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Diethylene triamine penta methylene phosphonic acid encountered silver ions: a convenient method for preparation of flame retardant and antibacterial lyocell fabric

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Abstract

Ammonium salt of diethylene triamine penta methylene phosphonic acid (ADTPMPA), a novel flame retardant, was synthesized and grafted on the lyocell fabric to obtain a kind of flame retardant lyocell fabric (FR-lyocell). Then FR-lyocell was coated by Ag nanoparticles (Ag NPs) to fabricate flame retardant and antibacterial lyocell fabric (FR-Ag-lyocell). The elemental composition, surface morphology, combustion behavior and antibacterial activity of the lyocell fabric before and after modification were investigated. The flame retardant and antibacterial mechanism of FR-Ag-lyocell fabric was also analyzed. The limiting oxygen index (LOI) values of FR-Ag-lyocell fabric before and after 20 laundering cycles (LCs) reached 44.8% and 31.3%, respectively. The treated lyocell fabric possessed lower peak of heat release rate (pHRR) and total heat release (THR) values compared with control lyocell fabric. The FR-Ag-lyocell fabric exhibited excellent antimicrobial ability against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), even after 10 LCs. These results indicated that FR-Ag-lyocell fabric had durable flame retardant and antibacterial properties.

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Acknowledgments

The authors are very thankful for the financial supports of the National Natural Science Foundation of China (No. 51573134), the National Key Research and Development Program of China (2017YFB0309000), and the Beijing Tianjin Hebei collaborative innovation community construction project (No. 20541401D).

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Contributions

MYX and YBG contributed equally to this work. MYX designed the experiments and contributed to the material fabrication. YBG analyzed the corresponding results. MYX was responsible for the XPS, XRD and FT-IR measurements. MYX and YBG contributed to the cone calorimeter test and the corresponding analysis. YLR and XHL co-wrote and revised the manuscript. All authors commented on the final manuscript.

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Correspondence to Yuanlin Ren.

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The authors declared that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. All the authors listed have approved the manuscript enclosed.

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Xiao, M., Guo, Y., Zhang, J. et al. Diethylene triamine penta methylene phosphonic acid encountered silver ions: a convenient method for preparation of flame retardant and antibacterial lyocell fabric. Cellulose 28, 7465–7481 (2021). https://doi.org/10.1007/s10570-021-04000-8

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  • DOI: https://doi.org/10.1007/s10570-021-04000-8

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