Nanoparticle morphology and film-forming behavior of polyacrylate/ZnO nanocomposite
Nanoparticle morphology and film-forming behavior of polyacrylate/ZnO nanocomposite
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聚丙烯酸酯/ZnO纳米复合材料的纳米颗粒形貌及成膜行为
DOI：
10.1016/j.compscitech.2014.02.019
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发表时间：
2014-06-27
影响因子：
9.1
通讯作者：
Zhang, Limin
中科院分区：
文献类型：
--
作者：
Liu, Junli;Ma, Jianzhong;Zhang, Limin
以丙烯酸酯单体为单体，在ZnO纳米结构存在下，通过原位乳液聚合制备了聚丙烯酸酯/ZnO纳米复合材料成膜剂，ZnO纳米结构具有球形、棒状、片状、针状和花状等多种形貌。透射电子显微镜（TEM），扫描电子显微镜（SEM）和能量色散谱（EDS）被用来量化的纳米复合材料，从而获得。采用核磁共振（NMR）技术研究了聚丙烯酸酯/ZnO纳米复合材料中的分子间相互作用。研究了不同形貌的ZnO纳米结构对抗菌性能、透湿性和力学性能的影响。ZnO纳米粒子在聚丙烯酸酯基体中分散良好。花状ZnO纳米颗粒与聚合物链之间的相互作用较弱，而含有花状或球形ZnO的纳米颗粒对黄曲霉和白色念珠菌的抗菌作用均有所改善。花状ZnO纳米粒子的加入使聚丙烯酸酯/ZnO纳米复合材料的透湿性能提高了122.17%。相比之下，球形ZnO有利于提高力学性能。(C)2014爱思唯尔有限公司版权所有。
Film-forming agents of polyacrylate/ZnO nanocomposite are formed by in situ emulsion polymerization of acrylate monomers in the presence of ZnO nanostructures with various morphologies including sphere-like, rod-like, sheet-like, needle-like and flower-like. Transmission electron microscopy (TEM), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) were used to quantify the nanocomposites thus obtained. Nuclear magnetic resonance (NMR) was employed to investigate the intermolecular interactions in the polyacrylate/ZnO nanocomposites. The impact of ZnO nanostructures with various morphologies on the antibacterial behavior, water vapor permeability and mechanical properties is established. ZnO nanoparticles are well dispersed in polyacrylate matrix. Flower-like ZnO nanoparticles exhibit weak interactions with the polymer chains, while those containing flower-like or sphere-like ZnO show improved antibacterial effects against both aspergillus flavus and candida albicans. Water vapor permeability of polyacrylate/ZnO nanocomposites were increased by 122.17% with the addition of the flower-like ZnO nanoparticles. In comparison, sphere-like ZnO is favorable for improving the mechanical behavior. (C) 2014 Elsevier Ltd. All rights reserved.