Figure 1From: Rheoreversible hydrogels in paper restoration processes: a versatile toolmid-FTIR ATR spectra of paper. Paper non treated (red line), paper after PEO hydrogel (black line), or PLU hydrogel (blue line) treatment for 45 minutes: In the inset: mid-FTIR ATR spectra of PEO hydrogel (red line) and PLU hydrogel (blue line) itself.Back to article page