Controlled synthesis of polyepichlorohydrin with pendant cyclic carbonate functions for isocyanate‐free polyurethane networks |
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Authors: | Anne‐Laure Brocas Gabriel Cendejas Sylvain Caillol Alain Deffieux Stephane Carlotti |
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Affiliation: | 1. Université de Bordeaux, Laboratoire de Chimie des Polymères Organiques, CNRS, ENSCBP, 16 avenue Pey Berland, 33607 Pessac Cedex, France;2. Institut Charles Gerhardt, UMR5253 CNRS/UM2/ENSCM/UM1, Ecole Nationale Supérieure de Chimie de Montpellier, 8 rue de l'Ecole Normale, 34296 Montpellier Cedex 5, France |
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Abstract: | Poly(allyl glycidyl ether) and poly(allyl glycidyl ether‐co‐epichlorohydrin) were prepared by monomer‐activated anionic polymerization. Quantitative and controlled polymerization of allyl glycidyl ether (AGE) giving high molar mass polyether was achieved in a few hours at room temperature in toluene using tetraoctylammonium salt as initiator in presence of an excess of triisobutylaluminum ([i‐Bu3Al]/[NOct4Br] = 2?4). Following the same polymerization route, the copolymerization of AGE and epichlorohydrin yields in a living‐like manner gradient‐type copolymers with controlled molar masses. Chemical modification of the pendant allyl group into cyclic carbonate was then investigated and the corresponding polymers were used as precursors for the isocyanate‐free synthesis of polyurethane networks in presence of a diamine. Formation of crosslinked materials was followed and characterized by infrared and differential scanning calorimetry. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 |
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Keywords: | anionic polymerization isocyanate‐free monomer activation polyepichlorohydrin polyethers polyurethanes |
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