The use of 9-anthroic acid and new amide derivatives to monitorize curing of epoxy resins

Martín, Olga; Baselga, Juan

doi:10.1016/s0924-0136(03)00374-1

Cited by 6 publications

(1 citation statement)

References 20 publications

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“…In the crosslinking reaction or curing reaction, reactive molecules, called hardeners or curing agents , are used. Amines are one of the most important agents used for the curing of epoxide resins 8. A significant spectral shift in the fluorescence emission maximum was observed during the curing process between the epoxide resin diglycidyl ether of bisphenol A (DGEBA) and the aromatic diamine 4,4′‐diaminodiphenylsulfone 9, 10.…”

Section: Introductionmentioning

confidence: 99%

Thermal curing of glass‐epoxy prepregs by luminescence spectroscopy

Sales

Diniz

Dutra

et al. 2010

J of Applied Polymer Sci

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In this study, we investigated the application of the luminescence spectroscopy technique in steady-state conditions to study glass fiber-epoxy F161 prepregs. We conducted this study by comparing the results obtained from the intrinsic fluorescence with Fourier transform near infrared spectroscopy. The extrinsic fluorescence of 9-anthroic acid (9-AA) was also used. Fourier transform infrared spectroscopy was also used to characterize the epoxide resin. The prepregs containing 9-AA and those that did not were heat-treated at 177 C (F161) for 1100 min at a 2 C/min heating rate. The results obtained by both methods indicated that the crosslinking reaction could be monitored by analysis of the spectral changes of the emission bands of the prepreg and 9-AA. The intrinsic emission at 320 nm was attributed to the fluorophore group containing the epoxy ring and was used to calculate the conversion degree. The photophysical behavior of the 9-AA probe indicated a reduction of free volume of the polymeric matrix with curing process.

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Section: Introductionmentioning

confidence: 99%