纤维素纳米晶体(CNCs)由于其优异的机械和生物学性能,最近作为一种潜在的纳米材料受到了极大的关注。这项研究旨在配制由聚乙烯醇(PVA)制成的复合涂层,CNCs,和来自无花果树(Ficusauriculata)的干燥叶子和果实的甲醇提取物(FAE)。获得CNCs的顺序程序包括碱和酸水解,超声处理,和合适的纯化方法。X射线衍射(XRD)等分析技术傅里叶变换红外光谱(FTIR),和扫描电子显微镜(SEM)用于研究CNC加载的薄膜。复合材料的热重分析(TGA)表明,CNC增强膜的热稳定性优于对照,从较高的降解温度可以看出,表明所建议的木材表面涂料的理想的耐环境性。通过协同使用CNCs的组合,白蚁防治变得更加有效,PVA,和FAE具有证明的杀虫特性。检查了复合材料的抗白蚁性和白蚁死亡率,并证明了当一起使用时,CNCs,PVA,和FAE在防止白蚁方面集体和协同更有效。这项研究的结果表明,进化的复合材料可用于开发环境友好且反应良好的抗白蚁产品。合成的复合材料也表现出显著的抗菌活性。在所有电影中,PVA中0.7%提取物的组合显示出优异的结果,对于革兰氏阳性细菌,生长抑制区的直径为26和28毫米,而对于两种阴性细菌菌株为26毫米。研究结果表明,这种复合材料作为一种可持续的,耐环境,以及各种建筑材料和木材保存应用中白蚁/细菌控制的环保替代品。
Cellulose nanocrystals (CNCs) have received immense interest lately as a potential nanomaterial because of their excellent mechanical and biological properties. This investigation aims to formulate a composite coating made of polyvinyl alcohol (PVA), CNCs, and a methanolic extract from the dried leaves and fruit of the fig tree (Ficus auriculata) (FAE). A sequential procedure to get CNCs included alkaline and acid hydrolysis, sonication, and suitable methods for purification. Analytical techniques like X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) were used to study the CNC-loaded films. Thermogravimetric analysis (TGA) of composites revealed superior thermal stability of the CNC-reinforced films versus control, evident from higher degradation temperatures, indicating desirable environmental resistance of proposed coatings for wood surfaces. The termite control was made more effective through synergistic use of a combination of CNCs, PVA, and FAE with proven insecticidal properties. The composite material was examined for its anti-termite resistance and termite mortality rate, and demonstrated that when used together, CNCs, PVA, and FAE were collectively and synergistically more effective at keeping termites away. The findings of this study demonstrate that the evolved composite could be used to develop anti-termite products that are environmentally benign and respond well. Synthesized composites also demonstrated significant antibacterial activity. Among all films, a combination of 0.7 % extract in PVA displayed excellent results with 26 and 28 mm diameter for growth inhibition zone for Gram-positive bacteria whereas 26 mm for both negative bacterial strains. The findings suggest a potential use of this composite as a sustainable, environmentally resistant, and eco-friendly alternative for termite/bacterial control in various building materials and wood preservation applications.