Emission profiles from polymeric materials : characterised by thermal desorption-gas chromatography

Mitchell, Gemma and Higgitt, Catherine and Gibson, Lorraine (2014) Emission profiles from polymeric materials : characterised by thermal desorption-gas chromatography. Polymer Degradation and Stability, 107. ISSN 0141-3910

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Abstract

Since being recognised as a potential emissive source, plastics in heritage collections are being investigated to understand the chemical compounds they release and how they might affect the stability of other heritage objects. There is a requirement for non-invasive methods of analyses to identify unknown plastics and the emitted volatiles they generate. Therefore, Tenax-TA sampling tubes were used to collect the emitted volatiles from 41 samples of 9 polymer types of varying formulation, provenance and age. Thermal desorption-gas chromatography coupled with mass spectrometry (TD-GC/MS) has been successfully used to separate and identify the emissions of the 41 samples at 23 C, after heating to 70 C and after accelerated degradation.