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Development of liquid repellent coating on cotton fabric by simple binary silanization with excellent self-cleaning and oil-water separation properties
Carbohydrate Polymers ( IF 10.7 ) Pub Date : 2017-11-15 , DOI: 10.1016/j.carbpol.2017.11.044
Anita Panda , Priya Varshney , Soumya S. Mohapatra , Aditya Kumar

This paper aims to develop a facile and single step method for the fabrication of superhydrophobic coating on cotton fabric. The coating has been prepared by using two silane trichloro(octadecyl)silane and (pentaflurophenyl)triethoxy silane by solution immersion technique. The wettability, surface topography and chemical compostion of the cotton fabric before and after treatment were charecterized by contact angle measurement, scanning electron microscope, and energy dispersive X-ray spectrum, respectively. Additionally, the functional group present in coating was analysed by FT-IR spectra. The coated fabric shows a contact angle of 172.9 ± 3°, 169 ± 3° and 167 ± 3° for water, ethylene glycol and glycerol, respectively. The chemical stability of the coated sample has been evaluated by immersion of the sample in different pH solutions and different solvents, showing the excellent chemical stability of coating. Ultrasonication with water, detergent and petroleum ether, and water jet impact test reveals the mechanical stability of coating. The thermal stability of the coated fabric has been examined by annealing the sample at different temperature. Additionally, it shows resistance to stain and UV irradiation. Furthermore, the coated cotton fabric exhibits excellent self-cleaning and oil-water separation properties, which makes it suitable for industrial applications.



中文翻译:

通过简单的二元硅烷化开发具有优异的自洁性和油水分离性能的棉织物上的拒液涂层

本文旨在开发一种简便,一步法在棉织物上制备超疏水涂层的方法。通过使用溶液浸渍技术使用两种硅烷三氯(十八烷基)硅烷和(五氟苯基)三乙氧基硅烷来制备涂层。通过接触角测量,扫描电子显微镜和能量色散X射线光谱分别表征了棉织物在处理前后的润湿性,表面形貌和化学组成。另外,通过FT-IR光谱分析了涂层中存在的官能团。涂层织物与 水,乙烯的接触角为172.9 ±  3°,169  ±  3°和167  ±  分别为乙二醇和甘油。涂层样品的化学稳定性已通过将样品浸入不同的pH溶液和不同的溶剂中进行了评估,显示了涂层优异的化学稳定性。用水,清洁剂和石油醚进行超声波处理,以及水射流冲击试验揭示了涂层的机械稳定性。涂层织物的热稳定性已通过在不同温度下对样品进行退火的方法进行了检验。此外,它还具有抗污渍和抗紫外线辐射的能力。此外,这种涂层棉织物具有出色的自洁性和油水分离性能,使其适合工业应用。

更新日期:2017-12-06
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