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Shape memory biomaterials prepared from polyurethane/ureas containing sulfated glucose.
- Source :
-
Journal of Polymer Science Part A: Polymer Chemistry . Oct2015, Vol. 53 Issue 19, p2252-2257. 7p. - Publication Year :
- 2015
-
Abstract
- ABSTRACT Covalently crosslinked polyurethane/urea polymers were synthesized using diamine monomers modified with pendant glucose groups and 2,4-toluene diisocyanate, poly(ethylene glycol) (PEG), and 1,1,1-tris(hydroxymethyl)ethane (triol) comonomers. The polymers showed shape memory behavior with a switching temperature dependent on the glass transition temperature. The glass transition temperature is tuned by varying the mole ratio between the glucose-diamine and PEG used in the polymerization. Increasing PEG content resulted in decreasing glass transition temperature, and a glass transition temperature of 39 °C, close to physiological temperatures, was obtained. The fixed shape showed gradual shape recovery behavior, but a fixity of 70% was achieved when the material was stored at 25 °C. The polymer recovered to the permanent shape when heated to 50 °C. Finally, the surface of a film of the polymer can be sulfated to achieve increased blood-compatibility without sacrificing the shape memory properties. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 2252-2257 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0887624X
- Volume :
- 53
- Issue :
- 19
- Database :
- Academic Search Index
- Journal :
- Journal of Polymer Science Part A: Polymer Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 109539886
- Full Text :
- https://doi.org/10.1002/pola.27668