Rheological behavior of a quadruple hydrogen-bonded supramolecular polyester

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademic

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-2Engels
TitelAbstracts of Papers, 230th ACS National Meeting
Plaats van productieWashington, DC, United States
UitgeverijAmerican Chemical Society
Pagina'sPMSE-257
StatusGepubliceerd - 2005
Evenement230th ACS National Meeting - Washington, Verenigde Staten van Amerika
Duur: 28 aug. 20051 sep. 2005

Congres

Congres230th ACS National Meeting
Land/RegioVerenigde Staten van Amerika
StadWashington
Periode28/08/051/09/05
AnderACS national meering ; 230

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