纳米复合材料
材料科学
光催化
极限抗拉强度
铸造
乳酸
热稳定性
二氧化钛
化学工程
溶胶凝胶
纳米颗粒
水解
钛
复合材料
核化学
纳米技术
化学
有机化学
催化作用
细菌
冶金
生物
遗传学
工程类
作者
Shuhong Li,Guiyun Chen,Siqi Qiang,Zhonglin Yin,Zhenya Zhang,Ye Chen
标识
DOI:10.1016/j.ijfoodmicro.2020.108763
摘要
Using titanium teraisopropoxide (TTIP) as the hydrolysis material, titanium dioxide (TiO2) (6.3-11.1 nm) nanoparticles were synthesized via the sol-gel method and reinforced into poly lactic acid (PLA)/TiO2 nanocomposite films by casting. The effect of increasing amounts of TiO2 on the structure and properties of PLA/TiO2 nanocomposite films were evaluated. These results indicated that self-aggregation of TiO2 nanoparticles in PLA films could be avoided via sol-gel and casting processes. The presence of TiO2 significantly improved the tensile strength and thermal stability of films. The PLA/TiO2 (0.6 wt%) film exhibited the highest photocatalytic activity efficiency under UV irradiation and displayed high antibacterial activities with optimal inhibition zones of Staphylococcus aureus, followed by Escherichia dispersibility of TiO2 in films were responsible for those improvements. This study suggests that PLA/TiO2 nanocomposite films could be a promising antimicrobial alternative material to conventional plastic packages.
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