Enhanced mechanical, thermal, and UV-shielding properties of poly(vinyl alcohol)/metal-organic framework nanocomposites.
Enhanced mechanical, thermal, and UV-shielding properties of poly(vinyl alcohol)/metal-organic framework nanocomposites.
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聚乙烯醇/金属有机骨架纳米复合材料增强的机械、热和紫外线屏蔽性能
DOI：
10.1039/c8ra07143h
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发表时间：
2018-11-14
期刊：
影响因子：
3.9
通讯作者：
Zou, Zhiming
中科院分区：
文献类型：
--
作者：
Dai, Yibo;Tang, Qun;Zhang, Ziang;Yu, Caili;Li, Heping;Xu, Lin;Zhang, Shufen;Zou, Zhiming
成功合成了金属有机骨架纳米粒子（HKUST-1），并采用简单的溶液浇铸法制备了聚乙烯醇（PVA）/HKUST-1纳米复合薄膜。结果表明，HKUST-1的加入使PVA纳米复合材料的热稳定性和力学性能均得到显著提高，这是由于HKUST-1在PVA中的均匀分布以及PVA与HKUST-1之间强的界面相互作用所致。加入2 wt% HKUST-1后，复合材料的降解温度比纯PVA高33 °C。同时，纳米复合材料的杨氏模量和拉伸强度分别比纯PVA高出约137%和32%。此外，PVA/HKUST-1纳米复合材料的紫外屏蔽能力和可见光透过率也有显著提高，表明HKUST-1纳米粒子在复合材料中具有良好的紫外吸收性能。本工作提供了一种新的和简单的方法来生产紫外线屏蔽材料，同时提高热性能和机械性能，这在紫外线防护领域具有潜在的应用。通过简单的溶液浇铸法制备的PVA/HKUST-1纳米复合材料显示出显著增强的热稳定性、机械性能和紫外屏蔽性能。
Metal–organic framework (HKUST-1) nanoparticles were successfully synthesized, and poly(vinyl alcohol) (PVA)/HKUST-1 nanocomposite films were fabricated by a simple solution casting method. Our results showed that the addition of HKUST-1 caused a remarkable enhancement in both thermal stability and mechanical properties of the PVA nanocomposites, due to the homogeneous distribution of HKUST-1 and the strong interfacial interactions between PVA and HKUST-1. With incorporation of 2 wt% HKUST-1, the degradation temperature of the nanocomposites was about 33 °C higher than that of pure PVA. At the same time, the Young's modulus and tensile strength of the nanocomposites was approximately 137% and 32% higher than those of pure PVA, respectively. Moreover, the PVA/HKUST-1 nanocomposites also showed strikingly enhanced UV-shielding ability as well as satisfactory visible light transmittance, which revealed that HKUST-1 nanoparticles could act as a good UV absorber in nanocomposites. This work provides a novel and simple method for producing UV-shielding materials with simultaneously enhanced thermal and mechanical properties, which have potential applications in UV protection areas. PVA/HKUST-1 nanocomposites prepared by a simple solution casting method displayed significantly enhanced thermal stability, mechanical and UV-shielding properties.
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影响因子：
3
作者：
Jiang, Lei;Shen, Xiao-Ping;Shen, Ke-Cheng
通讯作者：
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影响因子：
6.7
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通讯作者：
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