An overview of gel-based cleaning approaches for art conservation

Abstract This article presents a thorough overview of gel-based cleaning methods used in art conservation. It covers the evolution of traditional approaches and the development of advanced gel systems. The paper examines the structure, characterization, and classification of gels, as well as their mechanical properties, which are crucial in art conservation. Various types of gels, including hydrogels, organogels, xerogels, semi-IPNs, and microgels, are discussed in detail, highlighting their unique properties and suitability for specific conservation applications. The advantages, limitations, and applications of both natural and synthesized polymers that form the basis for these gels are also analyzed. Case studies are presented to demonstrate the practicality and effectiveness of gels in cleaning different materials such as paper, paintings, metals, and textiles. These case studies showcase successful removal of stains, pollutants, and unwanted layers while preserving the integrity and aesthetic value of the artworks. By contributing to the existing knowledge on gel-based cleaning approaches in art conservation, this comprehensive review establishes a foundation for future research and development in this field. The review concludes with a discussion on the challenges and potential future directions in the development and optimization of gel-based cleaning methods for art conservation. Overall, this article is a valuable resource for researchers, conservators, and students in the field of art conservation, providing essential information and insights into the use of gels as effective and safe cleaning agents.