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Study of microwave-assisted sequential color stripping of cellulosic fabric dyed with reactive blue black 5 and reactive turquoise CLB

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Abstract

Color stripping is a primary technique for recycling fabric. In view of cost, time and energy effectiveness in present research, microwave assisted sequential stripping of cotton with fixed Reactive Blue Black 5 and Turquoise CLB was developed as an alternate method to conventional stripping. After microwave assisted alkali → oxidation → reduction treatment, 98% and 97% stripping efficiency was obtained in 120 s, for reactive blue black 5 and reactive turquoise CLB respectively. Similarly, 97% and 94% stripping efficiency was calculated by sequential acid → oxidation → reduction in 120 s, while similar results were obtained by conventional methods in 60 min. However, a minor discrepancy in terms of weight loss and tearing strength was also observed in the sequential microwave assisted methods in comparison to conventional methods. Assessment of redyeability of stripped cotton fabric against all in-vogue methods proved microwave assisted method to be a better commercial option than any other one for stripped fabric quality, time, energy and cost effectiveness.

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Acknowledgments

This manuscript is a part of M.Phil. dissertation of Mubashar Alam. The textile and color chemistry laboratory, department of chemistry, University of Agriculture, Faisalabad, Pakistan provided facilities for this research work. Applied chemistry laboratories of the Government College University, Faisalabad and National Textile University, Faisalabad, Pakistan provided facilities for analysis.

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MA Methodology and all experimental work, Formal analysis, Conceptualization Data curation, original draft preparation SA Supervision, Project development, and management, Funding acquisition, Conceptualization, Laboratory facilities, Resources, Validation, Investigation SN Editing and review of the original draft TZ Data curation AA Drafting and experimental work MAAK Editing and review of manuscript.

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Correspondence to Shaukat Ali.

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Alam, M., Ali, S., Noureen, S. et al. Study of microwave-assisted sequential color stripping of cellulosic fabric dyed with reactive blue black 5 and reactive turquoise CLB. Cellulose 30, 5339–5354 (2023). https://doi.org/10.1007/s10570-023-05182-z

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  • DOI: https://doi.org/10.1007/s10570-023-05182-z

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