超临界二氧化碳流体中SCFX-AYRL染料的溶解性研究  

Investigation on solubility of SCFX-AYRL dye in supercritical carbon dioxide

作　　者：赵向阳 闫凯 龙家杰[1,2,3] ZHAO Xiangyang;YAN Kai;LONG Jiajie(College of Textile and Clothing Engineering,Soochow University,Suzhou,Jiangsu 215021,China;Jiangsu Engineering Research Center of Textile Dyeing and Printing for Energy Conservation,Discharge Reduction and Cleaner Production(ERC),Soochow University,Suzhou,Jiangsu 215123,China;Scientific Research Base for Waterless Coloration with Supercritical Fluid(China Textile Engineering Society),Soochow University,Suzhou,Jiangsu 215123,China)

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215021 [2]苏州大学江苏省纺织印染节能减排与清洁生产工程研究中心,江苏苏州215123 [3]苏州大学超临界流体无水绳状匹染技术科研基地(中国纺织工程学会),江苏苏州215123

出　　处：《纺织学报》2024年第6期98-104,共7页Journal of Textile Research

基　　金：江苏省纺织印染节能减排与清洁生产工程研究中心课题(2023-ERC-9011580823)。

摘　　要：染料在超临界二氧化碳流体(SCF-CO_(2))中的良好溶解性是超临界无水染色技术应用的前提和基础。采用研制的超临界流体溶解度测试装置,研究了活性分散红SCFX-AYRL专用染料在SCF-CO_(2)中的溶解性,并分别从流体处理时间、温度、系统压力和助溶剂应用方面对该专用染料溶解性的影响进行了探讨。研究表明当系统压力为20 MPa、温度为80~130℃时,SCF-CO_(2)中该染料在30~60 min可达到溶解平衡,在一定范围内升高流体温度和系统压力可提高专用染料的溶解性;加入助溶剂可显著改善染料的溶解行为,提高其溶解度及溶解速率,降低温度、压力等系统因素的影响;Chrastil经验模型可实现对SCF-CO_(2)和SCF-CO_(2)/助溶剂体系中该专用染料溶解行为的良好关联和预报。Objective In order to promote the commercial application of supercritical fluid of carbon dioxide(SCF-CO_(2))coloration technology,the study of the solubility of various dyes in SCF-CO_(2) plays an important role in the effective selection of dyes,the design of processes,and the improvement of process efficiency,particularly for a good color matching and hue control.Therefore,the purpose of this work is to investigate the solubility and its dissolving behaviors of a new Reactive Disperse Red SCFX-AYRL dye in SCF-CO_(2),which could provide a basis for the applications of the special dye and the SCF-CO_(2) technology in practice.Method In order to investigate the solubility and the dissolving behavior of the special dye in SCF-CO_(2),a self-developed solubility testing device involving a sampling unit was used.Moreover,a calibration curve between the dye concentrations and its corresponding absorbance was constructed by a standard addition method in acetone solution.Thus,different solubilities and its dissolving behavior of the dye at different conditions were determined via a sampling method from the testing device system after a dissolving equilibrium.Then the results were fitted by an empirical Chrastil equation,and the dissolution behavior was also predicted by this model.Result The effects of treatment duration,temperature,pressure,and cosolvent system on the solubility of the dye in SCF-CO_(2) were investigated.A series of visible absorption spectra and a calibration curve for the special dye in acetone solution were developed for the determination of the dye solubility in subsequent experiments.At a system pressure of 20 MPa and various temperature conditions,the solubility of the dye in SCF-CO_(2) first increased and then approached equilibrium as the dissolution duration extended from 10 min to 60 min.A significantly shortened dissolution equilibrium time was also observed as the temperature increased from 80℃to 130℃.When the system pressure was raised from 6 MPa to 24 MPa under a same dissolution temp

关 键 词：超临界二氧化碳流体 活性分散染料 溶解性 助溶剂 溶解度关联 

分 类 号：TS193[轻工技术与工程—纺织化学与染整工程]