Transparent nanocellulose hybrid films functionalized with ZnO nanostructures for UV-blocking
Transparent nanocellulose hybrid films functionalized with ZnO nanostructures for UV-blocking
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DOI：
10.1039/c5tc00812c
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发表时间：
2015-01-01
影响因子：
6.4
通讯作者：
Shi, Liyi
中科院分区：
文献类型：
--
作者：
Jiang, Yaoquan;Song, Yuanyuan;Shi, Liyi
使用 NC 原纤维和片状 ZnO (s-ZnO) 或带状 ZnO (b-ZnO) 纳米结构，通过压力控制挤出工艺制备透明的纳米纤维素-ZnO (NC-ZnO) 杂化薄膜。 s-ZnO 和 b-ZnO 与 NC 原纤维结合形成异质纤维网络结构。具有不同含量ZnO纳米结构的NC-ZnO杂化薄膜表现出高光学透明度和优异的紫外线阻挡的协同特征。结果表明，与 NC-b-ZnO 相比，用 s-ZnO 杂化膜组装的 NC 在 200 至 375 nm 范围内具有优异的紫外线阻挡能力。此外，透明NC-ZnO杂化薄膜出色的热稳定性和光稳定性增强了多种生物应用的可扩展性和易用性，这些应用需要耐受温度变化。
Transparent, nanocellulose-ZnO (NC-ZnO) hybrid films were fabricated via a pressure controlled extrusion process using NC fibrils and sheet-like ZnO (s-ZnO) or belt-like ZnO (b-ZnO) nanostructures. The s-ZnO and b-ZnO conjoined with the NC fibrils to form a heterogeneous, fibrous network structure. The NC-ZnO hybrid films with different amounts of ZnO nanostructures showed a synergic feature of high optical transparency and excellent UV-blocking. The results indicated that NC assembled with s-ZnO hybrid film possessed excellent UV-blocking ability in a wide range from 200 to 375 nm, in contrast to NC-b-ZnO. Moreover, the prominent thermal and photo stability of transparent NC-ZnO hybrid films enhanced extensibility and ease of use for diverse biological applications, which require tolerance of temperature changes.