双亚芴基醌式噻吩染料对棉织物的染色性能

doi:10.13475/j.fzxb.20171008806

摘要/Abstract

摘要：

为开发棉织物染色用环保型直接染料，研究了自制双亚芴基醌式噻吩染料SR对棉织物的染色性能，探讨了染色温度、时间、染料用量和元明粉质量浓度对上染效果的影响，并优化了染色工艺条件；通过准二级动力学模型对染色动力学进行了研究；运用Freundlich热力学吸附方程对实验数据进行了拟合分析。结果表明，染料用量为1%（o.w.f.）时，染料SR上染棉织物的优化工艺条件为：元明粉质量浓度10 g/L，染色温度 55 oC，染色时间 60 min，实验浴比1:50，该条件下平衡上染率为71.6%，色深（K/S）值达18.76；染料SR对棉织物的染色符合准二级动力学模型，且染色温度越高，染料SR染色速率常数越大，半染时间越小，扩散系数越大；染料SR上染棉织物的吸附等温线符合Freundlich热力学吸附模型。

关键词: 双亚芴基醌式噻吩染料, 棉织物, 染色, 染色动力学

Abstract:

In order to develop environmentally friendly direct dyes for cotton fabrics, a self-made difluorenylidene quinoidal thiophene dye SR was applied to dye cotton fabric. The effects of dyeing temperature, time, dye dosage and mass concentration of sodium sulfate on dyeing performance were investigated and dyeing condition was optimized. Dyeing dynamics were studied by using pseudo second-order kinetic model. Besides, relevant experimental data were analyzed by using Freundlich adsorption isotherm model. The results showed that proper dyeing condition at 1% (o.w.f.) of dye concentration are 55 oC of temperature, 60 min of contact time, 10 g/L of mass concentration of sodium sulfate and 1:50 of liquor ratio. Under the conditions, 70.7% of equilibrium dye-uptake and 18.76 of color depth are achieved. The dyeing dynamics can be described with pseudo second-order kinetic model. As the dyeing temperature increase, dyeing rate constant as well as diffusion coefficient increase, accompanied with the decrease of half-dyeing time. The Freundlich type thermodynamic adsorption model fits well to describe the adsorption behavior of dye SR on cotton fabric.

Key words: difluorenylidene quinoidal thiophene dye, cotton fabric, dyeing, dyeing dynamics

蔡金芳陈维国崔志华江华. 双亚芴基醌式噻吩染料对棉织物的染色性能[J]. 纺织学报, 2018, 39(10): 81-85.

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