High barrier plastics using nanoscale inorganic films
High barrier plastics using nanoscale inorganic films
复制标题
使用纳米级无机薄膜的高阻隔塑料
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
C. Batista
中科院分区：
文献类型：
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作者：
V. Teixeira;J. Carneiro;P. Carvalho;E. Silva;S. J. Azevedo;C. Batista
摘要：食品容器的包装材料需要满足极其严格的标准，以保持包装产品的保鲜品质。尽管聚合物通常被首选用于包装系统的生产，但其对气体、水蒸气和气味的渗透性仍然令人担忧。从这个意义上说，利用纳米效应的新方法正在开发中，以设计、创建或模拟具有显著优化性能的气体阻隔纳米涂层。人们普遍认为，沉积的无机材料的最终阻隔性能与力学和形态性能有很强的耦合。基本上，一个好的屏障系统应该具有致密的形态，没有裂缝，与衬底的附着力好，应力低，厚度均匀，可重复性。目前，研究人员的目标是开发具有成本效益的大规模生产技术。
Abstract: Packaging materials for food containers need to fulfil extremely tight standards towards the fresh-like quality maintenance of packed products. Even though polymers are normally preferred for the production of packaging systems, their permeability to gases, water vapour and odours remains a concern. In this sense, new approaches using nanoscale effects are under development to design, create or model gas-barrier nanocoatings with significantly optimized properties. It is generally agreed that the final barrier performances of the deposited inorganic materials are strongly coupled with mechanical and morphological properties. Basically, a good barrier system should have a dense morphology without cracks, good adhesion to the substrate, low stress, uniform thickness and reproducibility. At the moment, researchers aim for development of cost effective mass production techniques.