摘要
用自制的端胺基超支化合物(HBP-NH2)对棉织物进行阳离子改性,以实现棉织物活性染料的无盐染色。研究了在水溶液中改性棉纤维表面的ζ电位、改性棉织物活性染料染色热力学和动力学以及改性棉织物染色色光的变化等。试验发现,当pH值<7.5时,水溶液中改性棉纤维表面的ζ电位为正;改性棉织物对活性艳黄A-4GLN的吸附符合Langmuir模型,Langmuir吸附常数K和饱和吸附量S都随温度升高而降低,染色热ΔH为-4.59 kJ.mol-1。结果表明,HBP-NH2对棉织物的改性可以加快上染速率,提高平衡上染百分率,增大表观扩散系数;HBP-NH2的应用对棉织物活性染料染色色光略有影响。
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.
出处
《印染》
北大核心
2007年第17期1-4,共4页
China Dyeing and Finishing
基金
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
关键词
染色
活性染料
棉织物
阳离子改性
dyeing
reactive dyes
cotton fabric
cationic modification
