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説明:

Bio-inspired unidirectional flow of tiny aqueous droplets across the fibrous substrate paved the way for the emergence of various advanced materials. In the past, textiles decorated with noncontact-based wettability-patterns enabled unidirectional water flow—without flooding the top surface by the transferred water. However, such approaches mostly suffer from a low (≈0.176 µL mm−2 s−1) flow rate and are likely to delay the overall liquid ejection process. Here, a chemically reactive coating capable of tailoring water wettability (121.3° ± 2.4° to 153.3° ± 1.8°) is introduced on commercially available textiles to develop chemically modulated wettability-pattern for achieving a rapid (2.57 ± 0.28 µL mm−2 s−1) flow rate of water against the gravity with an ability to roll the accumulated liquids on the top surface. The spatially selected and controlled chemical modification with hydrophilic and hydrophobic small molecules through a 1, 4-conjugate addition reaction yielded a 3D channel with a customized wettability gradient. The pinning and depinning of invaded water through such chemically decorated channels enabled unidirectional and fast penetration of liquid, where the water penetration resistance largely depends on the water penetration direction and dimension of the chemically modulated channels.

権利情報:

• In Copyright
  

  This is the peer reviewed version of the following article: S. Kumar, A. Borbora, P. Chakraborty, H. Sarma, A. Bandyopadhyay, A. Bose, B. B. Mandal, M. Tenjimbayashi, U. Manna, Controlled Chemical-Patterning of Textile to Accelerate Anti-Gravity Water Flow. Adv. Funct. Mater. 2024, 34, 2410955, which has been published in final form at https://doi.org/10.1002/adfm.202410955. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

キーワード: superwetting, droplet transportation

刊行年月日: 2024-07-30

出版者: Wiley

掲載誌:

• ADVANCED FUNCTIONAL MATERIALS (ISSN: 16163028) vol. 34 issue. 52 2410955

研究助成金:

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5223

公開URL: https://doi.org/10.1002/adfm.202410955

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更新時刻: 2025-07-30 08:30:30 +0900

MDRでの公開時刻: 2025-07-30 08:16:38 +0900