Abstract
Cellulose acetate film loses acetate groups on ageing which results in the formation of damaging acetic acid. Water-Leach Free Acidity Test (WLFAT) is the definitive technique to quantify acidity, but requires 1g film and 26 hours. ATR-FTIR spectroscopy is a non-destructive, rapid technique which was used to relate the concentration of C=O groups lost during deacetylation to the concentration of reference C-H groups. Comparison of WLFAT and ATR-FTIR showed similar trends in deterioration rate of new, slightly- and highly degraded films. Both techniques were equally effective at quantifying the degradation of film, though ATR-FTIR could not quantify onset of autocatalysis.
Original language | English |
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Title of host publication | International Council of Museums-Conservation Committee 14th Triennial Meeting 2005 The Hague |
Volume | 1 |
Place of Publication | London |
Publisher | James & James |
Publication date | 4 Sept 2005 |
Pages | 548-555 |
ISBN (Print) | 1-84407-253-3 |
Publication status | Published - 4 Sept 2005 |
Keywords
- deacetylation vinegar-syndrome Water-Leach Free Acidity Test ATR-FTIR film cellulose acetate