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.

NUOVI TERPOLIMERI BIODEGRADABILI A MEMORIA DI FORMA

ZINI, ELISA;SCANDOLA, MARIASTELLA;
2007

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.
ATTI del XVIII° Convegno Italiano di Scienza e Tecnologia delle Macromolecole
329
330
E.Zini; M.Scandola; P. Dobrzynski
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/57642
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