Composites of a terpolymer (46mol% L-lactic acid, 38mol% glycolic acid, 16mol% trimethylene carbonate) and TiO2 nanoparticles (0-2w%) are obtained from sonicated dispersions in dichloromethane followed by solvent evaporation. All samples display a glass transition at a temperature close to body temperature; Tg of composites is slightly higher than that of the matrix polymer, indicating a degree of polymer-nanoparticle interaction. The addition of TiO2 nanoparticles improves the mechanical properties of the polymer (tensile modulus and tensile strength increase) and enhances both the free recovery (from 92% to 100% with 1.92w% of TiO2) and the constrained recovery in the presence of an opposing force (from 7% to 34 % with 1.92w% of TiO2).

SHAPE-MEMORY POLYMERS REINFORCED WITH INORGANIC NANOPARTICLES

ZINI, ELISA;SCANDOLA, MARIASTELLA
2009

Abstract

Composites of a terpolymer (46mol% L-lactic acid, 38mol% glycolic acid, 16mol% trimethylene carbonate) and TiO2 nanoparticles (0-2w%) are obtained from sonicated dispersions in dichloromethane followed by solvent evaporation. All samples display a glass transition at a temperature close to body temperature; Tg of composites is slightly higher than that of the matrix polymer, indicating a degree of polymer-nanoparticle interaction. The addition of TiO2 nanoparticles improves the mechanical properties of the polymer (tensile modulus and tensile strength increase) and enhances both the free recovery (from 92% to 100% with 1.92w% of TiO2) and the constrained recovery in the presence of an opposing force (from 7% to 34 % with 1.92w% of TiO2).
ATTI del XIX Convegno Italiano di Scienza e Tecnologia delle Macromolecole
4.111
4.112
E.Zini; P. Dobrzynski; M. Scandola
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/77833
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