RT Journal Article
T1 Fluorescence labels to monitor water absorption in epoxy resins
A1 González Benito, Francisco Javier
A1 Bravo de Pedro, Julio
A1 Mikes, Frantisek
A1 Baselga Llidó, Juan
AB Water uptake phenomena was studied in a group of commercial epoxy based thermosets using gravimetric and fluorimetric analysis. The different epoxy formulations were labeled with two dansyl derivatives differing in the spacer length between the chain and the fluorophore moiety. The fluorimetric method consisted of monitoring the changes in the first moment of the dansyl emission band as a function of water immersion time. Using the fluorescence, it was possible to obtain the parameters that govern the water diffusion process and there was a good concordance with gravimetric results. Furthermore, the fluorescence response of the dansyl moieties was used to study the effect of the molecular structure of the polymers in the water absorption process.
PB Elsevier
SN 0032-3861
YR 2003
FD 2003-01
LK http://hdl.handle.net/10016/25902
UL http://hdl.handle.net/10016/25902
LA eng
NO Authors wish to thank CICYT and UE for support under grants MAT1997-2072-CE and BE97-4472, respectively.
DS e-Archivo
RD 30 abr. 2024