文献类型：期刊文献

英文题名：Improved Dyeing Performance of Blue Disperse Dyes with N-Acetoxyethyl Groups in D5 Non-aqueous Media System

作者：Ding, Lei[1,2];Zhang, Hongjuan[1];Chen, Linguo[1];Wang, Zhengkai[1];Pei, Liujun[1];Yang, Qun[1];Wang, Jiping[1]

机构：[1]Shanghai Univ Engn Sci, Shanghai Engn Res Ctr Clean Prod Text Chem, Shanghai 201620, Peoples R China;[2]Shaoxing Univ, Key Lab Cleaning Dyeing & Finishing Technol Zhejia, Shaoxing 312000, Zhejiang, Peoples R China

年份：2024

卷号：25

期号：3

起止页码：1005

外文期刊名：FIBERS AND POLYMERS

收录：SCI-EXPANDED(收录号：WOS:001171905700002)、、EI(收录号：20240915630331)、Scopus(收录号：2-s2.0-85187284643)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (22108169), Shanghai Sailing Program (21YF1416000), Opening Project of Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province (QJRZ2205), and National Natural Science Foundation of China (22072089).

语种：英文

外文关键词：D5 non-aqueous medium; Disperse dyes; Molecular structures; Dyeing properties; Polyester fabrics

外文摘要：Traditional commercial anthraquinone dyes and azo blue disperse dyes generally have high solubility in decamethylcyclopentasiloxane (D5) non-aqueous media dyeing system, which leads to low dyeing uptake. One way to improve dyeing uptake is by adjusting the molecular structure of the dyes to change their solubility. Herein, the dyeing properties of two disperse dyes with N-acetoxyethyl group were compared with commercial dye C.I. Disperse Blue 257 (B257) in D5 non-aqueous medium. Their visible absorption performances were evaluated in DMF and further analyzed using the density functional theory (DFT) method. The dyeing performance was investigated by comparing the solubility, dyeing uptake, K/S value, building-up property, leveling performance, and color-fastness. The results showed that the dyes with bis-N-acetoxyethyl groups exhibited lower solubility than that of B257 with bis-N-methoxyethyl groups in the non-aqueous media system, resulting in increased dye adsorption on polyester fibers and high dyeing uptake. Moreover, the fabrics showed high color strength, good levelness, and better washing and rubbing fastness properties due to the introduction of bis-N-acetoxyethyl groups. DFT results revealed the differences in spectral performance and solubility of dyes from the molecular level, which corresponded well with the experimental data. Overall, this research provides valuable insights to design and optimize the disperse dyes for polyester dyeing in the D5 non-aqueous medium.