Poly(ethylene glycol)-based shape-memory polymers |
| |
Authors: | Oussama Boumezgane |
| |
Institution: | Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, Modena, Italy |
| |
Abstract: | Poly(ethylene glycol) (PEG) blends photo-curable and thermal activated shape-memory polymers (SMPs), with different activation temperature (Tswitch), have been synthesized and characterized. PEG blends with different molecular weights were chain-end functionalized with isocyanate ethyl methacrylate and photo-cured with UV lamp. Degree of cross-linking of the blend network, determined by gel content measurement, resulted as higher than 95%. The thermal and thermomechanical properties of these SMPs PEG blends were characterized by differential scanning calorimetry and dynamic mechanical analysis. The shape-memory properties of the networks were quantified using thermomechanical three-point bending experiments and showed strain fixity rates higher than 99% and a minimum strain recovery ratio of 82%. |
| |
Keywords: | Blends one-way shape-memory effect poly(ethylene glycol) shape-memory polymers |
|
|