The surface chemical analysis and bulk analysis were conducted for fibres regenerated from wastegarments and treated with iodine solution. The aim was to assess the fibre accessibility by theiodine solution and ascertain the location of the reagent within the fibres. X-ray PhotoelectronSpectroscopy (XPS) analysis indicated that the fibres regenerated from indigo dyed waste denimgarments (ReCell-Denim) had a relatively high accessibility by the iodine solution compared to thestandard lyocell, ReCell-1 and ReCell-2 fibres. With the exception of ReCell-Denim, the standardlyocell, ReCell-1 and ReCell-2 fibre鈥檚 iodine sorption values correlated well with the percentagecrystallinity. The high accessibility of the ReCell-Denim fibres was attributed to the presence ofthe positively charged nitrogen from the indigo dyes that improved the substantivity of the fibresto the iodine solution. The iodine sorption of the fibres is relatively higher in the bulk compared tothe fibre surface.
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