黑果枸杞花色苷染色羊毛织物的热力学和动力学分析

Adsorption thermodynamics and kinetics of anthocyanin in Lycium ruthenicum Murray extracts on wool fabrics

为了实现黑果枸杞花色苷对羊毛织物的染色和功能性整理,分别使用80%乙醇/水混合溶液和蒸馏水提取黑果枸杞中的花色苷,并对2种提取液进行傅里叶红外光谱表征。用提取液对羊毛织物进行染色,并通过吸附反应模型研究黑果枸杞花色苷对羊毛织物的吸附机制。实验结果表明:黑果枸杞提取液中的主要化学成分是花色苷类化合物,不同溶剂提取的花色苷结构存在微小差别。吸附热力学和动力学的研究结果发现,黑果枸杞花色苷对羊毛织物的染色过程符合Langmuir和Freundlich等温吸附模型以及准二级动力学模型。

In order to achieve the dyeing and functional finishing of wool fabrics with anthocyanins from Lycium ruthenicum Murray which were extracted using 80%ethanol/water mixed solution and distilled water,respectively,and both extracts were characterized by Fourier transform infrared spectroscopy(FTIR).And then according to the dyeing kinetics and thermodynamics of wool fabrics dyed with anthocyanins from Lycium ruthenicum Murray extracts,dyeing mechanism was explored.The results indicate that the main chemical components in the extract of Lycium ruthenicum Murray were anthocyanins,and there were slight differences in the structure of anthocyanins extracted with different solvents.Through the study of adsorption thermodynamics and kinetics,it is found that the dyeing process of wool fabrics with anthocyanins follows Langmuir and Freundlich isothermal adsorption models and pseudo-second-order kinetic model.