Carbohydrate‐based polyurethanes: A comparative study of polymers made from isosorbide and 1,4‐butanediol |
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| Authors: | Romina Marín Abdelilah Alla Antxon Martínez de Ilarduya Sebastián Muñoz‐Guerra |
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| Affiliation: | Departament d'Enginyeria Química, Universitat Politècnica de Catalunya, ETSEIB, Diagonal 647, 08028 Barcelona, Spain |
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| Abstract: | A set of linear polyurethanes containing isosorbide units were synthesized by polymerization in solution from HDI and MDI diisocyanates and 1,4‐butanediol (BD), isosorbide (Is) or diisosorbide diurethanes (Is2HDI and Is2MDI) as diols. The thermal transitions, thermal stability, and crystal structure of the polyurethane homopolymers and copolymers containing isosorbide were evaluated and compared with those displayed by their polyurethane analogues entirely made of BD. It was found that incorporation of Is units in the polyurethane chain produced significant changes in Tg, Tm, and Td but no significant differences were noticed between copolymers made from Is or Is2 monomers. Degradation assays revealed that the presence of Is units increased slightly the hydrolysis rate of polyurethanes. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 |
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| Keywords: | polyurethanes renewable resources structure– property relations copolymerization |
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