Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

Correlation of tensile strength testing data to size exclusion chromatography data

A tapestry is usually hung at 90? to the angle at which it is woven on the loom. This means that the warp direction in a displayed tapestry is horizontal and the weft direction vertical. The silk and wool yarns of the weft direction carry the woven image, and also bear the weight of the enormous textile. In addition to the material preservation of a tapestry, the preservation of context of use is of great importance. A tapestry comprises a pictorial image, which were designed to be hunged. The physico-mechanical properties of the textile, such as the tensile strength, are therefore vital to the continued utility and understanding of the piece. To measure the tensile strength of a historic tapestry directly is problematic - large samples size and many replicates are required for reproducible results. Removal of large samples is incompatible with conservation, so the project aimed to develop innovative analytical techniques to provide chemical information about a fibre, which could be directly related to overall physical properties. This has been achieved with the size exclusion chromatography technique developed by HRP. A linear relationship between average molecular weight and elongation has been established through the analysis of model tapestries.

Reported by

Historic Royal Palaces
Apt. 37, Hampton Court Palace
KT8 9AU Surrey
United Kingdom
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