文献类型：期刊文献

英文题名：Investigation from molecular packing to application of azobenzene disperse dyes on polyester fabrics to realize waterless dyeing

作者：Zhang, Hongjuan[1,2,3];Pei, Liujun[1,3];Yu, Shunjie[1,3];Liang, Shuaitong[1,3];Yang, Qun[1,3];Dong, Aixue[2];Wang, Jiping[1,3]

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 Zheji, Shaoxing 312000, Zhejiang, Peoples R China;[3]Shanghai Univ Engn Sci, Sch Text & Fash, Shanghai 201620, Peoples R China

年份：2022

卷号：349

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：SCI-EXPANDED(收录号：WOS:000754574900008)、、EI(收录号：20214811238745)、Scopus(收录号：2-s2.0-85119925838)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (22108169); Shanghai Sailing Program (21YF1416000), China; Opening Project of Key Laboratory of Clean Dyeing and Finishing Technology of Zhejiang Province (QJRZ1901), China; National Natural Science Foundation of China (22072089); and Key Research and Development Program of Xinjiang Production and Construction Corps (2019AA001), China.

语种：英文

外文关键词：Molecular packing; Substituents; Dyeing properties; Polyester fabric; Low pressure waterless dyeing

外文摘要：In this paper, three azobenzene disperse dyes with different substituents were selected to investigate the structure-performance relationship derived from molecular structure. Their visible absorption performances were evaluated in DMF and further analyzed using density functional theory (DFT) method. The dyeing properties of these disperse dyes on polyester fabrics in low pressure waterless dyeing system were discussed by comparing solubility, K/S value, levelling and color fastness. Additionally, the X-ray crystal diffraction analysis was used to investigate the relationship between dyeing properties, the nature of chemical structure and substituents therein. Carefully analysis showed that the dyeing uptake increased by 31.1% due to an introduction of cyano group in the diazo component. Meanwhile, the substituent acetoxethyl in coupling component further increased the dyeing uptake to 97.4%, which was attributed to low solubility. Crystal structures confirmed compact molecular arrangement results in low solubility and actually beneficial for the high dyeing uptake due to strong intermolecular interactions. Incorporating an understanding of the molecular packing analysis into the development of disperse dyes can improve the performance and promote the sustainable development of textile industry. (C) 2021 Elsevier B.V. All rights reserved.