Study on differences of reaction behavior of phenolic hydroxyl groups with vinyl sulfone reactive dyes and monochlorotriazine reactive dyes

Shao, Min; Shao, Jianzhong; Liu, Jinqiang; Xu, Xian-Ke

doi:10.1007/s12221-014-1865-5

Cited by 9 publications

(3 citation statements)

References 17 publications

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“…The hydroxyl deprotonation on the fiber was also increased when the pH of the dyeing condition changed, 48 which means that the number of reactive groups on the fiber increased. Meanwhile, since the monochloropolytriazine group is less reactive than the vinylsulfone group, 49 the fiber reaction was mainly with vinylsulfone groups under alkaline conditions, which shifted the main reaction pathways to paths (b) and (c). In all of above, the addition of less NaHCO 3 could improve the dye fixation rate and fabric K / S value by increasing the number of dyeing sites and activating the dye reactive groups.…”

Section: Resultsmentioning

confidence: 99%

Sustainable silk dyeing in a silicon non-aqueous dyeing system with Reactive Red 195: salt-free and less alkali

Luo

Zhu

Pei

et al. 2022

Textile Research Journal

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Conventional dyeing processes usually generate a huge amount of wastewater, and in general, silk dyeing with reactive dyes using large amounts of salt and alkali has a great environmental impact. Herein, a green approach for a new dyeing system involving silk fabric dyed with reactive dyes in a silicon non-aqueous dyeing system without salt was reported. The optimal dyeing parameters of silk fabric dyed in this green dyeing system without alkali were 90°C for 75 minutes and with alkali were 70°C for 75 minutes, and the Reactive Red 195 exhibited good dye permeability, superior exhaustion, high fixation rate, and good dyeing depth, indicating the high utilization of dye and less effluent discharge. The color fastness of silk fabric dyed in the silicon non-aqueous dyeing system was comparable to silk fabric dyed in the conventional water bath. In addition, the fixation rate and K/ S value were improved by the addition of 0.4% (o.w.f) NaHCO3, which cannot be obtained in a conventional water bath, and all silk fabrics showed better tensile strength dyed in the green dyeing system. Therefore, the sustainable green dyeing method with a silicon non-aqueous system achieved a salt-free, less alkali or alkali-free, and simple process, which has the potential to solve the problems of wastewater, high salt, and high alkali in conventional dyeing processes.

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Section: Resultsmentioning

confidence: 99%

Sustainable silk dyeing in a silicon non-aqueous dyeing system with Reactive Red 195: salt-free and less alkali

Luo

Zhu

Pei

et al. 2022

Textile Research Journal

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“…In recent years, one of the most commonly studied flame retardants is triazine-based organic compounds containing phosphorus and nitrogen used in cotton materials (Dong et al 2017;He et al 2018). Their active groups are similar to those of dichlorotriazine or monochlorotriazine reactive dyes (Kausar et al 2007;Shao et al 2014). The cotton materials are finished by impregnating triazine-based flame retardants to form strong C-O-C chemical bond with -OH of cellulose.…”

Section: Introductionmentioning

confidence: 99%

A novel P/N-based flame retardant synthesized by one-step method toward cotton materials and its flame-retardant mechanism

Sun

Xie

et al. 2021

Cellulose

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A novel flame retardant containing phosphorus and nitrogen elements, ammonium salt of N,Ndimethylene p-benzenesulfonic phosphonic acid (ADBSPA), was prepared by one-step continuous chemical method. The chemical structure of the ADBSPA was determined by nuclear magnetic resonance spectrum (NMR) and Fourier transform infrared (FTIR), and ADBSPA was processed onto cotton materials by immersion method. The flame retardancy of coated cotton materials was analyzed by limiting oxygen index (LOI) and Vertical burning test. The LOI value of cotton coated with 350 g/L ADBSPA increased from the original 18.2 ± 0.2% to 31.7 ± 0.2%, and the damaged length of this sample reduced to 6.6 ± 0.1 cm, which proved that ADBSPA enhanced the anti-burning ability of cotton materials. Cone calorimetry was used to evaluate the combustion behavior of cotton materials before and after coating. Compared with original sample, ADBSPA changed the combustion path of cotton materials, and the intuitive performance was that the ADBSPA-cotton-4 reserved 25.1 ± 0.5% of char residue at 250 s, and its peak heat release rate (PHRR) greatly reduced to 17 ± 1 kW/m 2 . The surface morphology of uncoated and coated cotton materials was characterized by scanning electron microscopy (SEM). It was observed that the coated sample still maintained a complete fiber skeleton after burning. In addition, thermogravimetric (TG) analysis confirmed that the coated cotton materials had good thermo-oxidative and thermal stability. All results pointed out that the phosphorus and nitrogen elements contained in ADBSPA as well as cotton cellulose constituted the three basic conditions of intumescent flame-retardant system. The polyphosphoric acid compounds formed by phosphorus element at high temperature promoted the dehydration of cotton fibers into char layer. The non-flammable gases produced by the nitrogen element in the combustion process covered the surface of fabrics, thereby playing the role of shielding heat and diluting combustible gases.

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“…For example, Drimaren Red CL-5B (CI Reactive Red 241, DR) is a reactive dye extensively used in the textile and leather industry (Javeda et al, 2019;Nisar et al, 2017;Sajjad et al, 2021;Santra et al, 2020;Soria-Sánchez et al, 2012) and exhibits in its structure (Fig. 1), the monochlorotriazine and the sulfatoethylsulfonyl reactive groups (Shao et al, 2014). In addition, the azo and anthraquinone groups act as chromophoric agents (Zhang et al, 2019), while the negative charged group SO 3provides high solubility.…”

Section: Introductionmentioning

confidence: 99%

Probing the toxic interactions between the reactive dye Drimaren Red and Human Serum Albumin

Menezes

Assis

Neto

et al. 2021

Preprint

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Azo dyes like Drimaren Red CL-5B (DR, CI Reactive Red 241) represent a class of compounds extensively used in the textile industry and are extremely dangerous to the environment and human health. Therefore, understanding the binding characteristics between such substances and biological macromolecules is essential from a toxic-kinetic perspective. The molecular interaction between DR and Human Serum Albumin (HSA) was investigated through spectroscopic techniques and molecular docking approaches. The results indicate that DR quenches HSA fluorescence following a static mechanism (corroborated by UV-Vis studies) with a moderate interaction (Ka~105 M-1), guided by electrostatic interactions (DS> 0 and DH< 0). DR is 5.52 nm distant from fluorophore residue Trp-214 (according to FRET investigations), and the interaction is mainly related to Tyr residues (as revealed by synchronous fluorescence). The Ellman assay identified a decrease in the content of HSA free thiol. The results of the RLS demonstrate that there are HSA alterations, suggesting damage to the confirmation of the protein. Molecular docking suggests the binding site of DR was located in subdomain IIB HSA, corroborating the experimental properties. Finally, the results suggest a high potential for DR toxicity triggered by contact with key proteins, which affects the biomolecule functionalities.

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Study on differences of reaction behavior of phenolic hydroxyl groups with vinyl sulfone reactive dyes and monochlorotriazine reactive dyes

Cited by 9 publications

References 17 publications

Sustainable silk dyeing in a silicon non-aqueous dyeing system with Reactive Red 195: salt-free and less alkali

Sustainable silk dyeing in a silicon non-aqueous dyeing system with Reactive Red 195: salt-free and less alkali

A novel P/N-based flame retardant synthesized by one-step method toward cotton materials and its flame-retardant mechanism

Probing the toxic interactions between the reactive dye Drimaren Red and Human Serum Albumin

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