| Revista: | Polimeros (Sao Carlos) |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000314205 |
| ISSN: | 1678-5169 |
| Autores: | Abreu, Fernanda R. de1 Campana-Filho, Sergio P |
| Instituciones: | 1Universidade de Sao Paulo, Instituto de Quimica de Sao Carlos, Sao Carlos, Sao Paulo. Brasil |
| Año: | 2005 |
| Periodo: | Abr-Jun |
| Volumen: | 15 |
| Número: | 2 |
| Paginación: | 79-83 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Chitosan was reacted with monochloroacetic acid at room temperature for different reaction times (3h, 5h, 7h and 10h) and employing two chitosan/monochloroacetic acid molar ratios (1:4.3 or 1:8.6). The carboxymethylation of chitosan was confirmed by ¹H NMR and 13C NMR spectroscopy. The carboxymethylchitosans had average degrees of substitution ranging from 0.52 to 1.44 as determined by potentiometric and conductimetric analysis. The occurrence of N,O-carboxymethylation was also observed in all cases |
| Disciplinas: | Química |
| Palabras clave: | Química de polímeros, Biopolímeros, Quitosana, Carboximetil quitosana, Caracterización |
| Keyword: | Chemistry, Polymer chemistry, Biopolymers, Chitosan, Carboxymethyllysine, Characterization |
| Texto completo: | Texto completo (Ver HTML) |
