乙醇/水体系中改性蚕丝织物的活性染料染色动力学和热力学

doi:10.13475/j.fzxb.20190500207

纺织学报 ›› 2020, Vol. 41 ›› Issue (06): 86-92.doi: 10.13475/j.fzxb.20190500207

乙醇/水体系中改性蚕丝织物的活性染料染色动力学和热力学

张炜¹, 毛庆楷¹, 朱鹏¹, 柴雄², 李惠军¹()

1.新疆大学纺织与服装学院, 新疆乌鲁木齐 830046
2.上海海事大学商船学院, 上海 201306

收稿日期:2019-05-04 修回日期:2020-02-26 出版日期:2020-06-15 发布日期:2020-06-28
通讯作者: 李惠军
作者简介:张炜(1990—),男,硕士生。主要研究方向为清洁化染整技术。
基金资助:
2019年自治区创新环境(人才、基地)建设专项(自然科学基金)联合基金项目(2019D01C077)

Kinetic and thermodynamic of reactive dye study on silk fabric modification in ethanol/water system

ZHANG Wei¹, MAO Qingkai¹, ZHU Peng¹, CHAI Xiong², LI Huijun¹()

1. College of Textiles and Clothing, Xinjiang University, Urumqi, Xinjiang 830046, China
2. Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China

Received:2019-05-04 Revised:2020-02-26 Online:2020-06-15 Published:2020-06-28
Contact: LI Huijun

摘要/Abstract

摘要：

为进一步提升蚕丝织物的染色深度,利用活性红3BS在乙醇/水体系中对经阳离子表面活性剂改性的蚕丝织物进行染色,分析了染色温度、pH值、染料用量和染色时间对改性蚕丝织物性能的影响,同时也探究了改性蚕丝织物在乙醇/水体系中的动力学和热力学机制。试验结果表明:染色温度是影响改性蚕丝织物K/S值、明暗值、红绿值、黄蓝值和总色差值最大的因素,且随着染色温度的升高,染色速率常数先增大后降低,饱和吸附量逐渐增大,而半染时间、染料分配系数和标准亲和力逐渐减小;改性蚕丝织物的染色焓为-28.693 kJ/mol,染色熵为-0.066 kJ/(℃·mol), 改性蚕丝织物在乙醇/水中的染色过程为放热反应;改性后的蚕丝织物染色深度有所提升,各项染色牢度基本未发生变化。

关键词: 阳离子表面活性剂, 蚕丝织物, 乙醇/水体系, 动力学, 热力学, 活性染料

Abstract:

In order to further improve the dyeing depth of silk, on the dyeing of cationic surfactant-modified silk in the ethanol/water system by Reactive Red 3BS was reported. The effects of temperature, pH value, material ratio (o.w.f) and time on the modified silk were analyzed. The kinetics and thermodynamic mechanisms of the modified silk in the ethanol/water system were explored. The experimental results show that the temperature is the factor influencing the K/S value, the light and dark value, the red and green value, the yellow and blue value and the total color difference of the modified silk. As the temperature increase, the dyeing rate constant demonstrates an increase and then decreased afterwards. The saturated adsorption amount, partition coefficient and standard affinity gradually increases while the half dyeing time gradually decreases. The dyeing enthalpy is -28.693 kJ/mol, and the dyeing entropy of the modified silk is -0.066 kJ/(℃·mol), indicating that the dyeing process of the modified silk in ethanol/water is exothermic. It is noted that although the dyed depth of the modified silk was improved, the dyeing fastness shows no substantially change.

Key words: cationic surfactant, silk fabric, ethanol/water system, dynamics, thermodynamics, reactive dye

中图分类号:

TS193

张炜, 毛庆楷, 朱鹏, 柴雄, 李惠军. 乙醇/水体系中改性蚕丝织物的活性染料染色动力学和热力学[J]. 纺织学报, 2020, 41(06): 86-92.

ZHANG Wei, MAO Qingkai, ZHU Peng, CHAI Xiong, LI Huijun. Kinetic and thermodynamic of reactive dye study on silk fabric modification in ethanol/water system[J]. Journal of Textile Research, 2020, 41(06): 86-92.

图/表 13

表1

图1

图2

表2

活性红3BS在改性蚕丝织物上的吸附动力学参数"

温度/℃	t-t/q_t拟合线性方程	染色速率常数k/(g·min·mg^-1)	饱和吸附量 $q ∞$ /(mg.g^-1)	半染时间 $t 1 / 2$ /min
60	y=0.064 60x+1.310 92	0.003 18	15.479 88	20.314 46
75	y=0.052 39x+0.768 95	0.003 57	19.087 61	14.675 07
90	y=0.045 47x+0.650 49	0.003 18	21.992 52	14.298 74

表2

图3

Tab.3

图4

表3

表4

图5

图6

图7

表5

参考文献 11

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试验号		温度/℃	pH值	染料用量/ %(o.w.f)	时间/min	K/S值	L^*	a^*	b^*	DE^*
1		60	2	1	30	1.44	65.12	37.64	-8.17	49.27
2		60	6	2	40	3.37	55.76	47.51	-8.32	62.10
3		60	10	3	50	3.94	52.51	46.39	-8.69	63.29
4		75	2	2	50	7.20	47.28	51.62	-6.40	69.83
5		75	6	3	30	8.78	45.52	55.12	-4.62	73.18
6		75	10	1	40	4.04	50.83	49.57	-7.66	66.40
7		90	2	3	40	8.98	45.53	55.18	-4.64	73.23
8		90	6	1	50	6.62	49.07	53.89	-5.55	70.25
9		90	10	2	30	6.07	49.96	52.53	-6.66	68.92
	K₁	2.92	5.87	4.03	5.43
K/S值	K₂	6.67	6.26	5.55	5.46
	K₃	7.22	4.68	7.23	5.92
	极差R	4.30	1.58	3.20	0.49
	K₁	57.80	52.64	55.01	53.53
L^*	K₂	47.88	50.12	51.00	50.71
	K₃	48.19	51.10	47.85	49.62
	极差R	9.92	2.52	7.16	3.91
	K₁	43.85	48.15	47.03	48.43
a^*	K₂	52.10	52.17	50.55	50.75
	K₃	53.87	49.50	52.23	50.63
	极差R	10.02	4.02	5.20	2.32
	K₁	-8.39	-6.40	-7.13	-6.48
b^*	K₂	-6.23	-6.16	-7.13	-6.87
	K₃	-5.62	-7.67	-5.98	-6.88
	极差R	2.77	1.51	1.15	0.40
	K₁	58.22	64.11	61.97	63.79
DE^*	K₂	69.80	68.51	66.95	66.91
	K₃	70.80	66.20	66.20	67.79
	极差R	12.58	4.4	4.98	4.00

温度/℃	分配系数K	标准亲和力-Δμ⁰/ (kJ·mol^-1)
60	11.256 98	6.706
75	6.870 85	5.579
90	4.778 27	4.722

处理条件	K/S值	标准偏差S
未改性	7.64	0.197
改性	8.13	0.234

织物	耐皂洗色牢度			耐摩擦色牢度
织物	棉沾色	毛沾色	变色	干摩	湿摩
未改性蚕丝织物	4	4~5	4~5	4~5	4
改性蚕丝织物	4	4	4~5	4	4

乙醇/水体系中改性蚕丝织物的活性染料染色动力学和热力学

Kinetic and thermodynamic of reactive dye study on silk fabric modification in ethanol/water system

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