Belén Begines, Francisca Zamora, M. Violante de Paz, Isaac Roffé, Manuel Mancera, Juan A. Galbis*
Journal of Renewable Materials, Vol.1, No.3, pp. 212-221, 2013, DOI:10.7569/JRM.2013.634119
Abstract 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… More >
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