Institute of Polymer and Dye Technology, Faculty of Chemistry, Lodz University of Technology, Stefanowskiego 16, 90-537 Lodz, Poland.
Institute of Fermentation Technology and Microbiology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Wolczanska 171/173, 90-530 Lodz, Poland.
Int J Biol Macromol. 2023 May 15;237:124143. doi: 10.1016/j.ijbiomac.2023.124143. Epub 2023 Mar 25.
In this study, eco-friendly cotton fabrics with antimicrobial and flame-retardant properties were produced using newly developed bioactive formulations. The new natural formulations combine the biocidal properties of the biopolymer (chitosan (CS)) and essential oil (thyme oil) (EO) with the flame-retardant properties of mineral fillers (silica (SiO), zinc oxide (ZnO), titanium dioxide (TiO), and hydrotalcite (LDH)). The modified cotton eco-fabrics were analyzed in terms of morphology (optical and scanning electron microscopy (SEM)), color (spectrophotometric measurements), thermal stability (thermogravimetric analysis (TGA)), biodegradability, flammability (micro-combustion calorimetry (MCC)), and antimicrobial characteristics. The antimicrobial activity of the designed eco-fabrics was determined against different kinds of microorganism (S. aureus, E. coli, P. fluorescens, B. subtilis, A. niger, C. albicans). The antibacterial effects and flammability of the materials were found to depend strongly on the compositions of the bioactive formulation. The best results were obtained for the samples of fabric coated with the formulations containing LDH and TiO filler. These samples showed the highest decreases in flammability, with heat release rate (HRR) values of 168 (W/g) and 139 (W/g), respectively, compared to the reference (233 W/g). The samples also showed very good inhibition of growth against of all the studied bacteria.
在这项研究中，使用新开发的生物活性配方制备了具有抗菌和阻燃性能的环保棉织物。新的天然配方将生物聚合物（壳聚糖（CS））和精油（百里香油）（EO）的杀菌性能与矿物填料（二氧化硅（SiO）、氧化锌（ZnO）、二氧化钛（TiO）和水滑石（LDH））的阻燃性能相结合。对改性棉生态织物进行了形态学（光学和扫描电子显微镜（SEM））、颜色（分光光度测量）、热稳定性（热重分析（TGA））、生物降解性、可燃性（微型燃烧量热法（MCC））和抗菌特性分析。设计的生态织物对不同类型的微生物（金黄色葡萄球菌、大肠杆菌、荧光假单胞菌、枯草芽孢杆菌、黑曲霉、白色念珠菌）的抗菌活性进行了测定。抗菌效果和材料的可燃性发现强烈依赖于生物活性配方的组成。用含有 LDH 和 TiO 填料的配方涂覆的织物样品得到了最佳的结果。与对照（233 W/g）相比，这些样品的可燃性降低最大，热释放率（HRR）值分别为 168（W/g）和 139（W/g）。这些样品对所有研究的细菌的生长抑制作用也非常好。
