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HBP—NH_2接枝氧化棉织物无盐染色机制
引用本文:张峰,陈宇岳,张德锁,华琰蓉,赵兵. HBP—NH_2接枝氧化棉织物无盐染色机制[J]. 纺织学报, 2008, 29(11): 71-75
作者姓名:张峰  陈宇岳  张德锁  华琰蓉  赵兵
作者单位:苏州大学材料工程学院;沙洲工学院纺织工程系
基金项目:教育部高等学校博士学科点专项科研基金,江苏省研究生培养创新工程项目 
摘    要:为揭示HBP—NH2接枝氧化棉织物(HGCF)实现活性染料无盐染色的机制,研究水溶液中HGCF纤维表面的zeta电位、HGCF活性染料染色热力学、染色动力学以及HGCF染色色光的变化等。结果表明:当pH<6.5时,在水溶液中HGCF纤维表面的zeta电位为正;HGCF对活性艳黄A-4GLN的吸附符合Langmuir模型,Langmuir吸附常数和饱和吸附量都随着温度的升高而降低,染色热为-4.51 kJ/mol;与未接枝棉织物相比,HBP—NH2对氧化棉织物的接枝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的接枝改性对棉织物活性染料无盐染色色光略有影响。

关 键 词:端氨基超支化合物  氧化棉织物  无盐染色  染色热力学  染色动力学
收稿时间:2007-11-15;

Mechanism of salt-free dyeing of HBP--NH2 grafted oxidized cotton fabrics
ZHANG Feng,CHEN Yuyue,ZHANG Desuo,HUA Yanrong,ZHAO Bing. Mechanism of salt-free dyeing of HBP--NH2 grafted oxidized cotton fabrics[J]. Journal of Textile Research, 2008, 29(11): 71-75
Authors:ZHANG Feng  CHEN Yuyue  ZHANG Desuo  HUA Yanrong  ZHAO Bing
Affiliation:1.School of Material Engineering;Soochow University;Suzhou;Jiangsu 215021;China;2.Department of Textile Engineering;Shazhou Institute of Technology;Zhangjiagang;Jiangsu 215600;China
Abstract:In order to reveal the mechanism of salt-free dyeing of HBP—NH_2 grafted oxidized cotton fabrics(HGCF) with reactive dyes,the ζ-potential of HGCF in the liquid phase,dyeing thermodynamics,dyeing dynamics and hue changes of HGCF dyed with reactive dyes were examined.As a result,the ζ-potential of the HGCF is positive at pH′s lower than 6.5.The dyeing behaviour of reactive brilliant yellow A-4GLN on HGCF was found to follow a Langmuir-type adsorption curve,and the value of adsorption constant and saturated adsorbing capacity decreased when the temperature was raised,the dyeing entropy is(-4.51 kJ/mol.) Compared to ungrafted cotton fabrics,HBP—NH_2 grafted oxidized cotton fabrics can improve the speed of dyeing,the equilibrium dye uptake and the diffusion coefficients.Meanwhile,there was slight hue changes on HGCF dyed with reactive dyes in salt-free dyeing.
Keywords:
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