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10.3390/ma12244209
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Article

Dyeing of Polyester with 4-Fluorosulfonylphenylazo-5-pyrazolone Disperse Dyes and Application of Environment-Friendly Aftertreatment for Their High Color Fastness

by
Sanghyun Yoon
1,
Byunghun Choi
1,
Md Morshedur Rahman
1,
Santosh Kumar
2,
Shekh Md Mamun Kabir
3 and
Joonseok Koh
1,2,*
1
Department of Organic and Nano System Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
2
Division of Chemical Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Korea
3
Department of Wet Processing Engineering, Bangladesh University of Textiles, Dhaka 1208, Bangladesh
*
Author to whom correspondence should be addressed.
Materials 2019, 12(24), 4209; https://doi.org/10.3390/ma12244209
Submission received: 1 November 2019 / Revised: 3 December 2019 / Accepted: 12 December 2019 / Published: 14 December 2019
(This article belongs to the Special Issue Dyeing Materials for Sustainable Textile Industry)
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Abstract

Dyeing and fastness properties of a series of 4-fluorosulfonylphenylazo-5-pyrazolone dyes on polyester were investigated in this study. The 4-nitrophenylazo-5-pyrazolone dyes were also synthesized to compare their dyeing and fastness properties on polyester with those of fluorosulfonyl-substituted analogues. The substantivity of 4-arylazo-5-pyrazolone derivatives containing a p-fluorosulfonyl group in the diazo component was lower than that of their nitro analogues which have a higher extinction coefficient and higher affinity because of the polar nitro group. They showed relatively hypsochromic color and lower chroma on polyester compared with their nitro analogues because of the relatively weaker electron-accepting power of the fluorosulfonyl group compared to the nitro group. Disperse dyeing of polyester with 4-fluorosulfonylphenylazo-5-pyrazolone disperse dyes achieved high color fastness and reduces the adverse environmental impact of the dyeing process by providing the option of performing alkali clearing instead of reductive clearing, which has high biological oxygen demand when discharged into the dyeing effluent and generates carcinogenic aromatic amines.
Keywords: 4-arylazo-5-pyrazolone dyes; fluorosulfonyl group; polyester; build-up properties; fastness properties; alkali clearing 4-arylazo-5-pyrazolone dyes; fluorosulfonyl group; polyester; build-up properties; fastness properties; alkali clearing

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MDPI and ACS Style

Yoon, S.; Choi, B.; Rahman, M.M.; Kumar, S.; Mamun Kabir, S.M.; Koh, J. Dyeing of Polyester with 4-Fluorosulfonylphenylazo-5-pyrazolone Disperse Dyes and Application of Environment-Friendly Aftertreatment for Their High Color Fastness. Materials 2019, 12, 4209. https://doi.org/10.3390/ma12244209

AMA Style

Yoon S, Choi B, Rahman MM, Kumar S, Mamun Kabir SM, Koh J. Dyeing of Polyester with 4-Fluorosulfonylphenylazo-5-pyrazolone Disperse Dyes and Application of Environment-Friendly Aftertreatment for Their High Color Fastness. Materials. 2019; 12(24):4209. https://doi.org/10.3390/ma12244209

Chicago/Turabian Style

Yoon, Sanghyun, Byunghun Choi, Md Morshedur Rahman, Santosh Kumar, Shekh Md Mamun Kabir, and Joonseok Koh. 2019. "Dyeing of Polyester with 4-Fluorosulfonylphenylazo-5-pyrazolone Disperse Dyes and Application of Environment-Friendly Aftertreatment for Their High Color Fastness" Materials 12, no. 24: 4209. https://doi.org/10.3390/ma12244209

APA Style

Yoon, S., Choi, B., Rahman, M. M., Kumar, S., Mamun Kabir, S. M., & Koh, J. (2019). Dyeing of Polyester with 4-Fluorosulfonylphenylazo-5-pyrazolone Disperse Dyes and Application of Environment-Friendly Aftertreatment for Their High Color Fastness. Materials, 12(24), 4209. https://doi.org/10.3390/ma12244209

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