Back to Search Start Over

A study of mechanical properties of papers exposed to various methods of accelerated ageing. Part I. The effect of heat and humidity on original wood-pulp papers

Authors :
Havlínová, Bohuslava
Katuščák, Svetozár
Petrovičová, Miroslava
Maková, Alena
Brezová, Vlasta
Source :
Journal of Cultural Heritage. Apr2009, Vol. 10 Issue 2, p222-231. 10p.
Publication Year :
2009

Abstract

Abstract: The damage to historical documents and books caused by the acidic character of paper is often manifested as a complete loss of their mechanical properties. Deacidification and restoration of archived paper objects require knowledge of the long-term behaviour of paper before and after repair actions. Our study was focused on the investigation of mechanical properties (tensile strength, stretch, tensile index, zero-span tensile strength, folding endurance) of original papers (one alkaline and three different acidic samples) exposed to five methods of dry-heat and moist-heat accelerated ageing. The degree of paper deterioration upon ageing was significantly influenced by the temperature and relative humidity, along with the intrinsic chemistry of the individual paper samples. The correlation matrix evaluated at a 95% confidence level for tensile strength, stretch, tensile index and zero-span showed linear correlations between these mechanical properties for all the paper samples. However, a linear dependence of folding endurance on zero-span tensile strength was found only for alkaline paper, which revealed the highest resistance to the accelerated ageing tests. In addition, the concentration of paramagnetic semiquinone species in the acidic lignin-containing paper samples was monitored by Electron paramagnetic resonance spectroscopy. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
12962074
Volume :
10
Issue :
2
Database :
Academic Search Index
Journal :
Journal of Cultural Heritage
Publication Type :
Academic Journal
Accession number :
40117706
Full Text :
https://doi.org/10.1016/j.culher.2008.07.009