非水介质-微水体系中活性染料的水解和键合性能  

Hydrolysis and bonding properties of reactive dyes in non-aqueous medium with minimal water systems

作　　者：邵敏[1] 王丽君 李美琪 刘今强[1] 邵建中[1] SHAO Min;WANG Lijun;LI Meiqi;LIU Jinqiang;SHAO Jianzhong(Engineering Research Center for Eco-Dyeing and Finishing of Textiles,Ministry of Education,Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China)

机构地区：[1]浙江理工大学生态染整技术教育部工程研究中心,浙江杭州310018

出　　处：《纺织学报》2022年第11期94-103,共10页Journal of Textile Research

基　　金：国家重点研发计划项目(2017YFB0309600)。

摘　　要：为探明非水介质-微水体系中活性染料与棉纤维的键合性能及伴随的染料水解行为,应用高效液相色谱法(HPLC)结合实际染色法,研究非水介质-微水溶液体系中、模拟反应体系中及实际染色中活性染料的水解特性、与醇羟基的键合特性及对棉纤维的上染特性。结果表明:染料在非水介质-微水溶液体系中的水解主要取决于染料与水的相对浓度、pH值和温度;在非水介质-微水的甲醇模拟反应体系中,活性染料的醇解率显著高于常规水浴体系,提高pH值使醇解率与水解率之比有所提高,而提高温度则使该比例明显下降;在非水介质-微水的染色体系中,较宽的pH值和温度范围内活性染料染棉均具有超高的上染率;非水介质-微水体系染色拟采用较高pH值和较低温度工艺,以利节水低碳生产。To ascertain the bonding properties of reactive dyes with alcohol hydroxyls on cotton fibers and the accompanying hydrolysis behavior of reactive dyes in non-aqueous medium with minimal water systems,the high performance liquid chromatography(HPLC)and the actual dyeing method were jointly used to study the hydrolysis characteristics of reactive dyes in the solution systems of non-aqueous medium with minimal water,the bonding properties of reactive dyes with alcohol hydroxyl groups in the simulated reaction system using methanol as the simulant of alcohol hydroxyl groups on cellulose fibers,and the dyeing performance of reactive dyes onto cotton fibers in actual non-aqueous medium dyeing system.The results show that,the hydrolysis properties of reactive dyes in the solution system of non-aqueous medium with minimal water mainly depend on the relative concentration of dyes to water,the pH value,and the temperature;the alcoholysis rate of reactive dyes in non-aqueous medium with minimal water system is significantly higher than that in the conventional water bath,and the increase in pH value increases the ratio of alcoholysis percentage to hydrolysis percentage,while the increase in temperature reduces the ratio significantly;the dyeing in non-aqueous medium with minimal water system can achieve ultra-high exhaustion rate of reactive dyes onto cotton in a wide range of pH value and temperature;and the dyeing process for cotton reactive dyeing in non-aqueous medium with minimal water system should adapt the strategy with a comparatively higher pH value and lower temperature,which is beneficial to the dyeing and fixing performance of reactive dyes,and thus beneficial to water-saving and carbon reduction production.

关 键 词：非水介质 活性染料 棉 水解 醇解 键合反应 高效液相色谱 

分 类 号：TS193.1[轻工技术与工程—纺织化学与染整工程]