Photochemical stability of cellulose textile surfaces painted with some reactive azo-triazine dyes

Roşu, Liliana; Roşu, Dan; Gavat, Cristian-Catalin; Varganici, Cristian–Dragos

doi:10.1007/s10853-014-8144-0

Cited by 5 publications

(6 citation statements)

References 32 publications

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“…Composed of a dye part, a bridging part, and reactive sites, reactive dyes can be covalently bonded to fabrics (Figure 1A). 61,62 Among the reactive groups including triazine, vinylsulfone, quinoxaline, pyrimidine, and acrylamide, triazine and vinylsulfone reactive dyes are the most popular. 61,63−67 Because of the high reactivity of triazine, it has been utilized to modify the surface of cellulosic fibers to improve its reactivity, 68 diffusion properties, 69 antibacterial properties, 70 and printability.…”

Section: ■ Introductionmentioning

confidence: 99%

A Process for Well-Defined Polymer Synthesis through Textile Dyeing Inspired Catalyst Immobilization

Chu

Corrigan

et al. 2018

ACS Sustainable Chem. Eng.

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Industrialized textile dyeing technology has inspired a scalable and low-cost process for immobilization of a photoredox catalyst onto commercial cotton threads to prepare unique heterogeneous catalyst composites; these composites are capable of regulating photoinduced controlled/"living" radical polymerization in batch and flow reactors. Freebase porphyrin (e.g., tetraphenylporphyrin (TPP)), an efficient photocatalyst for photoinduced electron/energy transfer−reversible addition−fragmentation chain transfer polymerization of acrylamides, was attached to the cotton thread through a method analogous to reactive dye chemistry, to produce composites with excellent photocatalytic activity. Separation and recovery of the catalyst-functionalized composite was realized through simple washing with solvents, which resulted in negligible catalyst leaching and maintenance of catalytic performance over multiple polymerization cycles. Polymerization was also successfully performed in solvents where TPP has poor solubility, demonstrating the versatility of this approach. By taking advantage of the robustness and flexibility of cotton thread, the immobilized catalyst was fitted in a continuous flow reactor to prepare well-defined polymers through a flow process.

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Section: ■ Introductionmentioning

confidence: 99%

A Process for Well-Defined Polymer Synthesis through Textile Dyeing Inspired Catalyst Immobilization

Chu

Corrigan

et al. 2018

ACS Sustainable Chem. Eng.

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“…Hypochromic modification of the UV spectrum after irradiation may be a consequence of partial destruction of the dye structure action, while bathochrome modification supports the extension of the conjugate double bonds system. Literature reports correlate the darkening of dyes with complex photooxidation phenomena, leading to the formation of cromophores [19,24]. The decrease in L* values may be correlated with amine entities number and substitution degree also explaining the slight bathochrome deplacement effect and green and yellow cromophore accumulation.…”

Section: Concentrationmentioning

confidence: 99%

“…From Table 2, it can be seen the darkening of the dyed fabric samples as the concentration of dye solution increases [19]. For additional data, the variation of the other color parameters was monitored depending on the exposure time.…”

Section: Color Modification Studiesmentioning

confidence: 99%

“…The decrease in L* values may be correlated with amine entities number and substitution degree also explaining the slight bathochrome deplacement effect and green and yellow cromophore accumulation. The hypochrome effect is generated by aromatic ring disruption [19,25].…”

Section: Concentrationmentioning

confidence: 99%

“…Although a series of papers report studies on the photostability of reactive dyes in solution [16][17][18], the photochemical behavior of cotton dyed with Reactive Blue_204 remains a challenge. In a previous paper, the influence of UV radiation with λ > 300 nm on the photochemical stability between the cellulosic support and four reactive dyes with azo-triazine structure was studied [19].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photochemical Stability of a Cotton Fabric Surface Dyed with a Reactive Triphenodioxazine Dye

Roşu¹,

Gavat

Roşu³

et al. 2021

Polymers

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The paper describes the photochemical stability of a commercial triphenodioxazine dye (Reactive Blue_204) linked onto a cotton fabric. Preliminary studies have shown that as a result of irradiation, the dye and its photodegradation products can pass directly onto the skin under conditions that mimic human perspiration and cause side-effects. The cotton dyed fabric was photo irradiated at different time intervals. Standard methods were employed to evaluate the color strength at various levels of pH, temperature, dyeing contact time, and salt concentration. The influence of UV radiation at different doses (λ > 300 nm) on the structural and color modifications of the dyed cotton fabrics was studied. Structural modifications before and after irradiation were compared by applying FTIR, UV–Vis, and near infrared chemical imaging (NIR–CI) techniques. Color modifications were investigated with the CIELAB system. Color differences significantly increased with the irradiation dose. High irradiation doses caused changes in the dye structure.

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Multicomponent Polymer Materials: Photodegradation Mechanism

Roşu¹,

Varganici²,

Roşu³

2016

Advanced Structured Materials

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Photochemical stability of cellulose textile surfaces painted with some reactive azo-triazine dyes

Cited by 5 publications

References 32 publications

A Process for Well-Defined Polymer Synthesis through Textile Dyeing Inspired Catalyst Immobilization

A Process for Well-Defined Polymer Synthesis through Textile Dyeing Inspired Catalyst Immobilization

Photochemical Stability of a Cotton Fabric Surface Dyed with a Reactive Triphenodioxazine Dye

Multicomponent Polymer Materials: Photodegradation Mechanism

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