Linear polyurethanes derived from alditols and diisocyanates (pages 4109–4117)
Ma Violante de Paz, Romina Marín, Francisca Zamora, Khalid Hakkou, Abdelilah Alla, Juan A. Galbis and Sebastián Muñoz-Guerra
Article first published online: 17 JUL 2007 | DOI: 10.1002/pola.22127
Linear polyurethanes containing attached methoxy groups were prepared by polycondensation of sugar-derived treitols or pentitols with either aliphatic or aromatic diisocianates. All these novel polyurethanes are amorphous regardless of what is the configuration of the sugar moiety. They display higher Tg than their nonsubstituted homologous but the thermal properties are scarcely influenced by the chemical constitution of the alditol. On the contrary, their hydrodegradability appeared to be largely determined by the length of the polymethoxy alkylene segment present in the polymer chain.