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EnglishTerpolymers of L-lactide, glycolide and trimethylene carbonate are synthesized via ring opening polymerization reaction of the cyclic monomers using zirconium acetylacetonate as initiator. All terpolymers are amorphous single phase materials with a glass transition temperature (Tg) that changes with composition. Thermomechanical experiments show that the polymers display shape memory properties and that they are able to recover the original shape in a matter of seconds after a suitable thermal stimulus. Thanks to the possibility to modulate the Tg by varying the monomer feed ratio, shape memory polymers with selected transition temperature can be obtained for specific applications.
| Titolo: | NUOVI TERPOLIMERI BIODEGRADABILI A MEMORIA DI FORMA | |
| Autore/i: | ZINI, ELISA; SCANDOLA, MARIASTELLA; P. Dobrzynski | |
| Autore/i Unibo: | ||
| Anno: | 2007 | |
| Titolo del libro: | ATTI del XVIII° Convegno Italiano di Scienza e Tecnologia delle Macromolecole | |
| Pagina iniziale: | 329 | |
| Pagina finale: | 330 | |
| Abstract: | Terpolymers of L-lactide, glycolide and trimethylene carbonate are synthesized via ring opening polymerization reaction of the cyclic monomers using zirconium acetylacetonate as initiator. All terpolymers are amorphous single phase materials with a glass transition temperature (Tg) that changes with composition. Thermomechanical experiments show that the polymers display shape memory properties and that they are able to recover the original shape in a matter of seconds after a suitable thermal stimulus. Thanks to the possibility to modulate the Tg by varying the monomer feed ratio, shape memory polymers with selected transition temperature can be obtained for specific applications. | |
| Data prodotto definitivo in UGOV: | 26-feb-2008 | |
| Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |
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