Investigation of Impact of Stabilization System APTES/KI on Ageing Resistance of Inked Paper

Abstract

The investigation of cotton and eucalyptus fibers sheets treated with different historical writing inks has been performed. The inks: Black ink with iron (II) sulphate (1, pH 1.52), Black ink with copper (II) sulphate (2, pH 2.14); German recipe iron (II) sulphate (3, pH 1.62) were used as ink solutions. The paper and the ink treated paper samples were artificially aged (accelerated thermal aging at 80 °C for 90 days) in sealed ampoules and between glass and filter paper. The 3-aminopropyltriethoxysilane (APTES, as deacidification agent) and potassium iodide (KI, as antioxidant) solution in 2-propanol were used as stabilization system for inked paper. The pH measurements and DP data confirm that ageing in sealed ampoules is more destructive to the inked cotton or eucalyptus paper. The results of the experiments indicate that stabilization system APTES/KI have positive effect for not inked paper and during “passive conservation” procedure i. e. between glass plates and filter paper saturated with APTES/KI solution.