Construction of chitosan/ZnO nanocomposite film by in situ precipitation
Construction of chitosan/ZnO nanocomposite film by in situ precipitation
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原位沉淀法构建壳聚糖/ZnO纳米复合膜
DOI：
10.1016/j.ijbiomac.2018.10.084
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发表时间：
2019-02-01
影响因子：
8.2
通讯作者：
Zhou, Pang-hu
中科院分区：
文献类型：
--
作者：
Qiu, Bo;Xu, Xiong-feng;Zhou, Pang-hu
本文采用一种绿色、简便的方法，通过在壳聚糖膜中原位沉淀纳米ZnO（nZnO），制备了具有柔性的壳聚糖/ZnO纳米复合膜。在壳聚糖溶液中加入Zn（Ac）（2）提供Zn 2+，使Zn 2+固定在壳聚糖基质中，并通过加热与NaOH作用转化为nZnO。采用场发射扫描电子显微镜（FESEM）、原子力显微镜（AFM）、傅立叶红外光谱（FT-IR）、X射线衍射（XRD）和拉伸测试等手段对杂化膜的结构和性能进行了表征。结果表明，Zn 2+与壳聚糖基体之间存在较强的配位作用，使nZnO在壳聚糖膜中具有良好的分散性。纳米ZnO在壳聚糖中均匀分布，并聚集形成微纳二元分级结构，模仿荷叶结构。因此，本研究为制备具有生物相容性和抗菌性的壳聚糖/ZnO纳米复合膜提供了一种有效途径，在抗菌包装和敷料领域具有潜在的应用前景。(C)2018由Elsevier B. V.出版
In the present work, flexible chitosan/ZnO nanocomposite films were prepared by a green and facile method through in situ precipitation of nano-ZnO (nZnO) in the chitosan film. Zn(Ac)(2) was added in chitosan solution to provide Zn2+, thus Zn2+ was fixed in the chitosan matrix and converted into nZnO through interaction with NaOH with heating. The structure and properties of the hybrid films were characterized by Field emission scanning electron microscope (FESEM), atomic force microscope (AFM), Fourier transform infra-red (FT-IR), X-ray diffraction (XRD) and tensile testing. The results indicated that there was strong coordination interaction existed between Zn2+ and chitosan matrix for the good dispersion of nZnO in the chitosan film. Furthermore, nZnO distributed evenly in the chitosan and aggregated to form micro-nano-binary hierarchical structure, mimicking lotus leaf structure. Therefore, this work provides an effective way to prepare biocompatible and antibacterial chitosan/ZnO nanocomposite films, showing potential applications in the fields of antibacterial packaging and dressings. (C) 2018 Published by Elsevier B.V.