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Double‐Hydrophobic‐Coating through Quenching for Hydrogels with Strong Resistance to Both Drying and Swelling
Advanced Science ( IF 14.3 ) Pub Date : 2020-01-24 , DOI: 10.1002/advs.201903145 Md Tariful Islam Mredha 1 , Hong Hieu Le 1 , Jiaxi Cui 2, 3 , Insu Jeon 1
Advanced Science ( IF 14.3 ) Pub Date : 2020-01-24 , DOI: 10.1002/advs.201903145 Md Tariful Islam Mredha 1 , Hong Hieu Le 1 , Jiaxi Cui 2, 3 , Insu Jeon 1
Affiliation
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In recent years, various hydrogels with a wide range of functionalities have been developed. However, owing to the two major drawbacks of hydrogels—air‐drying and water‐swelling—hydrogels developed thus far have yet to achieve most of their potential applications. Herein, a bioinspired, facile, and versatile method for fabricating hydrogels with high stability in both air and water is reported. This method includes the creation of a bioinspired homogeneous fusion layer of a hydrophobic polymer and oil in the outermost surface layer of the hydrogel via a double‐hydrophobic‐coating produced through quenching. As a proof‐of‐concept, this method is applied to a polyacrylamide hydrogel without compromising its mechanical properties. The coated hydrogel exhibits strong resistance to both drying in air and swelling in multiple aqueous environments. Furthermore, the versatility of this method is demonstrated using different types of hydrogels and oils. Because this method is easy to apply and is not dependent on hydrogel surface chemistry, it can significantly broaden the scope of next‐generation hydrogels for real‐world applications in both wet and dry environments.
中文翻译：
水凝胶淬火双疏水涂层具有较强的抗干燥和溶胀能力
近年来，人们开发了各种具有多种功能的水凝胶。然而，由于水凝胶的两个主要缺点——空气干燥和遇水膨胀——迄今为止开发的水凝胶尚未实现大部分潜在应用。本文报道了一种受生物启发的、简便且通用的方法，用于制造在空气和水中均具有高稳定性的水凝胶。该方法包括通过淬火产生的双疏水涂层，在水凝胶的最外表面层创建疏水聚合物和油的仿生均匀融合层。作为概念验证，该方法应用于聚丙烯酰胺水凝胶，而不影响其机械性能。涂层水凝胶对空气中干燥和多种水环境中的膨胀表现出很强的抵抗力。此外，使用不同类型的水凝胶和油证明了该方法的多功能性。由于该方法易于应用且不依赖于水凝胶表面化学，因此它可以显着拓宽下一代水凝胶在潮湿和干燥环境中实际应用的范围。
更新日期：2020-01-24
中文翻译：
水凝胶淬火双疏水涂层具有较强的抗干燥和溶胀能力
近年来，人们开发了各种具有多种功能的水凝胶。然而，由于水凝胶的两个主要缺点——空气干燥和遇水膨胀——迄今为止开发的水凝胶尚未实现大部分潜在应用。本文报道了一种受生物启发的、简便且通用的方法，用于制造在空气和水中均具有高稳定性的水凝胶。该方法包括通过淬火产生的双疏水涂层，在水凝胶的最外表面层创建疏水聚合物和油的仿生均匀融合层。作为概念验证，该方法应用于聚丙烯酰胺水凝胶，而不影响其机械性能。涂层水凝胶对空气中干燥和多种水环境中的膨胀表现出很强的抵抗力。此外，使用不同类型的水凝胶和油证明了该方法的多功能性。由于该方法易于应用且不依赖于水凝胶表面化学，因此它可以显着拓宽下一代水凝胶在潮湿和干燥环境中实际应用的范围。
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