Facile Bifunctional Dyeing of Polyester under Supercritical Carbon Dioxide Medium with New Antibacterial Hydrazono Propanenitrile Dyes

Abstract

In this work, new hydrazonopropanenitrile dyes with potential antibacterial activity were applied for dyeing polyester fabrics with supercritical carbon dioxide as a dyeing medium. The experimental conditions were optimized to obtain both visibly and spectrophotometrically uniform dye uptakes in the fabric. Raman microspectroscopy firmly indicated the dye uptake through all layers of the fabric. The color strength of the fabric was evaluated by K/S measurements and proved to be higher than those of conventional dyeing. The fastness properties of the dyed fabric were evaluated and found to give excellent results. The antibacterial test was performed according to the AA-TCC method, and the results were recorded.

Molecular surface area based predictive models for the adsorption and diffusion of disperse dyes in polylactic acid matrix

“…Low dye uptake means the majority of dyes have been released to environment. It increases the cost of effluent control since most of the dyes are resistant to the treatments [21][22][23]. Given the attractive properties of PLA as sustainable textile fibers, the low dye uptake seriously limits its application in textile industry.…”

Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

“…Figure 1 shows the chemical structure of dyes employed in our research and was prepared according to the literature [31]. Figure 2 is a diagram of the whole apparatus.…”

“…As a consequence in the last few decades, various researchers focused their efforts on the synthesis of new dyes for these fibers [7][8][9][10][11][12]. The success of dyeing synthetic textiles, particularly polyester [13][14][15][16][17][18][19][20][21][22][23], with disperse dyes in scCO2 prompted research application of this technique to other synthetic fibers such as polypropylene [24], and aramid fibers [25] or alternative natural fabrics like cotton [26][27][28].…”

“…In an earlier study [10], we explored the dyeing of polyester fabrics with antibacterial disperse-azo dyestuffs which were synthesized in our program, employing a supercritical carbon dioxide dyeing technique. Working with antibacterial dyes in textiles integrated the dyeing and finishing process and resulted in a more effective technique in terms of water and energy management.…”

Synthesis of Some New Thiazolo[3,2‐a]pyrimidine Derivatives and Their Applications as Disperse Dyes

“…β‐Ketoanilides are versatile reagents that have been extensively utilized in heterocyclic synthesis . In this work, the prepared heterocycles are proved to be interesting for their potentiality as biodegradable agrochemicals , pharmaceuticals , as non‐peptide HIV , protease inhibitors, anti‐schistosomal agents , and intermediates for the manufacture of dyestuffs.…”