | 1Universidade Federal do Rio de Janeiro, Instituto de Macromoleculas, Rio de Janeiro. Brasil 2Petroleo Brasileiro S.A., Centro de Pesquisas e Desenvolvimento, Rio de Janeiro. Brasil |
| Año: | 2001 |
| Periodo: | Ene-Feb |
| Volumen: | 24 |
| Número: | 1 |
| Paginación: | 47-54 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, descriptivo |
| Resumen en inglés | In this work, it was studied the behavior of the nonionic surfactant aqueous solutions, containing or not a hydrotropic agent, by resonance magnetic nuclear (NMR). We have studied monofunctional diblock copolymers of poly(propylene oxide-ethylene oxide) (R-PPO-PEO-OH, where R length is linear C4) as nonionic surfactant and sodium p-toluenesulfonate (NaPTS) as hydrotropic agent. The critical micelle concentration (CMC) of the aqueous copolymer solution was obtained from 1H-NMR. The preliminary study of the interaction between the copolymer, under the unimer and micelle forms, and the hydrotrope, in aqueous solutions, was evaluated by 1H-NMR and 13C-NMR |
| Disciplinas: | Química |
| Palabras clave: | Química analítica, Química orgánica, Tensoactivos, Surfactantes, Resonancia magnética nuclear, Carbono 13, Hidrotropía, Solución acuosa, Copolímeros |
| Keyword: | Chemistry, Analytical chemistry, Organic chemistry, Tensoactives, Surfactants, Nuclear magnetic resonance, Carbon 13, Hydrotropy, Aquosa solution, Copolymers |
| Texte intégral: | Texto completo (Ver HTML) |
