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首页> 外文期刊>Polymers for advanced technologies >TiO2 nanoparticles/poly(butylene adipate-co-terephthalate) bionanocomposite films for packaging applications
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TiO2 nanoparticles/poly(butylene adipate-co-terephthalate) bionanocomposite films for packaging applications

机译：TiO2纳米颗粒/聚（丁烯己二酸丁二醇酯）均脱硫复合薄膜用于包装应用

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In this present study, biodegradable PBAT nanocomposites containing different weight percentages (1, 3, 5, 7, and 10% w/w) of TiO2 nanoparticles were prepared by using solvent casting technique, chloroform as a solvent. The microstructure and morphology of the as-synthesized poly(butylene adipate-co-terephthalate) (PBAT)/TiO2 nanocomposite films were characterized by Fourier-transform infrared, X-ray diffraction, scanning electron microscopy, and transmission electron microscope. The thermal degradation of PBAT composites was studied by using thermogravimetric analysis. The mechanical strength of the films was improved by increasing TiO2 concentration. Tensile strength increased from 32.60 to 63.26MPa, respectively. Barrier properties of the PBAT/TiO2 nanocomposites were investigated by using an oxygen permeability tester. The oxygen permeability (oxygen transmission rate) decreased with increasing the TiO2 nanoparticle concentrations. The PBAT/TiO2 nanocomposite films showed profound antimicrobial activity against both Gram-positive and Gram-negative foodborne pathogenic bacteria, namely, Escherichia coli and Staphylococcus aureus, to understand to the zone of inhibition. These results indicated that filler-polymer interaction is important and the role of the TiO2 as a reinforcement in the nanocomposites was evident. Copyright (c) 2017 John Wiley & Sons, Ltd.
机译：在本研究中，采用溶剂浇铸技术，以氯仿为溶剂，制备了含有不同重量百分比（1、3、5、7和10%w/w）TiO2纳米颗粒的可生物降解PBAT纳米复合材料。采用傅里叶变换红外光谱、X射线衍射、扫描电子显微镜和透射电子显微镜对合成的聚己二酸丁二醇酯-对苯二甲酸乙二醇酯（PBAT）/TiO2纳米复合薄膜的微观结构和形貌进行了表征。采用热重分析法研究了PBAT复合材料的热降解。薄膜的机械强度随着TiO2浓度的增加而提高。拉伸强度分别从32.60 MPa提高到63.26MPa。利用透氧测试仪研究了PBAT/TiO2纳米复合材料的阻隔性能。随着TiO2纳米颗粒浓度的增加，透氧性（透氧率）降低。PBAT/TiO2纳米复合膜对革兰氏阳性和革兰氏阴性食源性致病菌（即大肠杆菌和金黄色葡萄球菌）均表现出强烈的抗菌活性，以了解其抑制区域。这些结果表明，填料-聚合物相互作用很重要，TiO2在纳米复合材料中作为增强材料的作用很明显。版权所有（c）2017约翰威利父子有限公司。

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