INVESTIGADORES
MANFREDI liliana Beatriz
artículos
Título:
Use of epoxy-phenolic lacquers in food can coatings: characterization of lacquer and cured film
Autor/es:
L. B. MANFREDI; M.J.L.GINÉS; G.J.BENÍTEZ; W.A.EGLI; H.RISSONE; A. VÁZQUEZ
Revista:
JOURNAL OF APPLIED POLYMER SCIENCE
Editorial:
John Wiley and Sons Inc.
Referencias:
Lugar: Hoboken, NJ; Año: 2005 vol. 95 p. 1448 - 1458
ISSN:
0021-8995
Resumen:
Liquid and cured epoxy–phenolic lacquers used as can coatings were characterized. Tinplate was used as the base material, which was coated with lacquers of different epoxy to phenolic ratios (EPRs) from a comercial source. Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) were used together to obtain helpful information about the degree of curing and the composition of the lacquers. From FTIR analysis, we were able to infer that the lacquers were composed of a high-molecular-weight diglycidyl ether of bisphenol A type epoxy resin and a resol-type phenolic resin. In addition, from FTIR spectra, we estimated the EPRs of lacquers applied on the tinplate and detected if they had been overcured. The EPRs of the applied lacquers were estimated also from DSC analysis. From TGA, we detected undercuring in the applied lacquers.