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《Dyeing & Finishing》 2007-17
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Salt-free reactive dyeing of cotton fabric modified with HBP-NH_2 agent

ZHANG Feng1,2,CHEN Yu-yue1,ZHANG De-suo1,HUA Yan-rong11.College of Material Engineering,Soochow University,Suzhou 215021,China;2.Department of Textile Engineering,Shazhou Institute of Technology,Zhangjiagang 215600,China  
The self-made amino-terminated hyperbranched polymer(HBP-NH2) was applied to modify cotton fabric in order to achieve salt-free dyeing with reactive dyes.The surface ζ-potential in water solution,dyeing thermodynamics and kinetics with reactive dyestuffs and hue changes of the modified cotton fabrics were examined.Results showed that the ζ-potential in water solution was positive at pH value below 7.5.The dyeing behaviors of Reactive Brilliant Yellow A-4GLN on treated cotton fabric were found to follow Langmuir-type adsorption curve,adsorption constant(K) and saturated adsorbing capacity(S) decreased along with the increase in temperature,the dyeing entropy(ΔH) was-4.59 kJ/mol.HBP-NH2 modification can impart cotton fabric better dyeing rate,equilibrium dye uptake and diffusion coefficients,while lead to a slight hue changes with reactive dyestuffs.
【Fund】: 国家教育部“高等学校博士学科点专项科研基金”项目 编号:20060285004
【CateGory Index】: TS193.632
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