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首页> 外文期刊>Journal of Applied Polymer Science >PANI-chitosan-TiO2 ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating
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PANI-chitosan-TiO2 ternary nanocomposite and its effectiveness on antibacterial and antistatic behavior of epoxy coating

机译：Pani-Chitosan-TiO2三元纳米复合物及其对环氧涂层抗菌和抗静电行为的有效性

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摘要

A straightforward approach has been developed for fabricating antibacterial and antistatic epoxy coatings by using polyaniline-chitosan modified TiO2 ternary nanocomposite. This nanocomposite was synthesized through the following steps. First, chitosan was grafted onto the TiO2 nanoparticles and then final nanocomposite was prepared via solution polymerization of aniline. Electrical conductivity measurement revealed that nanocomposite with 7.5 wt % of the modified TiO2 nanoparticles has noticeably higher conductivity compared to polyaniline. Evaluating the coatings' antibacterial property indicated epoxy coatings with the content of ternary nanocomposite show significant bactericidal activity against Gram-positive bacteria and have acceptable antibacterial action against Gram-negative ones. Also, obtained results showed that the ternary nanocomposite would greatly decrease coatings' surface resistivity and when nanocomposite content is about 2 wt % surface resistivity is about 3 x 10(7) omega sq(-1). On the contrary, the coating with nanocomposite loading exhibits improved thermal and mechanical performance compared to the coating made of neat epoxy. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47629.
机译：已经开发了一种直接的方法，用于通过使用聚苯胺 - 壳聚糖改性TiO2三元纳米复合材料来制造抗菌和抗静电环氧树脂涂层。通过以下步骤合成该纳米复合物。首先，将壳聚糖接枝到TiO 2纳米颗粒上，然后通过苯胺的溶液聚合制备最终纳米复合材料。导电性测量显示，与聚苯胺相比，具有7.5wt％的改性TiO2纳米颗粒的纳米复合材料具有明显较高的导电性。评估涂层的抗菌性质表明具有三元纳米复合材料的含量的环氧涂层显示出对革兰氏阳性细菌的显着杀菌活性，并具有对革兰氏阴性阴性的抗菌作用。此外，得到的结果表明，三元纳米复合材料大大降低涂层表面电阻率，并且当纳米复合材料含量约为2wt％表面电阻率时，表面电阻率约为3×10（7）ωSq（-1）。相反，与由整齐的环氧树脂制成的涂层相比，纳米复合材料载荷的涂层表现出改善的热和机械性能。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47629。

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