Jean Shin layers wool sweaters on a wall in a cuddly color spectrum, unraveling their yarn to suggest both a network of personal relationships and a spreading diaspora of parallel lives.
There is a relationship between oxidation products and photo-ageing which can be observed when comparing the spectra for an artificially light aged yarn and historic yarn to an unaged wool yarn (Fig. 6).
The duration of heat-setting influenced the tensile properties and DSC spectra for both types of yarn.
FTIR spectra was collected for 180 yarn fibres from historic tapestry fragments that were dyed a range of colours during original manufacture, for 5 model undyed and unaged wool tapestry yarns and 5 undyed artificially light degraded tapestry yarns (aged at 600 h of 150,000 lx in a Xenotest light aging chamber) from the MODHT project.
Fig. 4 NIR spectrum of a historic wool yarn.
Migration, the artist's latest work, was fashioned over night from 1,180 strands of yarn into a spectrum of 14 spun shades above the beach bound pedestrians of this Santa Monica Pier pathway.
Flying line can be braided Dacron or Spectra fibre, a low-stretch synthetic yarn of great tensile strength, which is used exclusively for power flying.
The FTIR spectra for an unaged and undyed yarn sample had lower peak intensities for what appears to be a mixture of CM and CA components.
b 3 spectra were recorded per measurement for "1" yarns and averaged for each yarn, c averaged raw NIR spectra for 5 yarns, d 5 adjacent yarns in "2" were unravelled and cut to approximately 0.5 mm, with 3 FTIR spectra recorded for each piece from one yarn and averaged, e averaged raw FTIR spectra of 5 yarns from area "2" adjacent to "1".
Each piece of yarn was analysed separately and the spectra for all pieces from one yarn were averaged.
Each model was later validated using an independent test set of historic fragment yarn samples that had not been used for calibration with known oxidation ratios calculated from the results of FTIR spectra.
