SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 54 ›› Issue (2): 264-271.DOI: 10.1016/j.cjche.2022.03.013

• Full Length Article • 上一篇    下一篇

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

Aiqin Gao1, Xiang Luo1, Huanghuang Chen1,2, Aiqin Hou1,2, Hongjuan Zhang1,2, Kongliang Xie1   

  1. 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
  • 收稿日期:2021-11-30 修回日期:2022-03-02 出版日期:2023-02-28 发布日期:2023-05-11
  • 通讯作者: Kongliang Xie,E-mail:klxie@dhu.edu.cn
  • 基金资助:
    This work was supported by Natural Science Foundation of Shanghai (20ZR1400300), Textile Vision Applied Basic Research Project (J202005) and National Key Research & Development Program of China (2017YFB0309600).

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

Aiqin Gao1, Xiang Luo1, Huanghuang Chen1,2, Aiqin Hou1,2, Hongjuan Zhang1,2, Kongliang Xie1   

  1. 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
  • Received:2021-11-30 Revised:2022-03-02 Online:2023-02-28 Published:2023-05-11
  • Contact: Kongliang Xie,E-mail:klxie@dhu.edu.cn
  • Supported by:
    This work was supported by Natural Science Foundation of Shanghai (20ZR1400300), Textile Vision Applied Basic Research Project (J202005) and 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 multi-conjugated 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

Abstract: 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 multi-conjugated 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.

Key words: Reactive dyes, Non-aqueous dyeing, High fixation rate, Waste water, Synthesis, Recovery