聚多巴胺作为多功能粘合剂层，可牢固地制造智能表面，并具有可切换的润湿性，以实现有效的油/水分离,Industrial & Engineering Chemistry Research

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聚多巴胺作为多功能粘合剂层，可牢固地制造智能表面，并具有可切换的润湿性，以实现有效的油/水分离
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2019-03-12 , DOI: 10.1021/acs.iecr.8b06408
Chisiang Ong ₁ , Yusuf Shi ₁ , Jian Chang ₁ , Fadhilah Alduraiei _{1,

2} , Zeyad Ahmed ₃ , Peng Wang ₁

Affiliation

对于可用于从含油废水中去除油的实际应用，非常需要一种具有可切换表面润湿性的智能材料。在这项工作中，我们开发了一种强大而简单的方法来功能化各种基材，例如三聚氰胺海绵和无纺布，并在不同pH值的不同介质上具有可切换的表面油润湿性。改性方法包括在材料表面上多巴胺的氧化自聚合，然后用嵌段共聚物，即聚（2-乙烯基吡啶-b-二甲基硅氧烷）（P2VP- b）进行官能化。-PDMS）。功能化材料显示出稳定且连续的可切换润湿性。这些材料仅通过响应水溶液的pH值即可改变其润湿性，并且这种切换是在室温下完成的，并且不涉及有机溶剂。该材料对不同种类的油显示出优异的油/水分离性能，并在强碱性和腐蚀性溶液中显示出耐用性。这种强大而简单的化学改性策略降低了可切换润湿性的智能材料的生产成本，因此将导致其大规模生产和应用，以解决实际的工业问题。

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Polydopamine as a Versatile Adhesive Layer for Robust Fabrication of Smart Surface with Switchable Wettability for Effective Oil/Water Separation

A smart material with switchable surface wettability is highly desired for the practical application in removing oil from oily wastewater. In this work, we developed a robust and simple method to functionalize various substrate materials, such as a melamine sponge and nonwoven textile, with switchable surface oil wettability at varied media with different pHs. The modification method involves oxidative self-polymerization of dopamine on the material surface and subsequently functionalizing with a block copolymer, namely poly(2-vinylpyridine-b-dimethylsiloxane) (P2VP-b-PDMS). The as-functionalized materials display stable and continuous switchable wettability. The materials switch their wettability by simply responding to aqueous pH, and the switch is achieved at room temperature and involves no organic solvent. The materials show excellent oil/water separation performance for different kinds of oils and exhibit durability in strong alkaline and corrosive solutions. This robust and simple chemical modification strategy reduces the production cost of smart materials with switchable wettability and thus would lead to their mass production and applications toward solving practical industrial problems.

更新日期：2019-03-13

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