| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1380370 | Carbohydrate Polymers | 2006 | 5 Pages |
Abstract
Some reactional parameters as mol ratio (salicylaldehyde:free amino groups), reaction time and temperature were investigated in order to improve the substitution degree (DS) in the preparation of biopolymeric Schiff bases from chitosan. In this case, the reaction of chitosan and salicylaldehyde was used as a probe system in order to produce the Schiff base. The use of 50% (mol/mol) salicylaldehyde excess, reaction time of 18 h and temperature of 55 °C permitted to obtain a DS of 60% without evidences of hydrolysis of the biopolymeric matrix or changes in its acetylation degree.
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Authors
Luciana Simionatto Guinesi, Éder Tadeu Gomes Cavalheiro,