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首页> 外文期刊>Journal of Polymers and the Environment >Titania-Containing Recycled Polypropylene Surfaces with Photo-Induced Reversible Switching Wettability
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Titania-Containing Recycled Polypropylene Surfaces with Photo-Induced Reversible Switching Wettability

机译：光诱导可逆转换润湿性的含二氧化钛的再生聚丙烯表面

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摘要

Creation of smart surfaces with reversible wettability has always fascinated researchers over the past years but complicated methods are still employed. This study reports a facile and environment-friendly fabrication of smart composite coatings from recycled polypropylene (PP) plastics in which titanium dioxide or titania particles are added to impart extreme anti-wettability with improved thermal stability. The method used is simple and economical as the utilization of used PP plastics can positively impact to the volume reduction of plastic waste in the environment. Titania, being photo-responsive, makes the wetting behavior switch reversibly (i.e. from being superhydrophobic to hydrophilic and vice versa) by employing ultraviolet light as a stimulus and storage in the dark for superhydrophobicity restoration. Combined with relatively high thermal stability, the PP/TiO2 composites are thought to be useful not only as smart coatings but also for a wide variety of barrier-related applications.
机译：在过去的几年中，具有可逆润湿性的智能表面的创建一直使研究人员着迷，但仍采用复杂的方法。这项研究报告了一种利用回收的聚丙烯（PP）塑料轻松智能地制造智能复合涂层的方法，其中添加了二氧化钛或二氧化钛颗粒以赋予极高的​​抗湿性并改善了热稳定性。使用的方法简单且经济，因为使用废旧的PP塑料可以对减少环境中塑料废物的体积产生积极影响。二氧化钛具有光敏性，它通过利用紫外线作为刺激并在黑暗中储存以恢复超疏水性，使润湿行为可逆地转换（即从超疏水性转变为亲水性，反之亦然）。与相对较高的热稳定性相结合，PP / TiO2复合材料不仅可用作智能涂料，而且还可用于与屏障相关的各种应用。

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