Novel Approaches for Opaque Reconstituted Parchment

Abstract

Novel approaches for reconstituted parchment from solely collagenous material are presented. The advantages and disadvantages of this infill technique are named, existing recipes which exclusively use collagenous material are analysed and modified. In a series of experiments, the possibilities to decrease or replace formaldehyde in existing recipes are explored and physical properties are investigated. As a result, two new recipes for reconstituted parchment are developed: the first one with a decreased amount of formaldehyde, the second one with potassium aluminium sulphate instead of formaldehyde. Their haptic and visual qualities are compared.

Spectral Features Differentiate Aging-Induced Changes in Parchment—A Combined Approach of UV/VIS, µ-ATR/FTIR and µ-Raman Spectroscopy with Multivariate Data Analysis

“…A decreasing trend in brightness is observed on the flesh side of all samples with progressing exposure time and even more prominently on the hair side of P5 H1 and P6 H2 ( Figure S4a ). This differential response to light-induced aging has been reported in the literature and is likely associated with additional, chemically less stable proteinaceous components, namely reticulin and elastin, which are more concentrated on the hair side of parchment [ 29 , 32 , 33 ]. However, this trend is not observed in all samples exposed with the hair side, as an inverse correlation between exposure time and brightness is observed for P1 H2 -P4 H2 .…”