摘要
纸纱作为一种新兴的纺织材料,因其环保性和优异的物理特性,具有广阔的应用前景。为了探究活性染料上染纸纱的染色机理,通过测定上染速率曲线和吸附等温线,研究了在不同温度下活性红R-2BF上染纸纱的染色动力学和染色热力学行为。研究结果表明:活性红R-2BF在纸纱上的染色动力学模型符合准二级动力学方程。在40℃、60℃和80℃下,活性红R-2BF在纸纱上的扩散系数分别为5.969×10^(-11)m^(2)·min^(-1)、6.751×10^(-11)m^(2)·min^(-1)、8.395×10^(-11)m^(2)·min^(-1),对应的半染时间分别为23.4 min、21.2 min和17.3 min,这一结果表明温度升高有助于促进染料分子在纸纱上的扩散,进而缩短半染时间。同时,活性红R-2BF在纸纱上的染色热力学模型符合弗莱因德利胥型吸附等温线,温度升高不利于染色平衡吸附量的提高,温度的升高不会改变活性红R-2BF在纸纱上的吸附类型。
As an emerging textile material,paper yarn has broad application prospects due to its environmental protection and excellent physical properties.In order to explore the dyeing mechanism of paper yarn dyed with reactive dyes,the dyeing kinetics and thermodynamic behavior of paper yarn dyed with reactive red R-2BF at different temperatures were studied by determining the dye uptake rate curve and adsorption isotherm.The experimental results showed that the dyeing kinetics model of reactive red R-2BF on paper yarn was in line with the quasi-second-order kinetic equation.At 40℃,60℃and 80℃,the diffusion coefficients of reactive red R-2BF on paper yarn were 5.969×10^(-11)m^(2)·min^(-1),6.751×10^(-11)m^(2)·min^(-1),and 8.395×10^(-11)m^(2)·min^(-1),respectively,and the corresponding half-dyeing times were 23.4 min,21.2 min and 17.3 min,respectively.The results indicated that the increase of temperature was helpful to promote the diffusion of dye molecules on paper yarn and shorten the half-dyeing time.At the same time,the dyeing thermodynamic model of reactive red R-2BF on paper yarn met Freundlich adsorption isotherm.The increase of temperature was not conducive to the increase of dyeing equilibrium adsorption amount and did not change the adsorption type of reactive red R-2BF on paper yarn.
作者
吴玲娅
王琰
徐楚琪
祝国成
WU Lingya;WANG Yan;XU Chuqi;ZHU Guocheng(College of Textile Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018;Xiangshan Knitting Research Institute,Zhejiang Sci-Tech University,Xiangshan 315700;Zhejiang-Czech Joint Laboratory of Advanced Fiber Materials,Zhejiang Sci-Tech University,Hangzhou 310018)
出处
《纺织科学与工程学报》
2025年第5期1-7,共7页
Journal of Textile Science and Engineering
基金
高等学校学科创新引智计划项目(D21011)。
关键词
纸纱
活性染料
染色动力学
染色热力学
paper yarn
reactive dyes
dyeing kinetics
dyeing thermodynamics
