The development of environmental-friendly antibacterial agents with high efficiency and low cost has become the focus of attention. In this work, the Ag nanoparticles doped into chitosan (Ag NPs-CS) were synthesized by a green and facile method, and the samples were characterized by UV–Vis spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA). The antibacterial tests implied that Ag NPs-CS obtained from glucose (G-Ag NPs-CS) exhibited the excellent antimicrobial activities against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) microbes. Besides, the utilization of antibacterial agents in polymeric materials plays an significant role in healthy living. The aim is to impart the antibacterial properties and maintain/improve the mechanical properties. Therefore, the G-Ag NPs-CS with 5 wt% Ag was chosen as the optimal additive to endow polypropylene with antimicrobial activity via a simple melt blending method. The results demonstrated that the suppression of bacteria proliferation was enhanced with increasing the amount of antibacterial agent, and the microorganisms were almost killed when the content reached to 8 wt%. Meanwhile, the considerable improvement in elastic modulus and impact strength along with a slight decrease of elongation at break provided the evidence that Ag NPs-CS/PP nanocomposites were the promising candidate for practical applications.

高效，低成本的环保型抗菌剂的开发成为关注的焦点。在这项工作中，通过绿色简便的方法合成了掺入壳聚糖的Ag纳米颗粒（Ag NPs-CS），并通过UV-Vis光谱，扫描电子显微镜（SEM），透射电子显微镜（TEM）对样品进行了表征， X射线衍射（XRD），傅立叶变换红外光谱（FTIR）和热重分析（TGA）。抗菌测试表明，从葡萄糖（G-Ag NPs-CS）获得的Ag NPs-CS对革兰氏阴性菌（Escherichia coli）和革兰氏阳性菌（Ataphylococcus aureus）表现出优异的抗菌活性。）微生物。此外，在高分子材料中使用抗菌剂对健康生活也起着重要作用。目的是赋予抗菌性能并保持/改善机械性能。因此，通过简单的熔融共混方法，选择了具有5 wt％Ag的G-Ag NPs-CS作为赋予聚丙烯抗微生物活性的最佳添加剂。结果表明，随着抗菌剂用量的增加，对细菌增殖的抑制作用增强，当含量达到8 wt％时，微生物几乎被杀死。同时，弹性模量和冲击强度的显着提高以及断裂伸长率的轻微降低提供了证据，表明Ag NPs-CS / PP纳米复合材料是有希望的实际应用候选材料。