One‐step dyeing of polyethylene terephthalate fabric, combining pretreatment and dyeing using alkali‐stable disperse dyes

Hou, Aiqin; Li, Min; Gao, Fengliang; Xie, Kongliang; Yu, Xiang

doi:10.1111/cote.12050

Cited by 24 publications

(16 citation statements)

References 25 publications

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“…However, a larger amount of dispersant is used in the water base because the dispersion of disperse dye is poor in water [1,2]. As a result, disperse dyeing in aqueous solutions brings about problems such as the assumption of a large amount of water and hazardous industrial effluents, leading to large energy and environmental challenges [3,4,5,6,7]. Therefore, much research is focused on non-aqueous systems for dyeing PET with disperse dye, such as the liquid paraffin dyeing system [8,9], supercritical carbon dioxide dyeing system [10,11,12], and organic solvent dyeing system [13,14,15].…”

Section: Introductionmentioning

confidence: 99%

Mechanism of Accelerant on Disperse Dyeing for PET Fiber in the Silicone Solvent Dyeing System

et al. 2019

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Disperse dyeing for polyethylene terephthalate (PET) fiber in different non-aqueous solvent dyeing systems have been extensively studied over the past decades. In the present work, disperse dyeing for PET was investigated in a silicone solvent dyeing system. The influence of accelerant on the fiber swelling, uptake of dye, K/S value of dyed fiber, and dye solubility in the silicone solvent were systematically investigated. Compared with no accelerant, the final uptake of the disperse dye (C. I. Disperse Blue 367) could increase to 81% with 20% accelerant in the silicone solvent dyeing system, and the K/S value of dyed fiber was also higher (3.3 for no accelerant vs. 13.2 for accelerant). The influence of accelerant on the performance of disperse dyeing was also studied. Firstly, the solubility of the disperse dye in the silicone solvent can be decreased by the accelerant. Moreover, the solubility of the disperse dye is inversely proportional to the K/S value and the uptake of the dye. In addition, although the silicone solvent can diffuse to the inner fiber and has a partial swelling in the PET fiber, the swelling of PET can be improved by the accelerant. Furthermore, the swelling of fiber can reach equilibrium when the amount of accelerant was 15% (the weight of fiber). Therefore, this eco-friendly dyeing technology has considerable potential for application to a broad array of chemical fibers.

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Section: Introductionmentioning

confidence: 99%

Mechanism of Accelerant on Disperse Dyeing for PET Fiber in the Silicone Solvent Dyeing System

et al. 2019

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“…Dyeing was carried out under alkalinic condition as described in the reference (Hou et al, 2013). The dyeing solution was prepared by using dye, 2 per cent (o.w.f., meaning on weight of fabric), and the liquor ratio being 1:10, auxiliary AS-1 (non-ionic surfactant) 1 g/l as levelling agent, and NaOH 5 g/l.…”

Section: Dyeing For Pet Fabricmentioning

confidence: 99%

“…Because of neutralising reaction and washing, the wet process usually consumes a large amount of water and energy (Metwally et al, 2004;El-Dougdoug, 2010). The alkalinic dyeing method of PET with disperse dyes has been developed (Joonseok, 2006;Peng et al, 2008;Hou et al, 2013). Dyeing PET fabric at alkalinic condition, more attention should be paid on the investigation of alkalinic stable disperse dyes and dispersion systems.…”

Section: Pigment and Resin Technologymentioning

confidence: 99%

Crystal morphology, dispersing stability and dyeing property of the disperse dye based on benzisothiazole

Song

Xie

et al. 2014

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Purpose The purpose of this paper is to synthesise a disperse dye based on benzisothiazole and to characterise its crystal morphology, dispersing stability, to study the relationship between the chemical structure and the dyeing property of the dye. Design/methodology/approach The disperse dye based on benzisothiazole, 3-(3-methyl-4-N-ethyl-N-benzyl-phenyldiazenyl)-5-nitro-2,1-benzisothiazoles, was synthesized. The disperse dye based on benzisothiazole, 3-(3-methyl-4-N-ethyl-N-benzyl-phenyldiazenyl)-5-nitro-2,1-benzisothiazoles, was synthesised. The chemical structure of the dye obtained was characterised by infrared spectrum Fourier transform infrared spectroscopy and nuclear magnetic resonance (1HNMR), and the crystal morphology was observed by Field Emission Scanning Electron Microscopy. Sodium salt of polycondensated naphthalenesulphonic acid (dispersing agent sodium salt of polycondensated naphthalenesulphonic acid [MF]) and a sulphonated amino polyether (anionic surfactant B600) were employed to grind and disperse the dye crystals. The dispersion property of the dye particles was characterised. Dyeing property of the dispersion system was also studied. Findings The dye formed spherical crystals that were made up of a large number of acicular crystals similar to spherical chrysanthemum. The crystals had warping crystal centres inside the spheres. The particle sizes of the dispersion with the mixture of B600 and MF had an uniform distribution and were smaller than that of the dispersion with only single dispersing agent MF. Dyeing with the dispersion system had an excellent reproducibility under alkalinic condition. Practical implications An alkalinic dyeing method for poly(ethylene terephthalate) (PET) with disperse dyes as a cleaner wet process had been developed. Such a process combined pretreatment and dyeing process using the alkali-stable disperse dyes and reduced the consumption of water and energy and improved production efficiency. Originality/value The crystal morphology, dispersion and dyeing properties of the synthesised disperse dye for dyeing PET fabric under alkalinic condition were discussed. This disperse dye has an important potential application in alkalinic dyeing method.

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“…It is often called the peeling of polyester because by measuring the diffraction of X-rays, it is proved that alkali hydrolysis appears only at the surface of fibers, and the inner morphological structure of fibers stays unchanged. Treatment of fabrics with alkali leads to the decrease of fiber diameter and exposure of the new surfaces and hence the fabric properties will change (5)(6)(7)(8).…”

Section: Introductionmentioning

confidence: 99%

Modeling of disperse dye adsorption on modified polyester fibers

et al. 2020

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The results of the research on the ability of adsorption of dye on polyester fibers at a temperature of 98?C are presented in this paper. The fibers were previously modified in aqueous solutions of NaOH, KOH or Al(OH)3. Typically, the dyeing of the fibers takes place at high temperatures and under pressure in the presence of the carrier. Previous processing before adsorption-dyeing, alkali hydrolysis, changes the surface morphology of polyester fibers. Based on dye exhaustion results, it was found that the dye adsorption on modified polyester fibers (degree of exhaustion 18.2 %, for a dye concentration of 200 mg?dm-3 and adsorption time of 5 min) has been bigger than adsorption to unmodified fibers (degree of exhaustion 10 %, for a dye concentration of 200 mg?dm-3 and adsorption time of 5 min). The five-parameter nonlinear model of Fritz-Schlunder is the most efficient in simulating isothermal adsorption of disperse dye on polyester fibers (the correlation coefficient is 0.995). Other adsorption models, Dubinin-Radushkevich, Marczewski-Jaroniec and Hill give poorer results and cannot be used to explain the adsorption of the disperse dye for polyester fibers (the correlation coefficients are 0.891, 0.922 and 0.973, respectively).

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One‐step dyeing of polyethylene terephthalate fabric, combining pretreatment and dyeing using alkali‐stable disperse dyes

Cited by 24 publications

References 25 publications

Mechanism of Accelerant on Disperse Dyeing for PET Fiber in the Silicone Solvent Dyeing System

Mechanism of Accelerant on Disperse Dyeing for PET Fiber in the Silicone Solvent Dyeing System

Crystal morphology, dispersing stability and dyeing property of the disperse dye based on benzisothiazole

Modeling of disperse dye adsorption on modified polyester fibers

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