Reversible polymeric resin cured by ionizing radiation for consolidation of wooden artifacts of cultural heritage

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-03-26 DOI:10.1016/j.radphyschem.2025.112765

Maria José Alves de Oliveira, Mariana Araujo, Larissa Otubo, Sonia Mello-Castanho, Pablo Vasquez

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引用次数: 0

Abstract

This study investigated the application of Paraloid B72 resin, modified with methyl methacrylate (MMA) and butyl methacrylate (MaBu) monomers, to develop new materials for the consolidation and restoration of wooden objects. The curing process was conducted using ionizing radiation from a gamma source (cobalt-60), eliminating the need for organic solvents. After characterization by gel fraction analysis, the Paraloid 30 % formulation with MMA 40 % and MaBu 30 % was selected for further characterizations, including Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Fourier Transform Infrared Spectroscopy (FTIR), and impregnation tests. The formulation was impregnated into wooden artifacts, cured using ionizing radiation, and subsequently characterized by FTIR, Scanning Electron Microscopy (SEM), and Computed Tomography (CT). The results showed that ionizing radiation replaces the need for catalysts, increasing the thermal stability of the resin and allowing cure control through dose (in kGy) and dose rate (kGy/h). This enabled the resin impregnation without compromising the integrity or the information contained in the consolidated artifact. The development of the methodology and resin formulation presented scientific challenges, particularly in ensuring that the desirable characteristics and reversibility were maintained.

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.