Artículo
Synthesis and Characterization of New Carbohydrate-based Polyureas
Autor/es | Begines Ruiz, Belén
Zamora, Francisca Paz Báñez, María Violante de Roffé, Isaac Mancera, Manuel Galbis Pérez, Juan Antonio |
Departamento | Universidad de Sevilla. Departamento de Química Orgánica y Farmacéutica |
Fecha de publicación | 2013-07 |
Fecha de depósito | 2023-12-29 |
Publicado en |
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Resumen | A batch of linear [m,n]-type sugar-based polyureas was synthesized by polyaddition reaction in solution from
hexamethylene diisocyanate or 4,4’-methylene-bis(phenyl isocyanate) with the acyclic 2,3,4-tri-O-methyl-1,5-
... A batch of linear [m,n]-type sugar-based polyureas was synthesized by polyaddition reaction in solution from hexamethylene diisocyanate or 4,4’-methylene-bis(phenyl isocyanate) with the acyclic 2,3,4-tri-O-methyl-1,5- diamino-alditols having L-arabino, or xylo confi guration or the bicyclic 1,6-diamino-1,6-dideoxy-2,4:3,5-diO-methylene-D-glucitol. The polymers were obtained in good yields and fair molecular weights. All these polyureas were semicrystalline materials showing well-defi ned melting transition within the 86−171°C range, with Tg s being dependent on the aliphatic or aromatic nature of the diisocyanate used, and on the cyclic or acyclic chemical structure of the sugar moiety. They were found to be stable up to around 240°C, decomposing at higher temperatures through a one- or two-stage mechanism. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España Junta de Andalucía |
Identificador del proyecto | MAT2009-14053-C02-02
P07-FQM-02648 |
Cita | Begines Ruiz, B., Zamora, F., Paz Báñez, M.V.d., Roffé, I., Mancera, M. y Galbis Pérez, J.A. (2013). Synthesis and Characterization of New Carbohydrate-based Polyureas. Journal of Renewable Materials, 1 (3), 212-221. https://doi.org/10.7569/JRM.2013.634119. |
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