In the current study, poly(vinyl alcohol) (PVA)/titanium dioxide (TiO₂)-based nanocomposite films were prepared using the solution-blending and solvent-evaporation techniques. The tensile properties and phase morphology of the prepared PVA/titanium dioxide nanocomposite films were investigated using universal testing machine (UTM) tests and scanning electron microscopy, respectively. Further, the water contact angles and antifungal activities of the composite films and their interactions were evaluated by using Fourier transform infrared spectroscopy (FTIR). The results of UTM tests revealed that the mechanical properties increased up to a proportion of 6% titanium dioxide nanoparticles. The addition of titanium dioxide nanoparticles to the PVA matrix resulted in smooth and homogeneous phase morphology except for the PVA matrix with 4% brahmi plant extract titanium dioxide nanoparticles. The water contact angle and antimicrobial activity confirmed that the hydrophilic nature slightly increased, and antifungal activity showed a significant rise in the composite films. Intermolecular interactions through hydrogen bonding between the composite films were confirmed by the FTIR study. The results of a packaging study clearly suggest that the composite films have good storage properties and they can be used as environment-friendly materials with slight modifications. The prepared films can find potential applications in food packaging for storage of foodstuffs.

中文翻译：

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环保型PVA / TiO2基纳米复合材料的设计及其抗真菌活性的研究

在当前的研究中，聚乙烯醇（PVA）/二氧化钛（TiO ₂溶液混合和溶剂蒸发技术制备了基于）的纳米复合薄膜。分别用通用试验机（UTM）和扫描电子显微镜研究了制备的PVA /二氧化钛纳米复合薄膜的拉伸性能和相形态。此外，通过使用傅立叶变换红外光谱法（FTIR）评价了复合膜的水接触角和抗真菌活性及其相互作用。UTM测试的结果表明，机械性能增加了高达6％的二氧化钛纳米颗粒。将二氧化钛纳米颗粒添加到PVA基质中可得到平滑且均匀的相形态，除了含4％婆罗米植物提取物的二氧化钛纳米颗粒的PVA基质。水接触角和抗菌活性证实了亲水性略有增加，并且复合材料薄膜中的抗真菌活性显着提高。FTIR研究证实了复合膜之间通过氢键形成的分子间相互作用。包装研究的结果清楚地表明，该复合膜具有良好的储存性能，可以稍作改动就可以用作环保材料。制备的薄膜可以在食品包装中用于食品的存储中找到潜在的应用。包装研究的结果清楚地表明，该复合膜具有良好的储存性能，可以稍作改动就可以用作环保材料。制备的薄膜可以在食品包装中用于食品的存储中找到潜在的应用。包装研究的结果清楚地表明，该复合膜具有良好的储存性能，可以稍作改动就可以用作环保材料。所制备的薄膜可以在食品包装中用于存储食品的潜在应用。