Influence of grafting with acrylic acid on the dyeing properties of polyamide 6.6 fibres

Makhlouf, Chahira; Ladhari, Nizar; Roudesli, Sadok; Sakly, Faouzi

doi:10.1111/j.1478-4408.2012.00356.x

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…The washing fastness rating of the dyed nylon 6 fabric under supercritical medium was excellent for both fading and staining with ratings ranging from 4 to 5, while those of exhaustion dyeing were excellent for staining and ranged from moderate to excellent for fading (2)(3)(4)(5). This result is probably due the high affinity of the colored hydrazonopropanenitrile dyes for nylon 6 fibers.…”

Section: Color Fastnessmentioning

confidence: 93%

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Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

Elmaaty

El-Aziz

et al. 2015

Fibers

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Abstract:In this work, a supercritical carbon dioxide assembly was successfully constructed for dyeing Nylon6 fabric. Primary experiments were carried out to confirm the possibility of bringing the dyeing up to factory scale. A series of disperse azo dyes with potential antibacterial activity were applied to dye the fabric under our study in supercritical carbon dioxide (scCO2). The factors affecting the dyeing conditions (i.e., dye concentration, time, temperature and pressure) and functional properties were discussed and compared with those in aqueous dyeing. The comparison revealed that elimination of auxiliary chemicals such as salt, carrier or dispersing agent has no diverse effect on dyeing. The color strength of the dyed fabric evaluated by using K/S measurements increased by increasing dye concentration from 2% to 6% owf. (on weight of fabric). The nylon6 fabrics dyed in supercritical carbon dioxide have good fastness properties, and especially light fastness compared with conventional exhaustion dyeing. Antibacterial activity of the dyed samples under supercritical conditions was evaluated and the results showed excellent antibacterial efficiency.

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Section: Color Fastnessmentioning

confidence: 93%

“…Correspondingly, polyamide fabrics are utilized in considerable applications of the textile industry [5,6].…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

Elmaaty

El-Aziz

et al. 2015

Fibers

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“…After dyeing, the dyed samples were removed, rinsed thoroughly in tap water, and allowed to dry in the open air. [18][19]…”

Section: Dyeingmentioning

confidence: 99%

Preparation and characterization of cationic dyeable polycaprolactam modified with 5-sulfoisophthalic acid sodium and poly(ethylene glycol)

Xiong

Yin

2016

Textile Research Journal

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Unmodified nylon is dyeable to a single color only, and is almost exclusively dyed with acid dyes that are absorbed with amine groups of nylon molecules. Two types of polycaprolactam (PA6) copolyamide were successfully prepared with 5-sulfoisophthalic acid monosodium salt and poly(ethylene glycol) (PEG) units named cationic dyeable polyamide (CD-PA6) and easy cationic dyeable polyamide (ECD-PA6). The chemical and crystalline structures of CD-PA6 and ECD-PA6 were characterized by Fourier transform infrared spectroscopy and wide angle x-ray diffraction, and their thermal properties were tested by differential scanning calorimetry and thermogravimetric analysis, respectively. In addition, the rheological behavior and mechanical properties of copolyamide are presented in this paper. The influence of chemical modification in polyamide 6 fibers on the dyeing properties was investigated using cationic dye (methylene blue). The incorporation of PEG not only destroyed the regularity of the molecular chain arrangement and created more amorphous regions of ECD-PA6 samples, but also led to nylon 6 changing from the α-form to the γ-form. In addition, the crystallinities and degradation temperatures of samples which corresponded to different mass losses of CD-PA 6 and ECD-PA6 declined as the sulfonic group content increased, since large –SO3Na side groups in the copolymers prevented the chain molecules from tightly coagulating and obstructed the formation of larger crystals. Based on the analysis of the dyeing, a distinct improvement in tinctorial affinity and wash fastness for modified fibers compared with unmodified fibers was revealed.

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“…Under a similar mechanism, this kind of grafting approach also serves as a successful way to improve the cationic dyeing property of some man-made fibers, such as bamboo rayon 14 and polyamide 6.6. 15 The reasons for the enhancement of the dye uptake are ascribed to two aspects: (1) the good hydrophilicity of the carboxyl groups; (2) the close bonding between the carboxyl groups and the cationic dyes. However, the grafting rate is still very limited with the current strategy.…”

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confidence: 99%

Improved cationic dyeability of thermotropic liquid crystal polyarylate fabrics by ultraviolet irradiation-induced grafting of acrylic acid

Jiang

Liu

Chen

et al. 2021

Textile Research Journal

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As one of the most promising high-performance fibers, it is worthwhile to investigate the dyeing property of thermotropic liquid crystal polyarylate (TLCP) fibers. In this work, ultraviolet (UV) irradiation-induced grafting using the acrylic acid (AAc) method was employed to improve the cationic dyeability of the TLCP fabrics. The TLCP fabrics were firstly immersed in an AAc monomer solution for 24 h, followed with the UV radiation process for grafting polymerization. The results showed that the dyeing performance to C.I. Basic Red 46 of the modified TLCP fabrics was remarkably improved. Through several characterizations, it was found that the AAc-grafted TLCP fibers became more roughened with many pits on the fiber surface, while the crystalline structure of the TLCP fibers was hardly affected. More importantly, carboxyl groups have been successfully introduced onto the TLCP fiber surface, which is the main reason for the good dye uptake. Therefore, this paper provides a simple and efficient way for the improvement of the cationic dyeing property of TLCP fabrics.

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Influence of grafting with acrylic acid on the dyeing properties of polyamide 6.6 fibres

Cited by 7 publications

References 14 publications

Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

Eco-Friendly Disperse Dyeing and Functional Finishing of Nylon 6 Using Supercritical Carbon Dioxide

Preparation and characterization of cationic dyeable polycaprolactam modified with 5-sulfoisophthalic acid sodium and poly(ethylene glycol)

Improved cationic dyeability of thermotropic liquid crystal polyarylate fabrics by ultraviolet irradiation-induced grafting of acrylic acid

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