Abstract The method of biocidal plastics preparation has been described. The two types of N-halamine additives have been mixed (0.5–2 wt%) with plasticized PVC and processed by dry-blend extrusion and injection molding. The biocidal efficacy of modified PVC has been tested against two strains of bacteria: Escherichia coli and Staphylococcus aureus; and against yeast—Candida albicans. It was found that even small amount (0.5 wt%) of biocidal component yields to efficient biocidal activity of the whole plastic. The mechanical properties, hardness, abrasion, mass flow rate indicators, and flammability of obtained biocidal materials have been investigated. The examined mechanical properties of PVC were improved or remained almost unchanged after modification. For example, there has been maximum a 7% decrease in σM value for modified materials, where the average measurement error was 4%. Similarly, in the case of hardness, in comparison to initial PVC, the variations of this parameter are about 2 ShA. The values of abrasion resistance indexes were in the range from 3.07 mm3/m (PVC) to 4.77 mm3/m. However, the MFR values for obtained biocidal plastics were two times smaller. The increase of resistance to flame was observed. The LOI of PVC was 32% and for biocidal plastic even 41%. Graphical Abstract

中文翻译：

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N-卤胺添加剂对聚氯乙烯生物杀灭塑料力学性能和阻燃性能的影响

摘要 描述了生物杀灭塑料的制备方法。这两种类型的 N-卤胺添加剂已与增塑 PVC 混合（0.5-2 重量％），并通过干混挤出和注塑成型加工。改性 PVC 的杀菌功效已针对两种细菌进行了测试：大肠杆菌和金黄色葡萄球菌；和对抗酵母——白色念珠菌。发现即使是少量（0.5 重量%）的杀生物组分也会产生整个塑料的有效杀生物活性。研究了获得的杀生物材料的机械性能、硬度、磨损、质量流量指标和可燃性。经检测，PVC 的机械性能在改性后有所改善或几乎保持不变。例如，改性材料的 σM 值最多下降了 7%，其中平均测量误差为 4%。同样，在硬度的情况下，与初始 PVC 相比，该参数的变化约为 2 ShA。耐磨指数值在 3.07 mm3/m (PVC) 至 4.77 mm3/m 的范围内。然而，获得的杀生物塑料的 MFR 值要小两倍。观察到耐火性增加。PVC 的 LOI 为 32%，而生物杀灭塑料的 LOI 甚至为 41%。图形概要 PVC 的 LOI 为 32%，而生物杀灭塑料的 LOI 甚至为 41%。图形概要 PVC 的 LOI 为 32%，而生物杀灭塑料的 LOI 甚至为 41%。图形概要