Dyeing in the presence of free radical initiators. Part 5-the effects of radical initiators on nylon 6.6

  • Burkinshaw S
  • Lu J
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Abstract

The modification of nylon 6.6 imparted by four radical initiators (ammonium persulphate, potassium periodate, thiourea dioxide and glucose) is discussed in terms of their effects on the amino end-group content and tensile strength of the fibre. Fourier transform IR (FTIR) attenuated total reflectance (ATR) spectroscopy was employed to examine the extent of modification of the fibre imparted by ammonium persulphate; second-order derivative spectroscopy was used to secure higher resolution of the ATR spectra. Evidence obtained from dyeings carried out using a commercial anthraquinone disperse dye in the presence of ammonium persulphate suggests that the dye may be covalently attached to the fibre. © 1994.

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Authors

  • S. M. Burkinshaw

  • J. G. Lu

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