Thermal analysis of new,artificially aged and archival linen |
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| Authors: | Carr D J Odlyha M Cohen N Phenix A Hibberd R D |
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| Institution: | (1) Clothing and Textile Sciences/Ngā Pūtaiao Pūeru, University of Otago/Te Whare Wānanga o Otāgo, Dunedin/Ōtepoti, New Zealand/Aotearoa;(2) School of Biological and Chemical Sciences, Birkbeck College, University of London Chemistry Department, 20 Gordon St., London, UK;(3) Conservation Unit, University of Northumbria, Newcastle-Upon-Tyne, UK;(4) Mechanical Engineering Department, Imperial College of Science Technology and Medicine, University of London, London, UK |
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| Abstract: | The thermal degradation of new, and artificially aged fine Ulster linen and archival linen specimens from 19th century paintings
were compared using thermogravimetric analysis and differential scanning calorimetry. Thermal degradation data from new and
artificially aged linen were found to be similar in nature. Archival specimens showed a decreased major degradation temperature,
an increase in char remaining at the end of the experiment and some evidence of a depressed glass transition temperature.
These indicate natural ageing through chain scission. Evidence of a two-stage degradation process was observed in some archival
specimens suggesting that an unknown additive was present.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | thermal degradation linen artificial ageing paintings |
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