Freese Silvia, Diraoui Samar, Mateescu Anca, Frank Petra, Theodorakopoulos Charis, Jonas Ulrich
Department Chemistry - Biology, University of Siegen, Adolf-Reichwein-Strasse 2, D-57076 Siegen, Germany.
Continental Automotive Romania, Research and Development, Display Technology Department, Strada Siemens 1, 300704 Timisoara, Romania.
Gels. 2019 Dec 18;6(1):1. doi: 10.3390/gels6010001.
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.
表面去污在包括光学、电子、医疗环境以及艺术品保护在内的许多技术领域都备受关注。在这方面，我们开发了与柔性聚乙烯（PE）片共价键合的薄共聚物网络，用于基于水凝胶的清漆画清洁。本文报道了表面活性剂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）丙烯酰胺共聚的情况。由这些共聚物在经电晕处理的PE片上制备光交联聚合物网络，该网络可被水溶液溶胀形成水凝胶层。根据PAM共聚物组成和交联度，评估了这些PE - PAM水凝胶体系在使用适当清洁溶液溶胀时对绘画表面的清洁效果。具体而言，在模型以及画作上评估了污垢和清漆去除以及清漆表面溶解情况，结果表明即使是无表面活性剂的清洁溶液也有效。
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