制备及富纳米棒氧化锌的纳米复合材料薄膜的特性研究。
Preparation and characterization of bionanocomposite films filled with nanorod-rich zinc oxide.
机构信息
Food Biopolymer Research Group, Food Science and Technology Department, Damghan Branch, Islamic Azad University, Damghan, Semanan, Iran.
出版信息
Carbohydr Polym. 2013 Jul 1;96(1):233-9. doi: 10.1016/j.carbpol.2013.03.055. Epub 2013 Mar 23.
The effects of zinc oxide nanorods (ZnO-nr) incorporation on the physical, mechanical, heat sealability, barrier, thermal and antibacterial properties of sago starch and bovine gelatin bionanocomposites films were investigated. The ZnO was incorporated into the films at different concentrations (1-5%, w/w total solid). All films were plasticized with 40% (w/w of total solid) of a combination of sorbitol/glycerol at 3:1 ratio. Incorporation of 5% of ZnO-nr to starch and gelatin films decreased the permeability to oxygen by 40% and 55%, respectively. Moisture content and water absorption capacity of the films were decreased by increasing the ZnO-nr contents. Mechanical and heat seal properties of the films were increased more than 20%. The films exhibited UV absorption and displayed an excellent antimicrobial activity against the Escherichia coli. These properties suggest that bionanocomposites based on ZnO-nr have the potential as an active packaging material for food and pharmaceutical industries.
研究了氧化锌纳米棒（ZnO-nr）的加入对西米淀粉和牛明胶生物纳米复合材料薄膜的物理、机械、热封合性、阻隔性、热学和抗菌性能的影响。将 ZnO 以不同浓度（1-5%，总固体质量分数）加入到薄膜中。所有薄膜均用 40%（总固体质量分数）的山梨糖醇/甘油（3:1 比例）进行增塑。将 5%的 ZnO-nr 掺入淀粉和明胶薄膜中，可使氧气透过率分别降低 40%和 55%。随着 ZnO-nr 含量的增加，薄膜的水分含量和吸水率降低。薄膜的机械和热封合性能提高了 20%以上。该薄膜具有紫外吸收性能，并对大肠杆菌表现出优异的抗菌活性。这些性能表明，基于 ZnO-nr 的生物纳米复合材料有望成为食品和制药行业的活性包装材料。
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