College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame Retardant Textile Materials, State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, China.
College of Textiles & Clothing, Institute of Functional Textiles and Advanced Materials, National Engineering Research Center for Advanced Fire-Safety Materials D & A (Shandong), Qingdao Key Laboratory of Flame Retardant Textile Materials, State Key Laboratory of Bio-Fibers and Eco-textiles, Qingdao University, Qingdao 266071, China..
Int J Biol Macromol. 2024 Jun;271(Pt 2):132407. doi: 10.1016/j.ijbiomac.2024.132407. Epub 2024 May 14.
Since the fire hazards of polyester-cotton blended (PTCO) fabrics and the hidden dangers of bacterial infection concerns caused by the contained cotton fiber, the design of flame retardant and antibacterial PTCO fabrics has received considerable attention. In this work, flame-retardant PTCO fabrics with satisfactory antibacterial properties were fabricated via a convenient and eco-friendly impregnation treatment involving guanidine phosphate (GP) and polyethylenimine (PEI). The prepared PTCO fabrics demonstrated excellent flame retardancy with a high limiting oxygen index value of 30.5 % and self-extinguishing capability, the damaged length was only 34 mm in the vertical flammability test. Furthermore, the peak heat release rate and the total heat release of coated PTCO fabrics were reduced significantly by 49 % and 38 %, respectively, indicating a substantial enhancement in fire safety. According to the analysis of the char residues and volatiles, GP presented great catalytic carbonization property, and PEI assisted the formation of the dense and stable carbon layer. The stable carbon layer effectively restricted mass and oxygen transfer between the PTCO fabrics and the environment. In addition, the introduction of PEI also produced more nonflammable gases to enhance the flame retardancy of the PTCO fabrics. Importantly, the GP/PEI coating barely deteriorate the physical and mechanical properties of the PTCO fabrics. The antibacterial rate of the GP/PEI-coated PTCO fabrics against Escherichia coli and Staphylococcus aureus was 99.99 %, similar to that of GP-coated fabrics, indicating the efficacy antibacterial properties of GP, and the addition of PEI did not compromise the antibacterial properties of GP. This work offers an efficient and simple approach to producing multifunctional PTCO fabrics with excellent flame retardancy and antibacterial properties, which are hopeful to expand the promising application of PTCO fabrics.
由于聚酯棉混纺（PTCO）织物的火灾隐患以及棉纤维引起的细菌感染隐患，具有令人满意的抗菌性能的阻燃抗菌 PTCO 织物的设计受到了相当大的关注。在这项工作中，通过涉及胍磷酸盐（GP）和聚乙烯亚胺（PEI）的方便且环保的浸渍处理，制备了具有良好抗菌性能的阻燃 PTCO 织物。所制备的 PTCO 织物具有出色的阻燃性能，极限氧指数值高达 30.5%，具有自熄能力，垂直可燃性测试中损坏长度仅为 34mm。此外，涂覆的 PTCO 织物的峰值放热率和总放热率分别显著降低了 49%和 38%，表明其火灾安全性得到了极大提高。根据炭残留物和挥发物的分析，GP 表现出出色的催化碳化性能，PEI 有助于形成致密稳定的碳层。稳定的碳层有效地限制了 PTCO 织物与环境之间的质量和氧气转移。此外，PEI 的引入还产生了更多的不可燃气体，从而增强了 PTCO 织物的阻燃性。重要的是，GP/PEI 涂层几乎不会降低 PTCO 织物的物理和机械性能。GP/PEI 涂层的 PTCO 织物对大肠杆菌和金黄色葡萄球菌的抑菌率达到 99.99%，与 GP 涂层织物相似，表明 GP 的抑菌效果，而添加 PEI 并没有降低 GP 的抑菌性能。这项工作提供了一种高效简便的方法来生产具有优异阻燃性和抗菌性能的多功能 PTCO 织物，有望扩大 PTCO 织物的应用前景。
