Fabrication of antibacterial casein-based ZnO nanocomposite for flexible coatings

Fabrication of antibacterial casein-based ZnO nanocomposite for flexible coatings
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用于柔性涂层的抗菌酪蛋白基 ZnO 纳米复合材料的制备

DOI:
10.1016/j.matdes.2016.09.082
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发表时间:
2017-01
影响因子:
8.4
通讯作者:
Zhang Jing
Zhang Jing
中科院分区:
材料科学1区
文献类型:
--
作者:
Wang Yanan;Ma Jianzhong;Xu Qunna;Zhang Jing

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采用原位聚合法制备了己内酰胺-酪蛋白/氧化锌柔性杂化纳米复合材料(CCZ)。采用动态光散射(DLS)、透射电镜(TEM)、扫描电镜(SEM)和红外光谱(FT-IR)等手段对复合膜的微观形貌和结构进行了表征,探讨了ZnO用量对复合膜的外观、手感、力学性能和抗菌性能的影响。TEM测量表明,ZnO纳米粒子被困在内层的酪蛋白胶束。SEM观察表明,在成膜过程中,部分ZnO沉积在CCZ薄膜的表面和内部。此外,该薄膜还具有预期的力学性能和对金黄色葡萄球菌和大肠杆菌的抗菌活性.本研究为制备天然高分子基纳米复合抗菌涂料提供了一条可行的途径,该涂料在纺织、皮革、包装、造纸、室内墙面涂料等领域具有广阔的应用前景。
Flexible hybrid caprolactam-casein/ZnO nanocomposite (CCZ) was prepared by in-situ polymerization method. The micro morphology and structure were characterized using DLS, TEM, SEM and FT-IR. The influence of ZnO dosage on the appearance, hand feeling, mechanical property as well as antibacterial activity of as-prepared composite films was explored separately. TEM measurements revealed that ZnO NPs were trapped in the inner layer by casein micelles. SEM indicated that part of ZnO was deposited on both surface and inside of CCZ film in film-forming process. Moreover, the films displayed expected mechanical properties and excellent antibacterial activities againstStaphylococcus aureusandEscherichia coli. This work provided a feasible pathway for fabricating natural polymer-based nanocomposite antibacterial coating which will has great potential use in several fields, such as textile, leather, packaging, paper making and indoor wall coating.
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