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%.
Poly(ethylene glycol)-based shape-memory polymers / Boumezgane, Oussama; Messori, Massimo. - In: INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION. - ISSN 1023-666X. - 22:5(2017), pp. 463-471. [10.1080/1023666X.2017.1324589]
|Titolo:||Poly(ethylene glycol)-based shape-memory polymers|
|Data di pubblicazione:||2017|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1080/1023666X.2017.1324589|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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