Tag Archives: paper

Do environmental fluctuations matter to book and paper collections?

by Yun Liu The impact of environmental fluctuations on paper degradation has always been of great interest to the conservation community. It is not only because paper is one of the heritage materials that are known as being sensitive to environmental conditions, but also because it is extremely challenging to keep microclimate constant, even under […]

Zero-span: an attractive alternative, but where to measure…

by Natalie Brown Recently I performed Zero-span measurements on a selection of 19th and 20th Century Chinese papers. A Zwick Roell tensile strength machine, equipped with a modified z span application, was used on a sample set that was a mixture of traditional handmade paper (image A) and mass-produced machine made papers (image B). Before […]

A Few Thoughts on Iron Gall Ink Reconstruction

by Yun Liu Paper heritage has long been threatened by the degradation caused by iron gall inks. Research has confirmed that the damage is a result of complex overlapping of different processes which are mainly generated by two degradation mechanisms of cellulose—acid catalysed hydrolysis and metal-catalysed oxidation, both being strongly influenced by ink properties. As […]