Functionalized super-repellent polymeric materials play important roles in academic and industrial fields. In this work, a versatile continuous super-repellent polymeric film (CSPF) integrating reversible wettability with design manipulation was synthesized. On the basis of the optimal combination of a polyurethane acrylate (PUA)/precipitated silica particle (PSP)/ethanol suspension, covalently cross-linking networks and hierarchical topography were constructed in a polymer skeleton, endowing the CSPF with solid mechanical strength (B hardness). Taking advantage of the continuous superhydrophobicity established by the silica particle across the film bulk, the CSPF was found to be repetitively exposed via the shedding of the surface layer to achieve reversible wettability and repair its nonwetting performance (>50 cycles). Accordingly, the continuous superhydrophobicity and regenerative feature enabled the CSPF to realize design manipulation successively and underwater display rapidly, which may broaden the application fields of super-repellent materials in marine transportation and undersea exploration. Furthermore, the CSPF also displayed enticing damage-resistance (>200 cycles), environmental stability (>5 days), and self-cleaning behavior. Our findings convincingly propose a feasible approach to fabricate versatile super-repellent polymeric materials as candidates for advanced and smart materials.
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http://dx.doi.org/10.1021/acsami.9b20081 | DOI Listing |
ACS Appl Mater Interfaces
December 2024
Department of Biomedical Engineering, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
ACS Appl Mater Interfaces
June 2023
Department of Biomedical Engineering, Schulich School of Engineering, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4.
Bacterial nanocellulose (BNC) is a naturally derived hydrogel that has recently paved its way in several biomedical applications. Despite its remarkable tissue-like properties, BNC does not express innate anticoagulant or antimicrobial properties; therefore, appropriate post-modification procedures are required to prevent nonspecific adhesion and enhance the hemocompatibility properties of BNC-based biointerface. Here, we report a new class of flexible, lubricant-infused BNC membranes with superior antithrombotic and antibacterial properties.
View Article and Find Full Text PDFAdv Sci (Weinh)
February 2022
State Key Laboratory of Chemo/Biosensing and Chemometrics, and College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
Fluorinated motifs are promising for the engineering of repellent coatings, however, a fundamental understanding of how to effectively bind these motifs to various substrates is required to improve their stability in different use scenarios. Herein, the binding of fluorinated polyhedral oligomeric silsesquioxanes (POSS) using a cyanoacrylate glue (binder) is computationally and experimentally evaluated. The composite POSS-binder coatings display ultralow surface energy (≈10 mJ m ), while still having large surface adhesions to substrates (300-400 nN), highlighting that super-repellent coatings (contact angles >150°) can be readily generated with this composite approach.
View Article and Find Full Text PDFACS Appl Mater Interfaces
February 2020
Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials , Hubei University, Wuhan 430062 , People's Republic of China.
Superwetting surfaces that repel various liquids have been exciting for biomimetic research and have displayed versatile potential applications. Generally, superhydrophobic coatings can allow for droplet rolling off and antifouling, whereas it is a challenge to achieve superomniphobic surfaces with transparency, flexibility, and conductivity. Here, we adopt an effective and simple method to fabricate a superomniphobic, transparent, and flexible smart silk fibroin (SF) membrane by spray-coating long AgNWs dispersed in polydimethylsiloxane (PDMS), followed by treatment with vacuum drying.
View Article and Find Full Text PDFACS Appl Mater Interfaces
February 2020
School of Materials Science and Engineering , South China University of Technology, Guangzhou 510640 , People's Republic of China.
Functionalized super-repellent polymeric materials play important roles in academic and industrial fields. In this work, a versatile continuous super-repellent polymeric film (CSPF) integrating reversible wettability with design manipulation was synthesized. On the basis of the optimal combination of a polyurethane acrylate (PUA)/precipitated silica particle (PSP)/ethanol suspension, covalently cross-linking networks and hierarchical topography were constructed in a polymer skeleton, endowing the CSPF with solid mechanical strength (B hardness).
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