Characterization of seventeenth century papers from Valvasor's collection of the Zagreb Archdiocese

Abstract Valvasor's library is a unique example of Seventeenth century personal library, including over 7300 prints and 1530 books. Today, it kept in the Metropolitan Library Zagreb Archdiocese which part Croatian State Archives. In this study, we analysed selection papers from collection ( VC ) unknown origin composition. We used dual approach, combining results analyses two sets samples to find most useful tools for characterization historical handmade papers. 144 randomly selected were included study. As cultural heritage, only non-destructive used, such as visual inspection, surface imaging, measurements thickness determination optical properties (brightness, yellowness, opacity gloss). According properties, could be characterized yellowish opaque, without gloss. Due fact that not destroyed, took another set consisting 10 HP archival materials, dating 16th nineteenth century, subjected them non-destructive, well micro-destructive analyses. This was done supplement findings original collection. Initially, spot tests performed determine water absorbency identify presence lignin starch paper samples. SEM–EDS XRF applied identification inorganic elements. FTIR chemical structures components. Microscopic ways: imaged with digital microscope, morphological characteristics fibres studied using an microscope. The dominant present flax hemp, smaller proportion cotton. Additionally, thick thin light brown resembling straw detected. calcium-containing components, gelatine alum confirmed SEM–EDS, XFR analysis. Comparing on connection explored by possible define main goal study document characterize specific future use researchers or conservators. Furthermore, may serve model approach other who seek their collections.