Sustainable Alkaline Hydrolysis of Polyester Fabric at Low Temperature

Čorak, Ivana; Tarbuk, Anita; Djordjević, Dragan; Višić, Ksenija; Botteri, Lea

doi:10.3390/ma15041530

Cited by 38 publications

(20 citation statements)

References 34 publications

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“…A On the other hand, the water absorption of bio-treated fabrics was enhanced remarkably to different extents depending on the fabric nature (Figure 1-e). This can be explained in terms of creation of hydrophilic carboxylic and hydroxyl groups along PET macromolecules under the influence of the lipase enzyme, as shown in Equation 5 [30] These findings match well with the surface resistivity measurements (Figure 2). The static charge on the fabric surfaces (indicated by the values of their surface resistivity) of the bio-treated samples 7 and 8 are lower than that on the corresponding untreated ones.…”

Section: Physico-mechanical Properties Of the Biotreated Fabricssupporting

confidence: 85%

Physical Evaluation and CLO3D Simulation of Some Characteristics of Bio-treated Knitted Polyester/Lycra Fabrics

El-Newashy

El-Sayed

2022

Egypt. J. Chem.

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The knitted fabrics which are used in the manufacture of sportswear should be fitting to some parts of the body with enough stretch-ability; namely the breast area including the under-arms. Herein, we adopt CLO3D simulation system to assign the proper blending ratio and fabric weight of selected bio-treated knitted polyester/Lycra (PET/L) blended fabric for manufacture of sportswear. Three different blending ratios (96/4, 94/6 and 92/8) with three different fabric weights; light (160 g/m 2 ), medium (200 g/m 2 ), and heavy (250 g/m 2 ) of PET/L knitted fabrics were fabricated. These fabrics were bio-treated with the lipolytic enzyme Lipolase 100L-EX to enhance the fabric hydrophilicity and to reduce the accumulation of electrostatic charge on the fabric surface without severe loss in fabric weight and burst force. Results of this investigation revealed that the light and medium weight bio-treated PET/L (92/8) knitted fabric exhibited the highest hydrophilicity and lowest electrostatic charge; thus they have been selected for evaluation by CLO3D simulation system. The selected bio-treated samples were found to have appropriate fitting (pressure) and stretch-ability at the shoulders, under-arms, and breast areas of a soft bra usually used in some women's sportswear. Bio-treatment of the said fabric with Lipolase 100L-EX had no significant effect on the fabric thickness and air permeability. The polyester component of the bio-treated PET/L knitted fabrics was found to be dyeable with the cationic dye C.I. Basic Red 18. The scanning electron microscopy revealed no deterioration in bio-treated knitted fabrics which assures that the used lipase enzyme is a benign reagent for activation of the polyester fibre surface.

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Section: Physico-mechanical Properties Of the Biotreated Fabricssupporting

confidence: 85%

Physical Evaluation and CLO3D Simulation of Some Characteristics of Bio-treated Knitted Polyester/Lycra Fabrics

El-Newashy

El-Sayed

2022

Egypt. J. Chem.

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“…These physical and chemical changes in the fiber surface result in the formation of small craters and increase a surface area with extra functional groups (Corak et al , 2022).…”

Section: Resultsmentioning

confidence: 99%

“…Alkalis attack PET chains and hydrolyze them. Hydrolyzed fabrics have better wettability and dyeability as well as a silk-like appearance and luster (Corak et al , 2022).…”

Section: Resultsmentioning

confidence: 99%

Improving the color strength of poly(ethylene terephthalate) fabrics with a turmeric natural dye

Zare

2022

PRT

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Purpose This study aims to enhance the dyeability of polyester fabrics with turmeric natural dyes through plasma and alkaline treatments. The aim is to achieve better color strength in dyed samples without significant changes in their other properties. This is done while the weight loss is kept in a range with no considerable effect on those properties. Design/methodology/approach The surface of a poly(ethylene terephthalate) fabric was modified using oxygen plasma at a low temperature. The alkaline hydrolysis of that polyester fabric was also done through treating it with an aqueous sodium hydroxide (NaOH) solution. The untreated and treated polyester fabrics were studied for the changes of their physical characteristics such as weight loss, wetting behavior, strength loss, bending length, flexural rigidity and K/S and wash fastness. The samples were treated with plasma and sodium hydroxide and dyed with a turmeric natural dye. Findings In comparison to the untreated sample, the plasma-treated, alkaline-treated and plasma treatment followed by alkaline hydrolysis polyester experienced 9.3%, 68.6% and 102.3% increase in its color depth as it was dyed with a turmeric natural dye, respectively. The plasma treatment was followed by alkaline hydrolysis. The improvement in the color depth could be attributed to the surface modification. Originality/value In this paper, investigations were conducted of the separate effects of plasma treatment and alkaline hydrolysis as well as their synergistic effect on the dyeing of the polyester fabric with a natural dye obtained from turmeric.

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“…Recent reports focus on SCDD for synthetic and biopolymeric material such as polystyrene [ 8 ], polyester [ 9 ], cotton [ 4 , 10 ], polyurethane [ 11 ], wool [ 12 ], nylon [ 9 ], and polyethylene terephthalate (PET) [ 1 , 13 , 14 ]. Each polymer, as a host, possesses a different affinity with disperse dye through hydrogen bonding and hydrophobic interaction [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Azo Disperse Dyes with High Absorption for Efficient Polyethylene Terephthalate Dyeing Performances in Supercritical Carbon Dioxide

Cheng

Benas²,

Liang³

et al. 2022

Polymers

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Supercritical carbon dioxide dyeing (SCDD) not only enables strong dyeing performance for a versatile range of polymer material but is also regarded as a green chemical media due to its low environmental impact as well as low risk of product denaturation. Over the decades, azo disperse dyes have been revealed to be efficient dyes and represent the wide majority of dyeing material. Azo dyes possess a wide variety of functional groups to optimize dye synthesis and tune the light absorption properties. Using SCDD, end-chain of different lengths, and functional group exhibiting various electronic affinity, six disperse red azo dyes were synthesized to investigate dyeing performances as woven fabric type, color strain, and color fastness after dyeing are discussed. Dye structure synthesized through a coupling reaction was confirmed by 1H NMR and mass spectroscopy. We found that the light absorption wavelength and absorption coefficient value variation are associated to the nature of the functional group. From the color strength values of the polyethylene terephthalate woven after dyeing, we find that the fiber host and dye dopant chemical structure greatly influence the dyeing process by providing enhanced woven, color strain, and color fastness. In comparison with commercial products, our approach not only improves the dyeing process but also guarantees a strong resistance of the dyed product against water, detergent, perspiration, abrasion, and friction.

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Sustainable Alkaline Hydrolysis of Polyester Fabric at Low Temperature

Cited by 38 publications

References 34 publications

Physical Evaluation and CLO3D Simulation of Some Characteristics of Bio-treated Knitted Polyester/Lycra Fabrics

Physical Evaluation and CLO3D Simulation of Some Characteristics of Bio-treated Knitted Polyester/Lycra Fabrics

Improving the color strength of poly(ethylene terephthalate) fabrics with a turmeric natural dye

Synthesis of Azo Disperse Dyes with High Absorption for Efficient Polyethylene Terephthalate Dyeing Performances in Supercritical Carbon Dioxide

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