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An eco-friendly B/P/N flame retardant for its fabrication of high-effective and durable flame-retardant cotton fabric

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Abstract

High-effective and eco-friendly flame retardants have been drawing more and more attention. Herein, an eco-friendly B/P/N flame retardant (BPNM) was synthesized by esterification of phosphorylated meglumine and boric acid, and then ammoniated by urea. The flame-retardant cotton fabric of high-efficiency and durability was fabricated by durable dipping-padding treatment. The results showed that the optimal preparation condition of BPNM were at the molar ratio of meglumine to boric acid 1:4 at 130 °C for 2 h. B/P/N elements of BPNM accounted for 35.73%. The limit oxygen index (LOI) of BPNM cotton fabric reached the maximum 40.1% and was 2.2 times higher than that of the pristine fabric. BPNM cotton fabric exhibited no after-flame time and after-glow time. Compared with the untreated fabric, peak heat release rate, total heat release rate, and CO2/CO of BPNM cotton fabric decreased by 6.6 times, 48%, and 10 times, respectively. BPNM cotton fabric gathered the gas phase and the condense phase flame-retardant mechanism. After 30 laundry cycles, LOI of BPNM cotton fabric still maintained at 30.5%.

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Funding

This work was financially supported by National Natural Science Foundation of China (No. 51703202) and the Fundamental Research Funds of Zhejiang Sci-Tech University (No. 2021Q003).

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SY wrote the main manuscript. WLL modified the main manuscript. WMH checked all the figures and tables. WYJ prepared Figs. 1, 2, 3, 4, 5, 6 and 7. LH prepared Figs. 8, 9, 10, 11 and 12. All authors reviewed the manuscript. All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by YS, LW, MW, YW and HL. The first draft of the manuscript was written by YS and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Lili Wang.

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Shi, Y., Wang, L., Wu, M. et al. An eco-friendly B/P/N flame retardant for its fabrication of high-effective and durable flame-retardant cotton fabric. Cellulose 30, 6621–6638 (2023). https://doi.org/10.1007/s10570-023-05265-x

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  • DOI: https://doi.org/10.1007/s10570-023-05265-x

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