Protection of lyocell fibres against fibrillation; influence of dyeing with bis-monochloro-s-triazinyl reactive dyes

Four bis-monochlorotriazinyl (bis-MCT) reactive dyes, including Procion Orange H-ER, together with Remazol Black B, were applied, in turn, to lyocell fibres and their wet abrasion resistance (Nass-Scheuer-Festigkeit) measured. The bis-MCT dyes performed poorly, showing that little cross-linking had occurred and all were inferior to Remazol Black B. The cross-linking propensity of Procion Orange H-ER was not superior to the other bis-MCT dyes evaluated. A possible explanation for the apparent superiority of Procion Orange H-ER in a recent paper published in this journal may lie with fabric construction but not with the suppression of fibrillation once it has occurred.