Abstract
Nanofibres enjoy broad technical applications in filtration, medical, biosensing, functional, and high‐performance textiles. Recent trends/developments in nanofibre research have also focused on the coloration of nanofibres. In this context, polyurethane nanofibre webs, which have been commercially successful, were electrospun and dyed with a high‐energy‐level CI Disperse Red 167:1 dye and a low‐energy‐level CI Disperse Blue 56 dye by the pad‐dry‐cure method. The dyed polyurethane nanofibres exhibited good colour strength values with acceptable colour fastness. Results revealed that the high‐energy‐level dye produced slightly better colour strength than the lower‐energy‐level dye. Further, scanning electron microscopy images showed that the morphologies of dyed and undyed nanofibres were almost identical.
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