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  • 1 School of Biological and Chemical Sciences, Birkbeck College, University of London Malet St., London WC1E 7HX Malet St., London WC1E 7HX
  • 2 School of Biological and Chemical Sciences, Birkbeck College, University of London Malet St., London WC1E 7HX Malet St., London WC1E 7HX
  • 3 X-AT Engineering, University of Exeter North Park Rd.,Exeter North Park Rd.,Exeter
  • 4 School of Biological and Chemical Sciences, Birkbeck College, University of London Malet St., London WC1E 7HX Malet St., London WC1E 7HX
  • 5 Bone and Mineral Centre, Dept. of Medicine, University College London London WC1E 6JJ London WC1E 6JJ
  • 6 Bone and Mineral Centre, Dept. of Medicine, University College London London WC1E 6JJ London WC1E 6JJ
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Summary  

Dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC) and thermogravimetry (TG) have been used to characterise model tapestries, especially woven for the EC-funded project (MODHT) and to historic tapestries in royal palaces and museums. Modulus values of woollen threads from model tapestries are reported and the effects of traditional dyeing and mordanting processes quantified. TG, particularly of black woollen threads showed alterations in thermal stability. Tests of creep on immersion in water and subsequent heating to 90C and on exposure to a controlled relative humidity programme were also used to rank these effects. Modulus values of historic woollen samples were also obtained and DSC studies of model and historic silk samples are reported together with preliminary atomic force microscopy (AFM) images of silk fibres.