Hydrogel-based cleaning of paper artworks is an increasingly widespread process in the cultural heritage field. However, the search for tuned (compatible, highly retentive and not perishable) hydrogels is a challenging open question. In this paper, a complete characterization of chemical hydrogels based on polyvinyl alcohol (PVA) crosslinked with telechelic PVA and their remarkable performances as gels for cleaning paper artworks are reported. The rheological properties, porosity, water content of these gels were determined and analyzed as a function of the components concentration during synthesis. Due mechanical and retentive properties, the reported gels are optimum candidates for paper cleaning applications. The efficacy of these PVA-based gels has been demonstrated applying them on the surface of the sheets of several paper artworks, and characterizing the samples before and after the cleaning process by means of a multidisciplinary approach involving spectroscopic and chromatographic tests.

中文翻译：

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聚乙烯醇基水凝胶是可用于文化遗产领域的新型可调材料。

在文化遗产领域，以水凝胶为基础的纸艺术品清洁是一个越来越普遍的过程。但是，寻找经过调质（相容，高保持力且不易腐烂）的水凝胶是一个具有挑战性的开放性问题。本文报道了与遥螯PVA交联的基于聚乙烯醇（PVA）的化学水凝胶的完整表征及其作为清洁纸艺术品用凝胶的卓越性能。测定并分析这些凝胶的流变性质，孔隙率，水含量，作为合成过程中组分浓度的函数。由于具有机械和保持性能，因此报道的凝胶是纸清洁应用的最佳选择。这些基于PVA的凝胶的功效已证明可将其应用于几张纸制品的薄片表面，