model paper samples

Evidence

"In order to evaluate the influence of the inks on cellulose in time, the samples were analyzed using pH measurements, UV-Vis spectroscopy, color spectrophotometry and FTIR-ATR analysis before and after ageing."

Remarks

The study examines how different ink components (copper ions, iron ions, gallic acid ratios, saffron, and gum Arabic) influence the degradation of the paper carrier (p. 96). It concluded that excess Fe2+ ions and excess gallic acid increase the oxidation of cellulose (p. 97).