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Fig. 2 | Heritage Science

Fig. 2

From: Characterization of polyvinyl alcohol-borax/agarose (PVA-B/AG) double network hydrogel utilized for the cleaning of works of art

Fig. 2

a FTIR spectra of pure PVA, 3% PVA-B, 3%/1% PVA-B/AG, and 2% AG. The brown dotted spectrum represents the sum of 3% PVA-B and 2% AG spectra. b Illustration of the proposed interactions between PVA (in red), borax (in black), AG (in blue), and water (in orange) in the PVA-B/AG DN hydrogel and the formation of intermolecular (in green) and intramolecular (in magenta) hydrogen bonds

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