Department of Personal Protective Equipment, Central Institute for Labour Protection-National Research Institute, Łódź 90-133, Poland.
Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Łódź 90-924, Poland.
Molecules. 2017 Sep 27;22(10):1620. doi: 10.3390/molecules22101620.
Previous studies on nonwovens used for respiratory protective devices (RPDs) were related to equipment intended for short-term use. There is only limited research on the development of biocidal nonwoven fabrics for reusable RPDs that could be used safely in an industrial work environment where there is a risk of microbial growth. Moreover, a new group of biocides with high antimicrobial activity-gemini surfactants, has never been explored for textile's application in previous studies. The aim of this study was to develop high-efficiency melt-blown nonwovens containing gemini surfactants with time-dependent biocidal activity, and to validate their antimicrobial properties under conditions simulating their use at a plant biomass-processing unit. A set of porous biocidal structures (SPBS) was prepared and applied to the melt-blown polypropylene (PP) nonwovens. The biocidal properties of the structures were triggered by humidity and had different activation rates. Scanning electron microscopy was used to undertake structural studies of the modified PP/SPBS nonwovens. In addition, simulation of plant biomass dust deposition on the nonwovens was performed. The biocidal activity of PP/SPBS nonwovens was evaluated following incubation with and from the American Type Culture Collection, and with and isolated from the biomass. PP/SPBS nonwovens exhibited antimicrobial activity to varying levels. Higher antimicrobial activity was noted for bacteria (R = 87.85-97.46%) and lower for moulds (R = 80.11-94.53%).
先前关于用于呼吸防护设备（RPD）的非织造布的研究与旨在短期使用的设备有关。对于可重复使用的 RPD 用的杀菌非织造布的开发研究很少，这些 RPD 可在存在微生物生长风险的工业工作环境中安全使用。此外，在以前的研究中，从未有研究将具有高抗菌活性的新型杀生物剂-双子表面活性剂用于纺织品。本研究的目的是开发具有时间依赖性杀菌活性的含有双子表面活性剂的高效熔喷非织造布，并验证其在模拟生物质加工装置使用条件下的抗菌性能。制备了一组多孔杀菌结构（SPBS）并将其应用于熔喷聚丙烯（PP）非织造布。结构的杀菌性能由湿度触发，具有不同的激活率。使用扫描电子显微镜对改性 PP/SPBS 非织造布进行了结构研究。此外，还模拟了生物质灰尘在非织造布上的沉积。用从美国典型培养物保藏中心获得的 和 以及从生物质中分离得到的 和 对 PP/SPBS 非织造布进行了孵育，评估了其杀菌活性。PP/SPBS 非织造布表现出不同程度的抗菌活性。对细菌的抗菌活性更高（R = 87.85-97.46％），对霉菌的抗菌活性较低（R = 80.11-94.53％）。
