INVESTIGADORES
GARRIDO Mariano Enrique
artículos
Título:
Modeling of complex viscosity changes in the curing of epoxy resins from near infrared spectroscopy and multivariate regression analysis
Autor/es:
M. GARRIDO; M. S. LARRECHI; F. X. RIUS
Revista:
APPLIED SPECTROSCOPY
Editorial:
Society for Applied Spectroscopy
Referencias:
Año: 2004 vol. 58 p. 1424 - 1430
ISSN:
0003-7028
Resumen:
The present study investigates the relationship between the changes in complex viscosity and near infrared spectra. Principal component regression analysis is applied to a near infrared data set obtained from the in situ monitoring of the curing of diglycidyl ether of bisphenol A with the diamine 4,4-diaminodiphenylmethane. The values of complex viscosity obtained by dynamical mechanical analysis during the cure process were used as a reference. The whole near infrared spectra recorded throughout the reaction, unlike the univariate data analysis at some wavelengths of the spectra, contain a sufficient amount of information to estimate the complex viscosity. The relationship found was high and the results demonstrate the quality of the fitted model. Also, a simple user-friendly procedure for applying of the model focused to the user is shown.
