Jayaramudu Tippabattini, Varaprasad Kokkarachedu, Raghavendra Gownolla Malegowd, Sadiku E R, Mohana Raju Konduru, Amalraj John
a Department of Mechanical Engineering, Center for NanoCellulose Future Composites , Inha University , Incheon , South Korea.
b Synthetic Polymer Laboratory, Department of Polymer Science & Technology , Sri Krishnadevaraya University , Anantapuram , India.
J Biomater Sci Polym Ed. 2017 Oct;28(14):1588-1602. doi: 10.1080/09205063.2017.1338501. Epub 2017 Jun 22.
In this report, we investigated the swelling behavior and antibacterial property of nanosilver composite hydrogels made from tea with polyacrylamide via a free-radical polymerization and green process technique. This is probably for the first time; tea-based nano silver composite hydrogels were developed. The composite hydrogels comprise embedded nano silver particles in the tea hydrogel matrix via a green process with mint leaf extract. The size of the nano silver particles in the hydrogel matrix was found to be < 10 nm. The nano silver composite hydrogels formed and their blank hydrogels from the mint leaf were characterized by using ultraviolet-visible spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, transmission electron microscopy, thermogravimetric analysis and X-ray diffraction studies. The nano silver composite hydrogels developed exhibit eminent antibacterial activity against Escherichia coli and Staphylococcus aureus. This clearly indicates that the nano silver composite hydrogels are potential candidates for antimicrobial applications.
在本报告中，我们通过自由基聚合和绿色工艺技术研究了由茶与聚丙烯酰胺制成的纳米银复合水凝胶的溶胀行为和抗菌性能。这可能是首次开发出基于茶的纳米银复合水凝胶。复合水凝胶通过薄荷叶提取物的绿色工艺在茶水凝胶基质中包含嵌入的纳米银颗粒。发现水凝胶基质中纳米银颗粒的尺寸小于10纳米。使用紫外可见光谱、带能谱的扫描电子显微镜、透射电子显微镜、热重分析和X射线衍射研究对形成的纳米银复合水凝胶及其来自薄荷叶的空白水凝胶进行了表征。所开发的纳米银复合水凝胶对大肠杆菌和金黄色葡萄球菌表现出显著的抗菌活性。这清楚地表明纳米银复合水凝胶是抗菌应用的潜在候选材料。
