Abstract
This study aimed to graft a commercial amino-terminated hyperbranched polymer (AHP), specifically a low molecular weight branched polyethylenimine, onto cotton fibres through partial oxidation of cellulose with periodate. The primary objective was to assess the feasibility of achieving salt-free or low-salt dyeing of cotton with reactive dyes. The research investigated the washing, rubbing, and light fastness of modified cotton fabrics dyed in the absence or with a low-salt promoter, comparing the results with conventional dyeing methods. The findings indicated that grafting AHP through partial oxidation significantly reduced the required salt levels for dyeing with reactive dyes while maintaining colour intensity and comparable washing fastness properties.
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