scholarly journals Effect of caustic treatment on cotton/modal blended fabric

2020 ◽  
Vol 71 (05) ◽  
pp. 427-431
Author(s):  
BILAL ZAHID ◽  
MUHAMMAD ALI ◽  
MUHAMMAD ZUBAIR ◽  
KAREEM MEHMOOD
Keyword(s):  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Woven Fabric ◽  
Fastness Properties ◽  
Tear Strength ◽  
Caustic Treatment ◽  
Colour Strength

Attempt has been made to assess the cotton/modal (60:40) blended woven fabric properties after mercerization with caustic lye of different strengths. Cotton/Modal (60:40) fabric was subjected to bulk mercerization process and subsequently dyed with reactive dyes. The colour strength, fastness properties (washing, staining and rubbing etc.), tensile and tear strength and shrinkage were characterized. The results of this study indicate that cotton/modal blended fabric that was considered in this study can be processed under similar conditions as those that are maintained for cotton fabrics generally and that the aforementioned properties are improved generally.

Research in the Cold Pad-Batch Dyeing Process for the Cationic Cotton

2013 ◽  
Vol 864-867 ◽  
pp. 2145-2151 ◽  
Author(s):  
Xiao Xu Teng ◽  
Jian Wei Shi ◽  
Shu Fen Zhang
Keyword(s):  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Fastness Properties ◽  
Dye Penetration ◽  
Untreated Cotton ◽  
Dyeing Process ◽  
Quaternary Ammonium Group ◽  
Cationic Cotton ◽  
Dyeing Method ◽  
Selection Of

Cotton fabrics pretreated with cationic polyacrylamide with quaternary ammonium group were dyed with three reactive dyes in the absence of salt by cold pad-batch dyeing method. The influences of various conditions in the dyeing process, including urea dosage, selection of alkali agent and its dosage, batching time and batching temperature on colour yield, were analyzed. Fastness properties of the dyed cotton and the dye penetration were investigated between the pretreated and untreated cotton. The results showed that the dyesK/Svalues of the pretreated cotton were improved compared with those of the untreated one, in addition, the penetration and fastness properties of the dyed cationic cotton were satisfied for application.

Antibacterial evaluation of cotton fabrics by using novel sulfonamide reactive dyes

2017 ◽  
Vol 46 (3) ◽  
pp. 210-217 ◽  
Author(s):  
Hatem E. Gaffer ◽  
Mohamed R. Elgohary ◽  
Hassan Ali Etman ◽  
Saad Shaaban
Keyword(s):  
Diazonium Salt ◽  
Reactive Dyes ◽  
Coupling Reaction ◽  
Antimicrobial Activities ◽  
Cotton Fabrics ◽  
Proton Nuclear Magnetic Resonance ◽  
Fastness Properties ◽  
Light Fastness ◽  
Content Type ◽  
Cellulose Fabrics

Purpose The purpose of this paper was to synthesize novel antibacterial reactive dyes for dyeing cotton fabrics. Design/methodology/approach Four synthetic novel antibacterial reactive dyes based on sulfonamide (D1-D4) have been synthesized by the coupling reaction of sulfonamide diazonium salt with sulfonamido-cyanurated 7-amino-4-hydroxynaphthalene-2-sulfonic acid “j-acid”. The chemical structure of the synthesized dyes was secured by their spectral data [infra red (IR) and proton Nuclear magnetic Resonance (1HNMR)]. Findings The prepared reactive dyes (D1-D4) were applied to cotton fabrics. Optimum conditions of the dying samples at sodium sulfate 100 g/l, liquor ratio (L.R.) 1:10, sodium carbonate 20 g/l at 80°C (D1, D2 and D4), 60°C (D3 for 60 min) were investigated. The fastness properties toward washing, perspiration, rubbing and light were evaluated. Dyed fabrics showed good light fastness property and good to very good washing and perspiration fastness properties according to the gray scale. Antimicrobial activities for synthesized dyes showed excellent activity against gram-negative organisms such as Pseudomonas aeruginosa and Proteus mirabilis faecalis, whereas very good activity against gram-positive organisms such as Staphylococcus aureus and Enterococcus faecalis with respect to the standard drugs ampicillin and chloramphenicol. Originality/value The principle advantages in this study were that the synthesis of novel synthesized dyes by introducing bisulfonamide-based moieties to increase the antimicrobial activity of the cellulose fabrics could be used as a medical textile, short reaction time and reaction procedure conducted in few steps, the work up is convenient and thus the starting material can be easily prepared.

scholarly journals Colour Strength and Washing Fastness Properties of Cotton Fabric Dyed with Kasunda Flower Extract

2020 ◽  
Vol 8 (5) ◽  
pp. 2019-2022
Keyword(s):  
Cotton Fabric ◽  
Cotton Fabrics ◽  
Natural Dyes ◽  
Chemical Processing ◽  
Fastness Properties ◽  
Washing Fastness ◽  
Textile Materials ◽  
Flower Extract ◽  
Colour Strength ◽  
The One

Colouration of textile materials is most important step in whole chemical processing of textiles department. There are various sources of obtain colours/dyes for the application. Natural dyes are the one of the emerging area in the field of dyeing of textile materials due to their eco-friendly in nature. In the present study the kasunda flower powder is used as a dye along with the mordants, which improves the dye up take and colour strength. The kasunda flower powder and natural mordants were applied in different concentrations to cotton fabrics and measured the colour strength in terms of K/S and washing fastness properties.

scholarly journals Nucleophilic Addition of Reactive Dyes on Amidoximated Acrylic Fabrics

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Reda M. El-Shishtawy ◽  
Manal M. El-Zawahry ◽  
Fatma Abdelghaffar ◽  
Nahed S. E. Ahmed
Keyword(s):  
Nucleophilic Substitution ◽  
Nucleophilic Addition ◽  
Reactive Dyes ◽  
New Method ◽  
Fastness Properties ◽  
Reactive Dyeing ◽  
Chemical Structures ◽  
Ftir Studies ◽  
Colour Strength ◽  
Acrylic Fabric

Seven reactive dyes judiciously selected based on chemical structures and fixation mechanisms were applied at 2% owf of shade on amidoximated acrylic fabrics. Amidoximated acrylic fabric has been obtained by a viable amidoximation process. The dyeability of these fabrics was evaluated with respect to the dye exhaustion, fixation, and colour strength under different conditions of temperature and dyeing time. Nucleophilic addition type reactive dyes show higher colour data compared to nucleophilic substitution ones. FTIR studies further implicate the binding of reactive dyes on these fabrics. A tentative mechanism is proposed to rationalize the high fixation yield obtained using nucleophilic addition type reactive dyes. Also, the levelling and fastness properties were evaluated for all dyes used. Excellent to good fastness and levelling properties were obtained for all samples irrespective of the dye used. The result of investigation offers a new method for a viable reactive dyeing of amidoximated acrylic fabrics.

The study of needle type influence on woven fabric surface area during the sewing process

2021 ◽  
pp. 004051752110191
Author(s):  
Beti Rogina-Car ◽  
Stana Kovačević
Keyword(s):  
Computer Program ◽  
Tensile Properties ◽  
Surface Area ◽  
Cotton Fabrics ◽  
Woven Fabric ◽  
Microscopic Images ◽  
Needle Type ◽  
Fabric Surface ◽  
Needle Point

The aim of this study was to investigate the damage to cotton fabrics (ticking and damask) caused by stitching with three types of needle point shapes (R, SES and SUK) and four needle sizes (70, 80, 90 and 100 Nm). Damage to the yarn and the surface area of the hole were investigated. Based on the results, it can be concluded that two types of damage occur during sewing: the needle passes through the warp/weft (it displaces the yarn) and the needle damages the warp/weft. An analysis and comparison of the surface area of the holes was carried out, obtained by a computer program based on microscopic images. The results show greater damage to the yarn at the needle piercing point in the ticking due to higher density, friction and low yarn migration. The largest surface area of the holes was produced when sewing with SUK-designated needles on ticking and damask. When sewing damask, R-designated needles cause the least damage to the piercing point, whereas SES-designated needles give the best results when sewing the ticking. Thread damage was further confirmed by testing the tensile properties of the yarn at the needle piercing points.

scholarly journals Renovation and Reuse of Reactive Dyeing Effluent by a Novel Heterogeneous Fenton System Based on Metal Modified PTFE Fibrous Catalyst/H2O2

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Bing Li ◽  
Yongchun Dong ◽  
Zhizhong Ding ◽  
Yiming Xu ◽  
Chi Zou
Keyword(s):  
Reactive Dyes ◽  
Cotton Fabrics ◽  
Molar Ratio ◽  
The Novel ◽  
Heterogeneous Fenton ◽  
Reactive Dyeing ◽  
Toc Removal ◽  
Dyeing Effluent ◽  
Fenton System

Cu-Fe bimetallic grafted polytetrafluoroethylene (PTFE) fiber complexes were prepared and optimized as the novel heterogeneous Fenton catalysts for the degradation of reactive dyes under UV irradiation. Cotton fabrics were dyed with three reactive dyes, namely, Reactive Red 195, Reactive Yellow 145, and Reactive Blue 222, in tap fresh water using exhaustion process. The spent dyeing effluents were then collected and degraded with the optimized Cu-Fe bimetallic grafted PTFE fiber complex/H2O2system. The treated dyeing effluents were characterized and reused for the dyeing of cotton fabrics through the same process. The effect of reuse process number on quality of the dyed cotton fabrics was examined. The results indicated that the Cu-Fe bimetallic modified PTFE fiber complex with a Cu/Fe molar ratio of 2.87 was found to be the most effective fibrous catalyst, which enhanced complete decolorization of the treated dyeing effluents with H2O2in 4 h. However, the TOC removal for the treated dyeing effluents was below 80%. The dyeing quality was not affected for three successive cycles. The increase in residual TOC value influences fourth dyeing cycle. Further TOC reduction of the treated effluents is needed for its repeated reuse in more than three dyeing cycles.

scholarly journals Dyeing and Fastness Properties of Novel Phthalocyanine-based Dyes on Woven Cotton Fabrics

2017 ◽  
Vol 54 (2) ◽  
pp. 87-93 ◽  
Author(s):  
Seung Hee Park ◽  
Kyu Oh Kim ◽  
Jung Jin Lee
Keyword(s):  
Cotton Fabrics ◽  
Fastness Properties
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