靛蓝分散体的制备及其还原-氧化过程

doi:10.13475/j.fzxb.20210307907

纺织学报 ›› 2022, Vol. 43 ›› Issue (04): 84-89.doi: 10.13475/j.fzxb.20210307907

靛蓝分散体的制备及其还原-氧化过程

何颖婷¹^,², 李敏¹^,², 付少海¹^,²^,³()

1.江苏省纺织品数字喷墨印花工程技术研究中心, 江苏无锡 214122
2.生态纺织教育部重点实验室(江南大学), 江苏无锡 214122
3.国家先进印染技术创新中心, 山东泰安 271000

收稿日期:2021-03-22 修回日期:2021-12-03 出版日期:2022-04-15 发布日期:2022-04-20
通讯作者: 付少海
作者简介:何颖婷(1997—),硕士生。主要研究方向为还原染料的超细化及染色性能。
基金资助:
江苏省自然科学基金项目(BK20191334);国家先进印染技术创新中心科研基金项目(ZJ2021A08)

Preparation and reduction-oxidation process of indigo dispersant

HE Yingting¹^,², LI Min¹^,², FU Shaohai¹^,²^,³()

1. Jiangsu Engineering Research Center for Digital Textile Inkjet Printing, Wuxi, Jiangsu 214122, China
2. Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
3. National Engineering Research Center for Dyeing and Finishing of Textiles, Taian, Shandong 271000, China

Received:2021-03-22 Revised:2021-12-03 Published:2022-04-15 Online:2022-04-20
Contact: FU Shaohai

摘要/Abstract

摘要：

针对靛蓝染色织物得色量低的问题,对靛蓝的分散工艺进行改进。研究了分散剂种类及质量分数对靛蓝分散稳定性及染色性能的影响;分析了染料粒径、还原剂质量浓度、温度、pH值对靛蓝还原效果及速率的影响;探讨了氧化方式对染色织物色牢度的影响。结果表明:采用质量分数为1.5%的分散剂DM-1501制备的靛蓝分散体,其染色棉织物K/S值达到11.92;粒径为280 nm左右的靛蓝分散体在保险粉质量浓度为1 g/L,还原温度为 80 ℃, pH值为11的还原条件下,还原液中隐色体吸光度达到最大,半还原时间减少至0.2 min; 采用空气氧化得到的靛蓝染色棉织物的耐干摩擦色牢度为4级,耐湿摩擦色牢度为3级,明显优于双氧水氧化得到的染色织物。

关键词: 靛蓝分散体, 分散工艺, 还原-氧化过程, 色牢度, 染色性能, 棉织物

Abstract:

In view of the low color yield of indigo dyeings, the preparation process of indigo dispersant was improred. The effects of the type and dosage of dispersant on the dispersion stability and dyeing properties of indigo dispersant were investigated. The effects of dye particle size, reductant dosage, temperature and pH value on the indigo reduction rate were analyzed, and the effect of oxidation methods on color fastness of dyed fabrics was discussed. The experimental results show that the dyeing of indigo dispersion with 1.5% dispersant DM-1501 achieves K/S value of 11.92. Under the condition of 1 g/L sodium hydrosulfite, 80 ℃ of reduction temperature, pH value is 11, the absorbance of leuco indigo in the reduction solution reaches the maximum and the half-reduction time of indigo dispersant with particle size of about 280 nm is reduced to 0.2 min. The cotton fabric oxidized by air reach the dry rubbing color fastness of grade 4, wet rubbing color fastness of grade 3, which are better than the fabric oxidized by H₂O₂.

Key words: indigo dispersant, dispersing, reduction-oxidation process, color fastness, dyeing property, cotton fabric

中图分类号:

TS193.5

何颖婷, 李敏, 付少海. 靛蓝分散体的制备及其还原-氧化过程[J]. 纺织学报, 2022, 43(04): 84-89.

HE Yingting, LI Min, FU Shaohai. Preparation and reduction-oxidation process of indigo dispersant[J]. Journal of Textile Research, 2022, 43(04): 84-89.

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分散剂		粒径/nm	结晶度/%	粒径变化率/%			K/S值
种类	质量分数/%	粒径/nm	结晶度/%	储存	热稳定	离心	K/S值
无	0		62.97	染料发生团聚沉淀			10.33
NNO	1.5	314.1	73.99	2.42	17.16	-5.53	11.56
DM-1501	1.5	282.1	75.11	8.36	7.90	-6.19	11.92
AD-4600/DM-1501	1.5 (1∶1)	283.2	66.26	48.52	48.41	-7.87	10.82
平平加O/DM-1501	1.5 (1∶1)	237.6	69.91	3.37	65.99	-38.07	11.20

DM-1501质量分数/%	粒径/nm	Zeta电位/mV	结晶度/%	粒径变化率/%			黏度/(mPa·s)	K/S值
DM-1501质量分数/%	粒径/nm	Zeta电位/mV	结晶度/%	储存	热稳定	离心	黏度/(mPa·s)	K/S值
0.5	292.4	-44.9	68.89	10.20	2.99	-22.98	2.16	11.13
1.0	235.2	-43.9	66.48	7.33	8.67	-13.93	2.67	11.30
1.5	205.0	-43.9	69.76	5.30	7.87	-5.71	3.27	11.41
2.0	188.2	-43.6	67.62	5.16	8.52	-1.20	8.01	11.07
3.0	186.4	-44.3	64.39	3.28	4.53	-0.11	14.81	11.14

H₂O₂质量分数/%	氧化时间/min	a^*	b^*	C^*	K/S值	耐摩擦色牢度/级		耐皂洗色牢度/级		皂洗残液吸光度
H₂O₂质量分数/%	氧化时间/min	a^*	b^*	C^*	K/S值	干	湿	棉沾色	变色	皂洗残液吸光度
空气氧化	22.0	-1.75	-19.95	20.03	11.92	4	3	4~5	4~5	0.464
5	2.0	-0.09	-20.63	20.63	9.93	3~4	2~3	4~5	4~5	0.636
8	1.5	0.07	-20.04	20.05	10.78	3~4	2~3	4~5	4~5	0.643
10	<1.0	0.18	-20.34	20.34	11.08	3~4	2~3	4~5	4~5	0.662
15	<1.0	0.58	-19.93	19.94	11.13	3~4	2~3	4	4	0.689
20	<1.0	0.84	-19.78	19.80	11.43	3	2	4	4	0.690

靛蓝分散体的制备及其还原-氧化过程

Preparation and reduction-oxidation process of indigo dispersant

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