Samenvatting
Functionalization of hydroxy telechelic poly(e-caprolactone) (PCL) (Mn = 2 kg/mol) with the quadruple hydrogen bonding unit 2-ureido-41;1H3;-pyrimidinone (UPy) leads to a supramol. polymer with improved properties and for use as a biomaterial. Oscillatory shear expts. were used to investigate the mech. properties of the new supramol. material. In the high frequency regime, the supramol. polymer shows similarities to com. available high mol. wt. PCL, indicating that dimerization of the UPy units leads to a high d.p. In the low frequency regime, a plateau in the moduli was obsd. indicating that relaxation was slow. Stress relaxation expts. confirm the presence of very slow relaxation processes, as even after 30 h significant residual stress was obsd. This indicates that the material exhibits a gel-like behavior, meaning that the melt state has a yield stress.
Originele taal-2 | Engels |
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Titel | Abstracts of Papers, 230th ACS National Meeting |
Plaats van productie | Washington, DC, United States |
Uitgeverij | American Chemical Society |
Pagina's | PMSE-257 |
Status | Gepubliceerd - 2005 |
Evenement | 230th ACS National Meeting - Washington, Verenigde Staten van Amerika Duur: 28 aug. 2005 → 1 sep. 2005 |
Congres
Congres | 230th ACS National Meeting |
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Land/Regio | Verenigde Staten van Amerika |
Stad | Washington |
Periode | 28/08/05 → 1/09/05 |
Ander | ACS national meering ; 230 |