An ecofriendly dyeing of nylon and cotton fabrics in supercritical CO2 with novel tricyanopyrrolidone reactive disperse dye

• Published in: Journal of CO2 utilization Vol. 60; p. 102004
• Main Authors: Penthala, Raju, Park, Si Hyeong, Oh, Hyeon, Lee, In Yeol, Ko, Eun Hee, Son, Young-A.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-06-2022
• Subjects: Eco-friendly dyeing; Nylon and cotton fabrics; Supercritical CO2; Tricyanopyrrolidone reactive disperse dye; Nylon and cotton fabrics; Supercritical CO2; Tricyanopyrrolidone reactive disperse dye; Eco-friendly dyeing
• ISSN: 2212-9820; 2212-9839
• DOI: 10.1016/j.jcou.2022.102004

A reactive disperse dye with tricyanopyrrolidone coupled with triazine reactive group (CNU-CY) was designed and successfully synthesized from commercially inexpensive starting materials. CNU-CY was characterized and confirmed by FT-IR, nuclear magnetic resonance spectra (1H and 13C) and high-resolution mass spectra. Further, color characteristics were determined by ultraviolet-visible absorption spectroscopy. On the other hand, dyeing experiments were conducted on nylon and cotton fabrics by using an eco-friendly supercritical CO2 fluid medium. The dyeing experiment results revealed excellent color strength, and dye fixation on both nylon and cotton fabrics. This is mostly due to the formation of a strong chemical bond between the fabric and reactive disperse dye. Hence, these results are suggesting to develop a wide variety of reactive disperse dyes (for nylon and cotton fabrics) having various kinds of functional groups on tricyanopyrrolidone moiety via simple synthetic methods and hopefully useful for eco-friendly supercritical CO2 dyeing for the synthetic and natural fabrics in the textile industry.
•Tricyanopyrrolidone coupled with triazine group, reactive disperse dye (CNU-CY) was designed synthesized and characterized.•Synthesis was carried out from simple and inexpensive starting materials and also synthetic methods are energy efficient.•CNU-CY was applied for the coloration of nylon and cotton fabrics by using eco-friendly supercritical CO2 conditions.•The overall synthetic methods and dyeing results are suggesting that tricyanopyrrolidone based reactive disperse dyes are potential for the textile industry.