Controlled synthesis of polyepichlorohydrin with pendant cyclic carbonate functions for isocyanate-free polyurethane networks
| Autor: | Anne-Laure Brocas, Sylvain Caillol, Alain Deffieux, Stéphane Carlotti, Gabriel Cendejas |
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| Rok vydání: | 2011 |
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Polymers and Plastics 010405 organic chemistry Chemistry Allyl glycidyl ether Organic Chemistry 010402 general chemistry 01 natural sciences Isocyanate 0104 chemical sciences chemistry.chemical_compound Anionic addition polymerization Polymerization Diamine Polymer chemistry Materials Chemistry Copolymer Organic chemistry Epichlorohydrin |
| Zdroj: | Journal of Polymer Science Part A: Polymer Chemistry. 49:2677-2684 |
| ISSN: | 0887-624X |
| DOI: | 10.1002/pola.24699 |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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