Classifying degraded modern polymeric museum artefacts by their smell

Katherine Curran, Mark Underhill, Josep Grau-Bové, Tom Fearn, Lorraine T. Gibson, Matija Strlič

Research output: Contribution to journalArticle

12 Citations (Scopus)
30 Downloads (Pure)

Abstract

Volatile organic compound (VOC) analysis is a successful method for diagnosing medical conditions such as Alzheimer’s disease. However, despite its relevance to heritage, it has found little application in museums. We report the first use of VOC analysis to ‘diagnose’ degradation in modern polymeric museum artefacts. Modern polymers are increasingly found in museum collections but pose serious conservation difficulties due to unstable and widely varying formulations. Solid-phase microextraction gas chromatography/mass spectrometry and linear discriminant analysis were used to classify samples according to the length of time they had been artificially degraded. Classification accuracies of 50-83% were obtained after validation with separate test sets. The method was applied to three artefacts from collections at Tate to detect evidence of degradation. This novel approach could be used for any material in heritage collections and more widely in the field of polymer degradation.
Original languageEnglish
Number of pages6
JournalAngewandte Chemie
Early online date2 Mar 2018
DOIs
Publication statusE-pub ahead of print - 2 Mar 2018

Keywords

  • gas chromatography
  • mass spectrometry
  • heritage science
  • volatile organic compound analysis
  • plastics conservation

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