Preparation and performance study of environmentally friendly and durable kaolin/PDMS/cotton fabrics superhydrophobic surface

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-05-15 DOI:10.15251/djnb.2024.192.751

K. Hou, Y. W. Meng, D. Q. Liu, X. D. Zhu, Y. B. Yun

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Abstract

In this research work, a fluorine-free, durable, and excellent self-cleaning and oil-water separation performance kaolin/polydimethylsiloxane/cotton fabrics (Kaolin/PDMS/cotton) superhydrophobic surface was successfully prepared. The morphology, wettability, and phase composition of the coating were characterized and tested using scanning electron microscopy (SEM), dynamic contact angle measuring instrument, and X-ray diffraction (XRD). The experimental results showed that the organic composite of hydrophobic modified kaolin particles and cotton fabrics was successfully achieved through the bridging effect of PDMS. A dense superhydrophobic micro-nano structure coating was constructed on the surface of cotton fibers, and the tested performance was excellent. Has good local anti-pollution performance for common coffee, Coca-Cola, dyeing water, and simulated dust; After being worn for a distance of 1200 centimeters under a load of 10KPa, the contact angle with water remained above 150°, indicating excellent durability of the coating; In addition, kaolin/PDMS/cotton also exhibited good oil/water separation performance. After 15 cycles of oil-water separation tests, the separation efficiency for gasoline and dichloromethane both exceeded 96%.

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环保耐用型高岭土/PDMS/棉织物超疏水表面的制备与性能研究

在这项研究工作中，成功制备了一种无氟、耐久、自洁和油水分离性能优异的高岭土/聚二甲基硅氧烷/棉织物（高岭土/PDMS/棉）超疏水性表面。利用扫描电子显微镜（SEM）、动态接触角测量仪和 X 射线衍射（XRD）对涂层的形貌、润湿性和相组成进行了表征和测试。实验结果表明，通过 PDMS 的架桥效应，成功实现了疏水性改性高岭土颗粒与棉织物的有机复合。在棉纤维表面构建了致密的超疏水微纳结构涂层，测试性能优异。对普通咖啡、可口可乐、染色水和模拟灰尘具有良好的局部抗污染性能；在 10KPa 负荷下穿戴 1200 厘米后，与水的接触角仍保持在 150°以上，表明涂层具有良好的耐久性；此外，高岭土/PDMS/棉还具有良好的油水分离性能。经过 15 次油水分离测试，汽油和二氯甲烷的分离效率均超过 96%。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.