Study of analytical methods for quantifying unfixed form of bifunctional reactive dyes used in dyeing cellulosic fibers (cotton)

Chemchame, Younes; Popikov, I. V.; Soufiaoui, Mohammed

doi:10.1007/s12221-010-0565-1

Cited by 6 publications

(13 citation statements)

References 11 publications

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“…Two major peaks at t R = 2.73 and t R = 4.62 min could be differentiated, corresponding to the inactive and the partially hydrolysed forms, respectively. Comparison of this chromatogram with those of the dye and the residual soaping bath ( Figure 6) [12] reveals the presence of similar peaks, attributable to the inactive forms (t R = 1.82 and t R = 2.73 min). The peak at t R = 4.62 min has no corresponding peak in the latter chromatograms, hence it is attributed to the partially hydrolysed form.…”

Section: Resultsmentioning

confidence: 84%

“…The major peaks appearing at t R = 5.15 and 5.29 min in the chromatogram of the residual dyebath ( Figure 10, line A) do not have corresponding peaks in the chromatograms of the dye and the residual soaping bath. The peak at t R = 5.23 min (Figure 2), which was attributed to the completely hydrolysed form of the dye [12], and that at t R = 5.29 min are considered identical. Consequently, the cited major peaks can be assigned to the partially and completely hydrolysed forms, respectively.…”

Section: Analysis Of CI Reactive Yellow 145mentioning

confidence: 99%

“…According to the data in Figure 10 (line B) it can be deduced that the inactive form is at t R = 2.74 min, the partially hydrolysed forms are at t R = 5.39 and 6.04 min and the completely hydrolysed form is at t R = 5.26 min. The assignment of the peak at t R = 6.04 min was based on the chromatogram of the residual soaping bath (Figure 2) [12].…”

Section: Analysis Of CI Reactive Yellow 145mentioning

confidence: 99%

“…The aim of the present study was to examine the reliability and compatibility of three methods [12]: the first is based on spectrophotometric analysis and involves measuring the absorbance of the residual dyebath; the second is based on colorimetric analysis and involves measuring the reflectance of the dyed fabric; and the third is based on HPLC, the purpose of which is to identify and quantify the non-adsorbed dye forms (inactive, mono-and dihydrolysed forms) in the residual dyebath.…”

Section: Introductionmentioning

confidence: 99%

“…The results of the spectrophotometric and colorimetric analyses were of considerable interest, as they would permit validation of the general results (exhaustion and unfixed dye values) found by HPLC. Therefore, the preparation of the standard solutions was optimised in order to obtain similar compositions of the residual dyebath [12].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Study on analytical methods for quantifying the non‐adsorbed reactive dye forms in an exhausted dyebath

Chemchame

Popikov

Soufiaoui³

2012

Coloration Technology

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Reported herein are the results of an analysis of the compatibility of three methods for quantifying the non-adsorbed forms of reactive dyes, in an exhausted dyebath, of the type monochlorotriazine ⁄ b-sulphatoethylsulphone used in dyeing cellulosic fibres (cotton). The first method is based on spectrophotometric analysis and involves measuring the absorbance of the residual dyebath (after the dyeing process), the second is based on colorimetric analysis and involves measuring the reflectance of the dyed fabric and the third is based on high-performance liquid chromatography. The purpose of the latter is to identify and quantify the non-adsorbed dye forms in the residual dyebath. The calculated exhaustion values unequivocally prove the reliability and compatibility of these methods.

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Section: Resultsmentioning

confidence: 84%

Section: Analysis Of CI Reactive Yellow 145mentioning

confidence: 99%

Section: Analysis Of CI Reactive Yellow 145mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Study on analytical methods for quantifying the non‐adsorbed reactive dye forms in an exhausted dyebath

Chemchame

Popikov

Soufiaoui³

2012

Coloration Technology

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Adsorption properties and mechanisms of novel biomaterials from banyan aerial roots via simple modification for ciprofloxacin removal

Fan

Wan

et al. 2020

Science of The Total Environment

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Hydrolyzed Reactive Red 195 adsorption on cellulose: Experimental and theoretical investigations

Zhang,

Zhao,

et al. 2024

Journal of Engineered Fibers and Fabrics

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In this investigation, the mechanism of dye transfer during the mixed washing of natural cellulosic fabrics was elucidated through a comprehensive study of the hydrolysis of Reactive Red 195 (RR 195) and the subsequent adsorption of its hydrolysis products onto cellulose, approached both experimentally and theoretically. Initially, Reversed-phase high-performance liquid chromatography (RP-HPLC) was employed to identify the final products of Reactive Red 195 hydrolysis, collectively referred to as the unfixed dye substance ( UDS). This data provided theoretical insight into the hydrolysis mechanism of the dye. Following this identification, an adsorption kinetic model was established to delineate the interaction of the hydrolysis products with cellulose. Adsorption exhibited its maximal rate at a temperature of 60°C, under conditions of a wash bath ratio of 120:1 and a pH value of 7. Furthering the investigation, a molecular dynamics model was constructed to detail the adsorption process of these hydrolysis products on the hydrophobic surface Iβ(1 0 0) of cellulose within an aqueous environment. This model offered precise insights into the adsorption volume, kinetics, and mechanistic interaction at a molecular scale. Conclusive evidence from both theoretical analyses and experimental results suggested that the hydrolysis products, devoid of reactive groups, were incapable of chemically interacting with the hydroxyl groups inherent to cellulose. Instead, it was discerned that these products underwent a physical adsorption process onto the cellulose surface. Such adsorptive behavior is postulated to be a predominant factor influencing the dye transfer phenomenon in mixed washing conditions.

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Study of analytical methods for quantifying unfixed form of bifunctional reactive dyes used in dyeing cellulosic fibers (cotton)

Cited by 6 publications

References 11 publications

Study on analytical methods for quantifying the non‐adsorbed reactive dye forms in an exhausted dyebath

Study on analytical methods for quantifying the non‐adsorbed reactive dye forms in an exhausted dyebath

Adsorption properties and mechanisms of novel biomaterials from banyan aerial roots via simple modification for ciprofloxacin removal

Hydrolyzed Reactive Red 195 adsorption on cellulose: Experimental and theoretical investigations

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