Studies on the dyeing behaviour of reactive dyes on oxidized linen grafted with HBP-NH_2

Selectively oxidized linen fabrics were grafted with amine-terminated hyperbranched polymer(HBP-NH2) and then dyed with reactive dyes.Factors exerting influence on salt-free reactive dyeing behaviours of oxidized linen fabrics grafted with HBP-NH2 were discussed,including oxidized time,concentration of HBP-NH2 solution,pH value reaction time and temperature.The results showed that oxidized with sodium periodate 6 g/L,at 40 ℃ for 10 min and then grafted with HBP-NH2 5 g/L under pH value 9 at 80 ℃ for 10 min could achieve satisfied dyeing properties when dyed with reactive dyes without salt.