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Polyolefin-Supported Hydrogels for Selective Cleaning Treatments of Paintings

机译：用于涂料的选择性清洁处理的聚烯烃支撑水凝胶

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Surface decontamination is of general concern in many technical fields including optics, electronics, medical environments, as well as art conservation. In this respect, we developed thin copolymer networks covalently bonded to flexible polyethylene (PE) sheets for hydrogel-based cleaning of varnished paintings. The syntheses of acrylates and methacrylates of the surfactants Triton X-100, Brij 35, and Ecosurf EH-3 or EH-9 and their incorporation into copolymers with acrylamide (PAM) and -(4-benzoylphenyl)acrylamide are reported. Photocrosslinked polymer networks were prepared from these copolymers on corona-treated PE sheets, which can be swollen with aqueous solution to form hydrogel layers. The cleaning efficacy of these PE-PAM hydrogel systems, when swollen with appropriate cleaning solutions, was evaluated on painting surfaces in dependence of the PAM copolymer composition and degree of crosslinking. Specifically, soil and varnish removal and varnish surface solubilization were assessed on mock-ups as well as on paintings, indicating that even surfactant-free cleaning solutions were effective.
机译：在许多技术领域，包括光学，电子，医疗环境以及艺术保护领域，表面净化都是人们普遍关心的问题。在这方面，我们开发了共价键合到柔性聚乙烯（PE）片材上的薄共聚物网络，用于基于水凝胶的清漆绘画清洁。报道了表面活性剂Triton X-100，Brij 35和Ecosurf EH-3或EH-9的丙烯酸酯和甲基丙烯酸酯的合成，以及它们与丙烯酰胺（PAM）和-（4-苯甲酰基苯基）丙烯酰胺的共聚物的结合。由这些共聚物在电晕处理过的PE片材上制备了光交联的聚合物网络，可以将其用水溶液溶胀以形成水凝胶层。当用适当的清洁溶液溶胀时，根据PAM共聚物的组成和交联度，评估了这些PE-PAM水凝胶体系的清洁效果。具体而言，在模型和油漆上评估了去污剂和清漆的去除以及清漆表面的溶解性，表明即使不含表面活性剂的清洁溶液也有效。

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