Preliminary study of UV ageing process of proteinaceous paint binder by FT-IR and principal component analysis

Manzano, Eloísa; Navas, Natalia; Checa-Moreno, R.; Rodríguez-Simón, Luis Rodrigo; Capitán-Vallvey, L.F.

doi:10.1016/j.talanta.2008.10.014

Cited by 38 publications

(24 citation statements)

References 24 publications

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“…During the radical curing processes H • -transfer from the double allylic -CH2-group takes place (Scheme 1) [1,4]. Besides the transition-metal catalysts as discussed below, also, for example, UVirradiation accelerates these reactions and may be applied in industrial curing processes (e.g., for ink drying) [7]. For paint drying, UV-curing is more limited, as domestic use UV-irradiation is fluctuating too much and, therefore, UV-curing is not reliable enough to give robust performance.…”

Section: Alkyd Resinsmentioning

confidence: 99%

Manganese and Iron Catalysts in Alkyd Paints and Coatings

Hage¹,

Böer²,

Maaijen³

2016

Inorganics

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Many paint, ink and coating formulations contain alkyd-based resins which cure via autoxidation mechanisms. Whilst cobalt-soaps have been used for many decades, there is a continuing and accelerating desire by paint companies to develop alternatives for the cobalt soaps, due to likely classification as carcinogens under the REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) legislation. Alternative driers, for example manganese and iron soaps, have been applied for this purpose. However, relatively poor curing capabilities make it necessary to increase the level of metal salts to such a level that often coloring of the paint formulation occurs. More recent developments include the application of manganese and iron complexes with a variety of organic ligands. This review will discuss the chemistry of alkyd resin curing, the applications and reactions of cobalt-soaps as curing agents, and, subsequently, the paint drying aspects and mechanisms of (model) alkyd curing using manganese and iron catalysts.

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Section: Alkyd Resinsmentioning

confidence: 99%

Manganese and Iron Catalysts in Alkyd Paints and Coatings

Hage¹,

Böer²,

Maaijen³

2016

Inorganics

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“…Fourier-transform infrared spectroscopy (FT-IR) is a wellestablished technique to characterize organic and inorganic painting materials present in artworks [1], being non destructive, fast and low cost technique, and requiring minimum sample preparation [2]. Moreover, the use of different FT-IR configurations (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…ATR, DRIFT, PAS spectroscopies, FT-IR microspectroscopy, etc.) ensures high versatility in investigating both organic and inorganic materials in Cultural Heritage, for several purposes, such as diagnostic [1][2][3][4][5][6] and localization of materials in paint cross sections [7][8][9][10][11][12]. Infrared spectroscopy is also a fundamental tool to investigate the degradation and ageing of organic materials in Cultural Heritage.…”

Section: Introductionmentioning

confidence: 99%

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Fourier transform infrared spectroscopic study of rabbit glue/inorganic pigments mixtures in fresh and aged reference paint reconstructions

Pellegrini

Duce

Bonaduce

et al. 2016

Microchemical Journal

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We studied the interactions of rabbit glue, a collagen-based proteinaceous binder, with azurite (Cu3(CO3)2(OH)2), calcium carbonate (CaCO3), hematite (Fe2O3·nH2O), red lead (Pb3O4) and cinnabar (HgS) by Fourier transform infrared spectroscopy (FT-IR). The research was carried out on a set of paint reconstructions, which were analysed before and after artificial light ageing. A deconvolution of the amide I FT-IR absorption peak was performed with a written-in-house LabVIEW program to study the secondary structure of the glue.The changes in the glue conformation highlighted that all the inorganic pigments interact with the proteinaceous binder. The conformational changes were correlated with a loss of stability of the collagen structure, especially after ageing, likely due to the interlayer coordination of metals salts and oxide with protein functional groups. These results were correlated with the lower thermal stability of the glue/pigment mixtures with respect to the pure glue, evidenced by thermogravimetry (TG) and differential scanning calorimetry (DSC) analyses performed in a previous step of this work

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“…Several analytical methods including Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and various chromatographic techniques have been employed by other researchers in the identification of binding media [6][7][8][9][10][11]. These methods offer a number of advantages, but also come with deficiencies.…”

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confidence: 99%