Development of new analytical methods for the characterization of synthetic resins used in contemporary artworks, identification of microbiological alterations and control of biocide treatments
Esta página web, la base de datos, los web reports y toda la ainformación que contiene es parte del proyecto I+D+I CTQ2005-09339-CO3-01 financiado por MCIN/AEI/10.13039/501100011033 y cofinanciado con fondos FEDER
Programas Nacionales del Plan Nacional I+D+I 2004-207.
Period: 2006-2008
Partners: Dpt. Pintura, Universidad de Granada, Dpt. Química Analítica, Universitat de València, Instituto Universitario de Restauración del Patrimonio, Universitat Politècnica de València.
Coordinator: Mª Teresa Doménech Carbó.
Subproject director: José Vicente Gimeno-Adelantado
Subproject director: Fernando Bolivar-Galiano
Summary
Use of synthetic resins has been extended in the contemporary artworks. Different polymers can be found in art objects as protective films or varnishes or binders. In addition, many restoration treatments carried out in the last century are performed with these polymeric materials that are used as adhesives, consolidants and materials used for casting and filling missing parts of the object. This project is focused on the study of synthetic resins used as protective films and also as binding-consolidants from contemporary art objects using highly sensitive analysis surface techniques such as Atomic Force Microscopy (AFM), Cryo-SEM/EDX and FESEM/EDX, VPSEM, ESEM, SEM/EDX, hyphenated techniques such as pyrolisis-GC/MS, GC/MS and HPLC of molecular exclusion, high resolution spectroscopic and spectrometric techniques such as Raman spectroscopy, IR-microspectroscopy, FTIR, MS-MS and MALDI-TOF structural analytical techniques with high sensitivity and specificity such as, capillary electrophoresis (CE), and solid state electroanalytical methods including linear scan voltammetry (LSV), cyclic voltammetry (CV) and differential pulse voltammetry (DPV) and square wave voltammetry. Micromorphological examination has been also included using light microscopy and chromatic characterization using a spectrophotometer. This project is aimed to the study of the influence of the microbiological agents on the stability of the synthetic resins by determining the changes produced on their chemical composition due to the microorganisms and establish how these alteration processes affect the morphology of the pictorial and protective films. Molecular Biology techniques (PCR, DGGE, TGGE) will be developed in order to identify biodeterioration agents. The project also includes a study on the control of biocide treatments not only from the point of view of the micromorphological alteration produced by these products but also from their changes in composition. In this way, cleaning will be carried out with a total respect to the work of art. The project will also provide information of historical interest concerning the composition and preparation technique of synthetic varnishes in Spain. The proposed methods will be applied to the analysis of works of art from the Valencian Community, Andalucía, Madrid Community, among others, etc.
d M] h �j �ng tal techniques: AFM, Cryo-SEM/EDX, SEM/EDX, ESEM, mechanical tester at controlled temperature and RH, mechanical tester coupled to Cryo-SEM and indentation tester, chromatographic (CEC, size-exclusion-HPLC), spectroscopic (ATR-FTIR, IR-Microspectroscopy, UV-Vis), spectrometric (MS-MS) and hyphenated systems (Py-GC-MS, HPLC-MS, GC-MS), (LSV, CV, DPV,SQWV, impedance), and the hyphenated technique AFM- solid state electroanalysis (AFM-CV).
Finally, the developed methods will be applied to several case study proposed by art conservation companies which are collaborating as EPO in this project, where the control of the cleaning treatments could not be satisfactorily resolved, until now, by means of conventional techniques.
As complementary activity a isolation and identification of fungi and bacteria active on paintings and polychromed sculpture is included in the work program of the project.