Abstract

Plasma technology offers an appealing approach for the surface modification of materials such as textiles. In this study, an atmospheric pressure plasma jet system was used to successfully deposit silver nanoparticles on polyester textile substrates to impart antibacterial properties. The plasma was generated by applying a constant potential of 15 kV to silver electrodes while argon and oxygen gases were allowed to flow at 15 and 5 LPM, respectively. The optical emission spectra of the generated plasma revealed the presence of argon, oxygen, and silver species. The combination of operating parameters employed in the study led to the successful deposition and adhesion of silver nanoparticles without changing the bulk properties of the material. The deposited silver nanoparticles were verified using a scanning electron microscope analysis which showed an expected increase in particle density at longer plasma exposure time. Qualitative and quantitative antibacterial assays proved the efficiency of the plasma-treated textile samples in inhibiting the growth of the Gram- negative Escherichia coli and the Gram-positive Staphylococcus aureus bacteria. The antibacterial efficiency of the treated samples proportionally increased with longer plasma treatment time. The approach used in this study successfully produced surface-immobilized silver nanoparticles polyester textile with potential application as antibacterial fabrics.

摘要

等离子技术为纺织品等材料的表面改性提供了一种有吸引力的方法。在这项研究中，使用大气压等离子喷射系统成功地将银纳米粒子沉积在聚酯纺织基材上，以赋予抗菌性能。通过向银电极施加 15 kV 的恒定电位产生等离子体，同时允许氩气和氧气分别以 15 和 5 LPM 流动。产生的等离子体的光发射光谱显示存在氩、氧和银物质。研究中使用的操作参数的组合导致银纳米粒子的成功沉积和粘附，而不会改变材料的整体性质。使用扫描电子显微镜分析验证沉积的银纳米粒子，该分析显示在较长的等离子体暴露时间下粒子密度的预期增加。定性和定量抗菌试验证明了经等离子体处理的纺织品样品在抑制革兰氏阴性菌生长方面的效率大肠杆菌和革兰氏阳性金黄色葡萄球菌。处理过的样品的抗菌效率随着等离子体处理时间的延长而成比例地增加。本研究中使用的方法成功地生产了表面固定的银纳米粒子聚酯纺织品，具有作为抗菌织物的潜在应用。