5-(二甲氨基)-2-甲基-5-氧戊酸甲酯在超临界二氧化碳流体染色中的应用  

Application of methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate in supercritical carbon dioxide fluid dyeing with disperse dyes

作　　者：葛怀富 吴伟 王健 徐红[1,2,4] 毛志平 GE Huaifu;WU Wei;WANG Jian;XU Hong;MAO Zhiping(Key Laboratory of Science and Technology of Eco-Textile,Ministry of Education,Donghua University,Shanghai 201620,China;College of Chemistry and Chemical Engineering,Donghua University,Shanghai 201620,China;Jifa Group Co.,Ltd.,Qingdao,Shandong 266000,China;Innovation Center for Textile Science and Technology,Donghua University,Shanghai 201620,China;National Engineering Research Center for Dyeing and Finishing of Textiles,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学生态纺织教育部重点实验室,上海201620 [2]东华大学化学与化工学院,上海201620 [3]青岛即发集团股份有限公司,山东青岛266000 [4]东华大学纺织科技创新中心,上海201620 [5]东华大学国家染整工程技术研究中心,上海201620

出　　处：《纺织学报》2024年第1期120-127,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(22208049);山东省自然科学基金重大基础研究项目(ZR2020ZD22);山东省重大科技创新工程项目(2019JZZY010406)。

摘　　要：为提高部分分散染料在超临界二氧化碳流体(ScCO 2)中上染率,补全ScCO 2分散染料染色色谱,以5-(二甲氨基)-2-甲基-5-氧戊酸甲酯作为分散染料ScCO 2染色助溶剂,通过实验探究了染料与助溶剂质量比、染色温度、染色压力对分散染料上染率的影响,并对染色后涤纶纱线的力学性能、耐摩擦色牢度、耐日晒色牢度以及耐皂洗色牢度进行表征。结果表明:纱线得色深度明显提高,且未对纱线色相、饱和度产生明显影响;分散黄163、分散蓝60染料滤饼上染率分别为21.61%、34.25%;加入助溶剂后,分散黄163、分散蓝60的ScCO 2染色上染率分别可达57.62%、70.97%;染色纱线得色深度显著提高,染色后纱线的K/S值分别由4.5、5.9提升至12.0、12.2;最佳染色工艺为:染料与助溶剂质量比1∶20,染色温度130℃,染色压力27 MPa;加入助溶剂后染色纱线的力学性能、色牢度符合生产需求。Objective Supercritical carbon dioxide fluid(ScCO 2)dyeing of disperse dyes with low energy consumption and no effluent discharge in the dyeing process is an advanced industrial technology in line with sustainable development.However,some problems associated with the disperse dyes in this process,such as low dye uptake and incomplete dye chromatography caused by low solubility,greatly limit their further development.In view of these problems,this paper proposed to add appropriate cosolvent to the ScCO 2 to improve itssolubility,so as to reduce the impact of these problems on the dyeing process.Method Based on the interaction forces between disperse dye molecules and cosolvent molecules,a green cosolvent(methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate)with high solubility for disperse dyes,high boiling point and non-volatile and non-toxic was selected as a dyeing auxiliary.Disperse yellow 163 and Disperse Blue 60 were selected as experimental dyes.The dyeing rates and K/S values of disperse dye filter cakes and disperse dye filter cakes with cosolvent blends were tested under different process conditions to evaluate their dyeing effects.The mechanical properties and color fastness of the dyed yarns were characterized to assess the effect of the cosolvent addition on the yarn properties.Results The influence of cosolvent on the fabric was studied through the reflectance curve of the dyed fabric.The resultsshowed that the selected cosolvent has a significant influence on the brightness of the fabric,but it will not change the color and saturation of the fabric.With the addition of cosolvent,the K/S value of fabric dyed by Disperse Yellow 163 increased from 4.5 to 12.0,and that of fabric dyed by Disperse Blue 60 increased from 5.9 to 12.2,indicating that this cosolvent could be used in supercritical carbon dioxide fluid dyeing with disperse dyes.By changing the mass ratio of disperse dyes to liquid cosolvent,dyeing temperature and pressure,the influence of process conditions on the dye uptake of disperse dyes was i

关 键 词：分散染料 超临界二氧化碳流体 助溶剂 上染率 涤纶纱线 

分 类 号：TS193.1[轻工技术与工程—纺织化学与染整工程]