Preparation of TA@Mg(OH)2/TPU Nanofiber Film and Its Composite Yarns with Flame Retardancy, Antibacterial and Mechanical Improvement 


Vol. 26,  No. 12, pp. 5345-5357, Dec.  2025
10.1007/s12221-025-01192-9


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  Abstract

A novel spinning method that integrates electrospun nanofiber strips into yarn structures has been developed to produce multifunctional yarns. The resulting yarn exhibited a core-sheath structure, with a core composed of tannic acid-modified magnesium hydroxide/thermoplastic polyurethane (TA@MH/TPU) nanofiber strip, sheathed by either pure cotton or cotton/sodium alginate blended fibers. The TA modification improved the dispersion of MH within the TPU matrix, leading to enhanced membrane strength compared to unmodified MH/TPU at equal loadings. The film containing 7% TA@MH/TPU demonstrated optimal mechanical properties (breaking strength of 1.43 MPa, elongation of 122.93%), flame retardancy (limiting oxygen index of 27.1%), and antibacterial efficacy killing ratios of 80.87% against E. coli and 85.07% against S. aureus. Yarns fabricated with this film, the TA@MH/TPU-cotton (CMSCY) retained the antibacterial functionality (67.48% against E. coli and 79.05% against S. aureus), and the TA@MH/TPU-cotton/sodium alginate (C/SAMSCY) achieved the flame retardancy with a limiting oxygen index of 27.8%. Notably, the CMSCY yarn showed a high tensile strength of 1.53 MPa, which was 15 times that of the TA@MH/TPU nanofiber film, addressing the application limitations of nanofiber membranes caused by their low mechanical strength. Given that electrospun membranes can be readily functionalized, this spinning method offers a promising strategy for producing composite yarns, particularly for developing multifunctional textile fabrics.

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  Cite this article

[IEEE Style]

S. Zhang, M. Guo, J. Wu, Y. Wang, X. Zhang, "Preparation of TA@Mg(OH)2/TPU Nanofiber Film and Its Composite Yarns with Flame Retardancy, Antibacterial and Mechanical Improvement," Fibers and Polymers, vol. 26, no. 12, pp. 5345-5357, 2025. DOI: 10.1007/s12221-025-01192-9.

[ACM Style]

Shuo Zhang, Mengyao Guo, Jiaqing Wu, Ying Wang, and Xin Zhang. 2025. Preparation of TA@Mg(OH)2/TPU Nanofiber Film and Its Composite Yarns with Flame Retardancy, Antibacterial and Mechanical Improvement. Fibers and Polymers, 26, 12, (2025), 5345-5357. DOI: 10.1007/s12221-025-01192-9.

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