Design of the reactive dyes containing large planar multi-conjugated systems and their application in non-aqueous dyeing  

作　　者：Aiqin Gao Xiang Luo Huanghuang Chen Aiqin Hou Hongjuan Zhang Kongliang Xie 

机构地区：[1]College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620,China [2]National Engineering Research Center for Dyeing and Finishing of Textiles,Donghua University,Shanghai 201620,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第2期264-271,共8页中国化学工程学报（英文版）

基　　金：supported by Natural Science Foundation of Shanghai (20ZR1400300);Textile Vision Applied Basic Research Project (J202005);National Key Research & Development Program of China (2017YFB0309600)。

摘　　要：The development of pollution-free dyeing technology, including anhydrous dyeing and non-aqueous dyeing technologies, has always been an important way and research hot in energy conservation and emission reduction. Designing new structural dye molecules is the key to water-saving dyeing processes.Herein, three reactive dyes were designed and synthesized, which contained large planar multiconjugated systems and multi-reactive groups. The designed reactive dyes are expected to have high affinity and high fixations in non-aqueous or small bath dyeing processes. The reactive dyes were applied in the decamethylcyclopentasiloxane(DMCS) reverse micelle dyeing for cotton fabric. High exhaustion rate of 99.35%, 98.10% and 98.80%, and fixation rate of 95.15%, 96.34% and 94.40% for three dyes, R1,R2 and R3, could be respectively obtained. The dyes can be fully utilized and had excellent dyeing performance, fastness and levelling properties under the revere micelle dyeing. The cotton fabric is like an oil-water separator in the dyeing process, where the dye micelles rapidly absorb and permeate into the cotton fibers. DMCS circulates around the fabric to transfer mass and energy. After dyeing, the solvent can be separated quickly and reused. The new reactive dyes containing large planar and multi-conjugated systems have potential application in green and sustainable dyeing technology with less wastewater and higher utilization.

关 键 词：Reactive dyes Non-aqueous dyeing High fixation rate Waste water Synthesis RECOVERY 

分 类 号：TS193.5[轻工技术与工程—纺织化学与染整工程] TQ610.1[轻工技术与工程—纺织科学与工程]