Study on the Hydrolysis Kinetics of Heterobifunctional Reactive Dyes with HPLC Analysis

摘要：

The hydrolysis kinetics of heterobifunctional monochlorotriazine/ sulphatoethylsulphone dye,C.I.Reactive Red 241,was studied using reversed-phase ion-pair high performance liquid chromatography (HPLC) under the conditions of various time,temperature and pH value.The hydrolysis was a pseudo first-order reaction as long as OH- was kept constant.There were three different hydrolysates in the hydrolysis process,and after complete reaction only one hydrolysates existed.The velocity of hydrolysis increased with increasing the temperature or the pH value,and each 10 increase caused a 2.2 ℃ -fold increase in the hydrolysis rate constant of C.I.Reactive Red 241 dye and the hydrolysis rate constant at pH 10 was 4-5 fold of those at pH 9,pH 8,90.In terms of the hydrolysis characteristics,the℃ suitable fixation conditions for C.I.Reactive Red 241 were as follows: pH 8～9,<80℃， <40min.

关键词： Heterobifnuctional reactive dyes Hydrolysis kinetics HPLC

作者: Ping Li Jianzhong Shao Min Shao

作者单位: Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ZhejiangSci-Tech Universi Key Laboratory of Advanced Textile Materials and Manufacturing Technology (Zhejiang Sci-Tech Univers

会议类型: 国际会议

会议名称: 2008年先进纺织材料暨加工技术国际学术会议

会议地点: 杭州

会议语种:英文

在线出版日期: 2008-10-15（万方平台首次上网日期，不代表论文的发表时间）