Search

Accelerated ageing is an often-used tool in conservation research, yet difficult to apply to parchment due to the materials inherent heat sensitivity. The complexity of this organic material makes the analysis of its deterioration especially challenging. An attempt to develop a non-heat ageing protocol for parchment is described in this paper. The work was performed within the scope of a MA-thesis at the State Academy of Art and Design Stuttgart. Samples of a modern new limed goat parchment and pieces of reconstituted parchment made from bovine hide powder were subjected to a combination of light ageing and dynamic ageing at moderate temperatures. All samples were analysed with the goal to observe degradation on as many structural levels as possible: colour measurement via VIS spectrometry and light-microscopic observation of fibre damage were employed to assess visible changes. Shrinkage temperature (Ts) was measured as an indicator for the amount of intact intrafibrillar bonds and the determination of the maximum moisture absorption capacity gave an impression on the parchments overall level of hygroscopy. In addition, PMF (Peptid Mass Fingerprinting) via MALDI/MS TOF was performed on extracts from unaged and light aged goat parchment. The results of the different types of analysis showed significant degradation on different structural levels of the parchment, indicating that accelerated ageing of parchment that uses a combination of light and dynamic ageing may be a viable alternative to the more commonly applied thermal ageing. [ABSTRACT FROM AUTHOR]

The article focuses on the microwave drying technology for drying and disinfecting of flooded books . It states that the technology utilizes microwave absorption filters which was made from special porous ceramics acting absorbent and transparent material for microwaves. It mentions that the treatment of flooded books with the microwave drying technology had destroyed moulds and spores through the ultraviolet electrode-less lamps.

The focuses on the use and development of ZerOx technology, a low-O2 technology, for conservation, protection, and treatment of biological infested objects in museums, libraries, and archives. It discusses the principles, limitations, and the possibilities of application of the technology. It also explores the process of treatment or conservation through the use of Vacuum Pressure Swing Absorption (VSPA) of the ZerOx generator.

The article examines the effect of temperature fluctuations on the water sorption capacity of the paper materials stored inside a closed solander box. Two boxes, filled with either a stack of corrugated board mounts or mat board mounts, were subjected to cyclic temperature changes at a range of 28 and 56 degrees Celsius. It was found that the boards' water sorption capacity gradually decreased over time, which is assumed to be caused by an increase in density of cellulose during wetting-drying cycles. It concludes that the temperature changes outside a closed box have a distinct effect on the moisture content of the paper materials stored inside the box.