1
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Jiang Y, Wan Z, Liu Q, Li X, Jiang B, Guo M, Fan P, Du S, Xu D, Liu C. Enhancing antibacterial properties of titanium implants through a novel Ag-TiO 2-OTS nanocomposite coating: a comprehensive study on resist-killing-disintegrate approach. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:1609-1630. [PMID: 38652755 DOI: 10.1080/09205063.2024.2344332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 03/22/2024] [Indexed: 04/25/2024]
Abstract
Titanium (Ti) implants are widely used in orthopedic and dental applications due to their excellent biocompatibility and mechanical properties. However, bacterial adhesion and subsequent biofilm formation on implant surfaces pose a significant risk of postoperative infections and complications. Conventional surface modifications often lack long-lasting antibacterial efficacy, necessitating the development of novel coatings with enhanced antimicrobial properties. This study aims to develop a novel Ag-TiO2-OTS (Silver-Titanium dioxide-Octadecyltrichlorosilane, ATO) nanocomposite coating, through a chemical plating method. By employing a 'resist-killing-disintegrate' approach, the coating is designed to inhibit bacterial adhesion effectively, and facilitate pollutant removal with lasting effects. Characterization of the coatings was performed using spectroscopy, electron microscopy, and contact angle analysis. Antibacterial efficacy, quantitatively evaluated against E. coli and S. aureus over 168 h, showed a significant reduction in bacterial adhesion by 76.6% and 66.5% respectively, and bacterial removal rates were up to 83.8% and 73.3% in comparison to uncoated Ti-base material. Additionally, antibacterial assays indicated that the ratio of the Lifshitz-van der Waals apolar component to electron donor surface energy components significantly influences bacterial adhesion and removal, underscoring a tunable parameter for optimizing antibacterial surfaces. Biocompatibility assessments with the L929 cell line revealed that the ATO coatings exhibited excellent biocompatibility, with minimal cytotoxicity and no significant impact on cell proliferation or apoptosis. The ATO coatings provided a multi-functionality surface that not only resists bacterial colonization but also possesses self-cleaning capabilities, thereby marking a substantial advancement in the development of antibacterial coatings for medical implants.
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Affiliation(s)
- Yu Jiang
- Department of Chemical Biology, School of Pharmaceutical Science, Capital Medical University, Beijing, China
| | - Zhou Wan
- Department of Beijing Anding Hospital, Capital Medical University, Beijing, China
| | - Qi Liu
- Department of Chemical Biology, School of Pharmaceutical Science, Capital Medical University, Beijing, China
| | - Xinxin Li
- Department of Chemical Biology, School of Pharmaceutical Science, Capital Medical University, Beijing, China
| | - Bo Jiang
- NMPA Key Laboratory for Quality Monitoring of Narcotic Drugs and Psychotropic Substances, Chongqing Institute for Food and Drug Control, Chongqing, China
| | - Mudan Guo
- NMPA Key Laboratory for Quality Monitoring of Narcotic Drugs and Psychotropic Substances, Chongqing Institute for Food and Drug Control, Chongqing, China
| | - Pengjue Fan
- Chongqing Zhengbo Biotech Ltd, Chongqing, China
| | - Siyi Du
- Chongqing Nankai Secondary School, Chongqing, China
| | - Doudou Xu
- NMPA Key Laboratory for Quality Monitoring of Narcotic Drugs and Psychotropic Substances, Chongqing Institute for Food and Drug Control, Chongqing, China
| | - Chen Liu
- Department of Chemical Biology, School of Pharmaceutical Science, Capital Medical University, Beijing, China
- Engineering Research Center of Endogenous Prophylactic of Ministry of Education of China, Beijing Area Major Laboratory of Peptide and Small Molecular Drugs, China
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2
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Hao X, Cheng Z, Zhang Y, Xie J, Zheng H, Yue C, Sheng W. Wettability Study of an Acidified Nano-TiO 2 Superhydrophobic Surface. ACS OMEGA 2024; 9:4447-4454. [PMID: 38313553 PMCID: PMC10832036 DOI: 10.1021/acsomega.3c07011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/23/2023] [Accepted: 11/24/2023] [Indexed: 02/06/2024]
Abstract
The operation of aerospace equipment is often affected by icing and frosting. In order to reduce the loss caused by icing in the industrial field, it is an effective method to prepare superhydrophobic coatings by modifying nanoparticles with low surface energy materials. In order to explore a method of preparing a superhydrophobic surface that can be popularized, a two-step spraying method was employed to create a superhydrophobic coating. The surface was characterized by Fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscopy (SEM). The optimal preparation process was obtained by analyzing the surface contact angle data. The results showed that stearic acid was grafted onto the surface of TiO2 by esterification reaction. The existence of long methyl and methylene hydrophobic groups in the tail of the stearic acid molecule made the modified TiO2 hydrophobic. It is verified that water molecules have strong adsorption on the surface of unmodified TiO2. Stearic acid molecules can reduce the interfacial energy in the system.
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Affiliation(s)
- Xiaoru Hao
- School
of Mechanical and Power Engineering, Henan
Polytechnic University, Jiaozuo 454003, PR China
| | - Zhihao Cheng
- School
of Mechanical and Power Engineering, Henan
Polytechnic University, Jiaozuo 454003, PR China
| | - Yu Zhang
- School
of Mechanical and Power Engineering, Henan
Polytechnic University, Jiaozuo 454003, PR China
| | - Jun Xie
- School
of Mechanical and Power Engineering, Henan
Polytechnic University, Jiaozuo 454003, PR China
| | - Haikun Zheng
- School
of Mechanical and Power Engineering, Henan
Polytechnic University, Jiaozuo 454003, PR China
| | - Chunxiao Yue
- Shanghai
Jian Qiao University, Pudong, Shanghai 201306, PR China
| | - Wei Sheng
- School
of Mechanical and Power Engineering, Henan
Polytechnic University, Jiaozuo 454003, PR China
- Hami
Yuxin New Energy Industry Research Institute, Hami 839000, PR China
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3
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Imtiaz A, Othman MHD, Jilani A, Khan IU, Kamaludin R, Ayub M, Samuel O, Kurniawan TA, Hashim N, Puteh MH. A critical review in recent progress of hollow fiber membrane contactors for efficient CO 2 separations. CHEMOSPHERE 2023; 325:138300. [PMID: 36893870 DOI: 10.1016/j.chemosphere.2023.138300] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/21/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Among wide range of membrane-based operations, membrane contactors, as they reify comparatively modern membrane-based mechanism are gaining quite an attention in both pilot and industrial scales. In recent literature, carbon capture is one of the most researched applications of membrane contactors. Membrane contactors have the potential to minimize the energy consumption and capital cost of traditional CO2 absorptions columns. In a membrane contactor, CO2 regeneration can take place below the solvent boiling point, resulting into lower consumption of energy. Various polymeric as well as ceramic membrane materials have been employed in gas liquid membrane contactors along with several solvents including amino acids, ammonia, amines etc. This review article provides detailed introduction of membrane contactors in terms of CO2 removal. It also discusses that the main challenge that is faced by membrane contactors is membrane pore wetting caused by solvent that in turn can reduce the mass transfer coefficient. Other potential challenges such as selection of suitable solvent and membrane pair as well as fouling are also discussed in this review and are followed by potential ways to reduce them. Furthermore, both membrane gas separation and membrane contactor technologies are analysed and compared in this study on the basis of their characteristics, CO2 separation performances and techno economical transvaluation. Consequently, this review provides an opportunity to thoroughly understand the working principle of membrane contactors along its comparison with membrane-based gas separation technology. It also provides a clear understanding of latest innovations in membrane contactor module designs as well as challenges encountered by membrane contactors along with possible solutions to overcome these challenges. Finally, semi commercial and commercial implementation of membrane contactors has been highlighted.
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Affiliation(s)
- Aniqa Imtiaz
- Advanced Membrane Technology Research Centre, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Facultyof Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Mohd Hafiz Dzarfan Othman
- Advanced Membrane Technology Research Centre, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Facultyof Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia.
| | - Asim Jilani
- Centre of Nanotechnology, King Abdul-Aziz University, 21589, Jeddah, Saudi Arabia.
| | - Imran Ullah Khan
- Department of Chemical and Energy Engineering, Pak-Austria Fachhochshule, Institute of Applied Sciences &Technology, Khanpur Road, Mang, Haripur, 22650, Pakistan
| | - Roziana Kamaludin
- Advanced Membrane Technology Research Centre, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Facultyof Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Muhammad Ayub
- Advanced Membrane Technology Research Centre, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Facultyof Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - Ojo Samuel
- Advanced Membrane Technology Research Centre, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Facultyof Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | | | - NurAwanis Hashim
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Mohd Hafiz Puteh
- Faculty of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia
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Lippert D, Burnham J, Seo D. Active Control of Contact Angles of Various Liquids from the Response of Self-Assembled Thiol Molecules to Electric Current. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5021-5030. [PMID: 36972418 PMCID: PMC10100822 DOI: 10.1021/acs.langmuir.3c00026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/15/2023] [Indexed: 06/18/2023]
Abstract
The ability to change wettability in situ would realize active surfaces that can change their functionality and adapt to different environments. This article reports a new and easy method that controls surface wettability in situ. In doing so, three hypotheses were to be proven. First, thiol molecules with dipole moments at the end that were adsorbed onto gold could change the contact angles of nonpolar or slightly polar liquids when an electric current was provided at the gold surface without having to ionize the dipole. It was also hypothesized that the molecules would undergo conformation changes as their dipoles would align with the magnetic field induced by the applied current. Second, the ability to change contact angles was modified by mixing ethanethiol, a much shorter thiol with no dipole, with the abovementioned thiol molecules because it would provide space for the thiol molecules to undergo conformation changes. Third, the indirect evidence of the conformation change was verified with attenuated total reflection Fourier transform infrared (FT-IR) spectroscopy. Four thiol molecules that controlled the contact angles of deionized water and hydrocarbon liquids were identified. The abilities of those four molecules in changing the contact angles were modified by adding ethanethiol. A quartz crystal microbalance was used to infer the possible change in the distance between the adsorbed thiol molecules by investigating adsorption kinetics. The changes in FT-IR peaks with respect to applied currents were also presented as indirect evidence for the conformation change. This method was compared with other reported methods that control wettability in situ. The differences between the voltage-driven method to induce conformation changes of thiol molecules and the method presented in this paper were further discussed to emphasize that the mechanism by which the conformation change was induced in this article was most likely because of the dipole-electric current interaction.
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Affiliation(s)
| | | | - Dongjin Seo
- . Tel: +1-801-422-8570.
Fax: +1-801-422-0151
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5
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Sharif R, Mohsin M, Qutab HG, Saleem F, Bano S, Nasir R, Wahlah A. Durable water and oil repellents along with green chemistries: an overview. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-023-02763-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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6
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Fabrication and Properties of Hydrophobically Modified ZnO–SiO2 Nanocomposite with Polysiloxane. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02571-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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7
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Liu H, Xiong H, Chang Y, Xu J, Xu C, Liu Y. Fabrication of Superhydrophobic Coating Based on Waterborne Silicone-Modified Polyurethane Dispersion and Silica Nanoparticles. Polymers (Basel) 2022; 15:polym15010022. [PMID: 36616372 PMCID: PMC9824546 DOI: 10.3390/polym15010022] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/15/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
In this work, eco-friendly superhydrophobic coatings were prepared by dispersing hydrophobic silica nanoparticles and a waterborne silicone-modified polyurethane dispersion into an ethanol solution, which was free of fluorine and volatile toxic solvents. The effects of the silica content on the hydrophobicity and scratch resistance of the hydrophobic surfaces were investigated by WCA measurements and a sandpaper abrasion test, respectively. The experimental results indicated that when the silica content exceeded 30% by mass, the silica/silicone-modified polyurethane coatings had superhydrophobicity. Meanwhile, the superhydrophobic coatings with a silica content of 30% by mass simultaneously had the optimal mechanical stability. We studied the morphology and roughness of the hydrophobic surfaces with different silica content and attempted to briefly explain the influence mechanism of silica content. Furthermore, anti-icing and oil-water separation experiments were carried out on the superhydrophobic coatings, which exhibited good anti-icing performance and high separation efficiency. The eco-friendly superhydrophobic coating is expected to be applied in the fields of oil-water separation, anti-icing, and self-cleaning, etc.
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Affiliation(s)
- Haidong Liu
- Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China
| | - Hengsen Xiong
- Key Laboratory of Testing Technology for Manufacturing Process, Ministry of Education, Southwest University of Science and Technology, Mianyang 621010, China
| | - Yongming Chang
- Chengdu Kaimite Co., Ltd., No. 39 Jiancai Road, Chengdu 610051, China
| | - Jianhui Xu
- Chengdu Kaimite Co., Ltd., No. 39 Jiancai Road, Chengdu 610051, China
- Chongqing Zhixiang Paving Technology Engineering Co., Ltd., China Merchants Chongqing Communications Technology Research and Design Institute, Chongqing 401336, China
- Correspondence: (J.X.); (C.X.)
| | - Chuanlai Xu
- Sichuan Jiuzhou Electric Group Co., Ltd., No. 6 Jiuhua Road, Mianyang 621000, China
- Sichuan Avionics System Product Lightweight Design and Manufacturing Engineering Laboratory, Mianyang 621000, China
- Correspondence: (J.X.); (C.X.)
| | - Yaolu Liu
- Department of Engineering Mechanics, Chongqing University, Chongqing 400044, China
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8
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Xia Y, Zhu N, Zhao Y, Zhu J, Chen H, Xu L, Yao L. Construction of Durable Self-Cleaning PDMS Film on Polyester Fabric Surface. MATERIALS (BASEL, SWITZERLAND) 2022; 16:ma16010052. [PMID: 36614386 PMCID: PMC9820876 DOI: 10.3390/ma16010052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/11/2022] [Accepted: 12/14/2022] [Indexed: 05/02/2023]
Abstract
The superhydrophobic surface can be prepared by two methods; one is by reducing the surface energy, and the other is by constructing a micro-nano rough structure. To achieve high superhydrophobic performance in terms of durability, the firm combination of hydrophobic coating and substrate is particularly important. Here, we use polydimethylsiloxane (PDMS) as a low surface energy monomer, water-borne polyurethane (WPU) as a dispersing aid, and use high-power ultrasound to disperse PDMS in water to make emulsion. The polyester matrix is etched by atmospheric plasma, dipped in PDMS emulsion, dried, and finally baked to induce PDMS on the surface of polyester fiber to cross-link into film. A series of tests on the self-cleaning polyester fabric prepared by this method show that when the concentration of PDMS is 8 g/L and the mass ratio of PDMS to WPU is 20:1, the water contact angle (WCA) reaches the maximum value of 148.2°, which decreases to 141.5° after 200 times of washing and 138.6° after 5000 times of rubbing. Before and after PDMS coating, the tensile strength of polyester fabric increases from 489.4 N to 536.4 N, and the water vapor transmission decreases from 13,535.7 g/(m2·d) to 12,224.3 g/(m2·d). This research is helpful to the large-scale production of self-cleaning polyester fabric. In the future, on the basis of this research, we will add functional powder to endow self-cleaning polyester fabric with higher hydrophobicity and other properties.
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Affiliation(s)
- Yong Xia
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong 226019, China
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Nan Zhu
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Ying Zhao
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong 226019, China
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Jiehui Zhu
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Huajie Chen
- College of Textile and Clothing, Nantong University, Nantong 226019, China
| | - Liyun Xu
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong 226019, China
| | - Lirong Yao
- National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University, Nantong 226019, China
- Correspondence: ; Tel.: +86-150-5126-2516
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9
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Saleh SM, Alminderej FM, Mohamed AMA. Superhydrophobic and Corrosion Behaviour of PVDF-CeO 2 Composite Coatings. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8674. [PMID: 36500171 PMCID: PMC9737417 DOI: 10.3390/ma15238674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Composite coatings of polyvinylidene fluoride (PVDF)/CeO2 were developed by using the spray approach to explore the wetting and corrosion behaviour of coated materials for applications related to industry. PVDF was combined with different quantities of CeO2 nanoparticles followed by spraying onto glass, aluminium, and steel substrates. The sessile droplet method and microscopy studies were used to assess the wetting behaviour and morphology of the coated surfaces, respectively. The corrosion resistance of uncoated substrates coated with PVDF only was compared with those coated with PVDF/CeO2 nanoparticles through Tafel polarization techniques. In psi, the force of adhesion was measured between the coating layer and the substrates. The PVDF/CeO2-coated steel had a significantly greater water contact angle and lower contact angle hysteresis than coated aluminium and glass substrates, reaching 157 ± 2° and 8 ± 1°, respectively. The corrosion protection efficiency of the superhydrophobic PVDF/CeO2 coatings was considerably higher for steel and aluminium when compared with PVDF coatings. The PVDF/CeO2 coated substrates had modest adhesion between the coating layer and the substrates, but it was still acceptable. Furthermore, the PVDF/CeO2 coatings outperformed PVDF alone in terms of mechanical properties.
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Affiliation(s)
- Sayed M. Saleh
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
- Chemistry Branch, Department of Science and Mathematics, Faculty of Petroleum and Mining Engineering, Suez University, Suez 43721, Egypt
| | - Fahad M. Alminderej
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
| | - Adel M. A. Mohamed
- Department of Metallurgical and Materials Engineering, Faculty of Petroleum and Mining Engineering, Suez University, Suez 43512, Egypt
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10
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Advances in the Fabrication and Characterization of Superhydrophobic Surfaces Inspired by the Lotus Leaf. Biomimetics (Basel) 2022; 7:biomimetics7040196. [PMID: 36412724 PMCID: PMC9680393 DOI: 10.3390/biomimetics7040196] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/28/2022] [Accepted: 11/02/2022] [Indexed: 11/12/2022] Open
Abstract
Nature has proven to be a valuable resource in inspiring the development of novel technologies. The field of biomimetics emerged centuries ago as scientists sought to understand the fundamental science behind the extraordinary properties of organisms in nature and applied the new science to mimic a desired property using various materials. Through evolution, living organisms have developed specialized surface coatings and chemistries with extraordinary properties such as the superhydrophobicity, which has been exploited to maintain structural integrity and for survival in harsh environments. The Lotus leaf is one of many examples which has inspired the fabrication of superhydrophobic surfaces. In this review, the fundamental science, supported by rigorous derivations from a thermodynamic perspective, is presented to explain the origin of superhydrophobicity. Based on theory, the interplay between surface morphology and chemistry is shown to influence surface wetting properties of materials. Various fabrication techniques to create superhydrophobic surfaces are also presented along with the corresponding advantages and/or disadvantages. Recent advances in the characterization techniques used to quantify the superhydrophobicity of surfaces is presented with respect to accuracy and sensitivity of the measurements. Challenges associated with the fabrication and characterization of superhydrophobic surfaces are also discussed.
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11
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Chruściel JJ. Modifications of Textile Materials with Functional Silanes, Liquid Silicone Softeners, and Silicone Rubbers-A Review. Polymers (Basel) 2022; 14:4382. [PMID: 36297958 PMCID: PMC9611165 DOI: 10.3390/polym14204382] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 08/25/2022] [Accepted: 09/27/2022] [Indexed: 11/21/2022] Open
Abstract
General information concerning different kinds of chemical additives used in the textile industry has been described in this paper. The properties and applications of organofunctional silanes and polysiloxanes (silicones) for chemical and physical modifications of textile materials have been reviewed, with a focus on silicone softeners, silane, and silicones-based superhydrophobic finishes and coatings on textiles composed of silicone elastomers and rubbers. The properties of textile materials modified with silanes and silicones and their practical and potential applications, mainly in the textile industry, have been discussed.
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Affiliation(s)
- Jerzy J Chruściel
- ŁUKASIEWICZ Research Network-Lodz Institute of Technology, Brzezińska Str. 5/15, 92-103 Łódź, Poland
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12
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Sfameni S, Lawnick T, Rando G, Visco A, Textor T, Plutino MR. Functional Silane-Based Nanohybrid Materials for the Development of Hydrophobic and Water-Based Stain Resistant Cotton Fabrics Coatings. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12193404. [PMID: 36234532 PMCID: PMC9565586 DOI: 10.3390/nano12193404] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 05/31/2023]
Abstract
The textile-finishing industry, is one of the main sources of persistent organic pollutants in water; in this regard, it is necessary to develop and employ new sustainable approaches for fabric finishing and treatment. This research study shows the development of an efficient and eco-friendly procedure to form highly hydrophobic surfaces on cotton fabrics using different modified silica sols. In particular, the formation of highly hydrophobic surfaces on cotton fabrics was studied by using a two-step treatment procedure, i.e., first applying a hybrid silica sol obtained by hydrolysis and subsequent condensation of (3-Glycidyloxypropyl)trimethoxy silane with different alkyl(trialkoxy)silane under acid conditions, and then applying hydrolyzed hexadecyltrimethoxysilane on the treated fabrics to further improve the fabrics' hydrophobicity. The treated cotton fabrics showed excellent water repellency with a water contact angle above 150° under optimum treatment conditions. The cooperative action of rough surface structure due to the silica sol nanoparticles and the low surface energy caused by long-chain alkyl(trialkoxy)silane in the nanocomposite coating, combined with the expected roughness on microscale due to the fabrics and fiber structure, provided the treated cotton fabrics with excellent, almost super, hydrophobicity and water-based stain resistance in an eco-sustainable way.
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Affiliation(s)
- Silvia Sfameni
- Department of Engineering, University of Messina, Contrada di Dio, S. Agata, 98166 Messina, Italy
- Institute for the Study of Nanostructured Materials, ISMN–CNR, Palermo, c/o Department ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
| | - Tim Lawnick
- TEXOVERSUM School of Textiles, Reutlingen University, 72762 Reutlingen, Germany
| | - Giulia Rando
- Institute for the Study of Nanostructured Materials, ISMN–CNR, Palermo, c/o Department ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
- Department of ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, Vill. S. Agata, 98166 Messina, Italy
| | - Annamaria Visco
- Department of Engineering, University of Messina, Contrada di Dio, S. Agata, 98166 Messina, Italy
- Institute for Polymers, Composites and Biomaterials CNR IPCB, Via Paolo Gaifami 18, 95126 Catania, Italy
| | - Torsten Textor
- TEXOVERSUM School of Textiles, Reutlingen University, 72762 Reutlingen, Germany
| | - Maria Rosaria Plutino
- Institute for the Study of Nanostructured Materials, ISMN–CNR, Palermo, c/o Department ChiBioFarAm, University of Messina, Viale F. Stagno d’Alcontres 31, 98166 Messina, Italy
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13
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Zaman Khan M, Militky J, Petru M, Tomková B, Ali A, Tören E, Perveen S. Recent advances in superhydrophobic surfaces for practical applications: A review. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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14
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A practical strategy for fabrication of transparent, robust and environmentally friendly superhydrophobic surfaces for toys and games. SN APPLIED SCIENCES 2022. [DOI: 10.1007/s42452-022-05118-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Abstract
This work presents a practical strategy for fabrication of transparent, robust and environmentally friendly superhydrophobic surfaces for toys and games by a one-step spray coating method. A type of commercial stringed silica nanoparticles (NPs) is chemically modified by a mixture of two fluorine-free silanes, tetraethyl orthosilicate (TEOS) and dodecyltrimethoxysilane (DDTMS) via a sol–gel process with the aid of ammonia as a basic catalyst and a small amount of water in ethanol, resulting in the formation of an amphiphilic solution, suitable for coating a variety of substrate materials such as glass, ceramics, wood, metal, plastics and paper and so on. Polyarylic acid (PAA) is used as a binder to improve the mechanical robustness of the superhydrophobic coating. Effects of silica NPs concentration, mixing order, TEOS/DDTMS ratio, PAA amount and catalyst on the transparency, uniformity, mechanical robustness and superhydrophobicity of the resultant coatings deposited on the glass slides are investigated. The mechanisms for the superhydrophobicity and water-resistance as well as the effects of catalyst and mixing order are discussed. Furthermore, an example of the superhydrophobic surfaces as toys is presented. This work will pave the way for expanding wide applications of the superhydrophobic surfaces towards toys and games.
Article Highlights
A one-step spray coating method is developed to fabricate transparent, robust and environmentally friendly superhydrophobic surfaces on various substrates
Polyacrylic acid (PAA) plays an important role in improv-ing the uniformity and mechanical robustness of the superhydrophobic coating.
An example of practical application is presented for the superhydrophobic surfaces as toys and game
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15
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Iqbal D, Zhao Y, Zhao R, Russell SJ, Ning X. A Review on Nanocellulose and Superhydrophobic Features for Advanced Water Treatment. Polymers (Basel) 2022; 14:2343. [PMID: 35745924 PMCID: PMC9229312 DOI: 10.3390/polym14122343] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/05/2022] [Accepted: 06/07/2022] [Indexed: 02/04/2023] Open
Abstract
Globally, developing countries require access to safe drinking water to support human health and facilitate long-term sustainable development, in which waste management and control are critical tasks. As the most plentiful, renewable biopolymer on earth, cellulose has significant utility in the delivery of potable water for human consumption. Herein, recent developments in the application of nanoscale cellulose and cellulose derivatives for water treatment are reviewed, with reference to the properties and structure of the material. The potential application of nanocellulose as a primary component for water treatment is linked to its high aspect ratio, high surface area, and the high number of hydroxyl groups available for molecular interaction with heavy metals, dyes, oil-water separation, and other chemical impurities. The ability of superhydrophobic nanocellulose-based textiles as functional fabrics is particularly acknowledged as designed structures for advanced water treatment systems. This review covers the adsorption of heavy metals and chemical impurities like dyes, oil-water separation, as well as nanocellulose and nanostructured derivative membranes, and superhydrophobic coatings, suitable for adsorbing chemical and biological pollutants, including microorganisms.
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Affiliation(s)
- Danish Iqbal
- Shandong Center for Engineered Nonwovens, Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China; (D.I.); (Y.Z.); (R.Z.)
| | - Yintao Zhao
- Shandong Center for Engineered Nonwovens, Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China; (D.I.); (Y.Z.); (R.Z.)
| | - Renhai Zhao
- Shandong Center for Engineered Nonwovens, Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China; (D.I.); (Y.Z.); (R.Z.)
| | - Stephen J. Russell
- Leeds Institute of Textiles and Colour (LITAC), School of Design, University of Leeds, Leeds LS2 9JT, UK;
| | - Xin Ning
- Shandong Center for Engineered Nonwovens, Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China; (D.I.); (Y.Z.); (R.Z.)
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Do VT, Tran NG, Chun DM. Fabrication of robust superhydrophobic micro-nano hierarchical surface structure using compression molding with carbon soot nanoparticles and thermoplastic polymer. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Suitability and Sustainability of Anti-Graffiti Treatments on Natural Stone Materials. SUSTAINABILITY 2022. [DOI: 10.3390/su14010575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Graffiti vandalism represents an aesthetic and structural phenomenon of degradation both for buildings and cultural heritage: the most used sprays and markers can permeate the stone materials exposing them to degradation. Hence, great attention is being currently devoted to new non-invasive chemical approaches to face this urgent problem. This work is aimed at deeply examining the effects of some of the most sustainable chemical protective methods on the physical properties of natural building materials (e.g., tuff and limestone) by testing two commercial anti-graffiti products. It was found that the nanotechnological product Ector (E) was more effective than Nord Resine (NR) in anti-graffiti applications even if its permanent character hinders its application to the cultural heritage. Conversely, the less performant NR could be used in this field due to its sacrificial behavior, according to the guidelines of the Italian Ministry of Cultural Heritage and Activities and Tourism. The findings highlight the importance of developing new sustainable methods for the preservation of cultural and building materials from vandal graffiti, which should combine the high hydrophobia, the ecological characteristics, and the effectiveness of E, with the sacrificial properties of NR.
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Performance of Sprayed PVDF-Al 2O 3 Composite Coating for Industrial and Civil Applications. MATERIALS 2021; 14:ma14216358. [PMID: 34771883 PMCID: PMC8585398 DOI: 10.3390/ma14216358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 11/16/2022]
Abstract
Because of their great water repellency, Superhydrophobic coatings have a major impact on a variety of industrial applications. The current study's key originality is the development of low-cost, stable, superhydrophobic, and corrosion-resistant composite coatings. In the present work, polyvinylidene fluoride (PVDF)/Al2O3 composite coatings were produced using the spray technique to investigate the wettability and corrosion behavior of the coated materials for industrial and civil applications. PVDF was mixed with various concentrations of Al2O3 nanoparticles, and the mixture was sprayed onto steel, aluminum, and glass substrates. The wettability and morphology of the coated surfaces were investigated using the sessile droplet method and scanning electron microscopy, respectively. The corrosion resistance of bare substrates was compared to that of those coated with PVDF alone and those coated with PVDF/Al2O3 nanoparticles using Tafel polarization techniques. The force of adhesion between the coat and the substrates was measured in pounds per square inch. A nanoindentation test was also used to measure the hardness of the coating layer. The PVDF/Al2O3 coated steel showed a significantly higher water contact angle and lower contact angle hysteresis, reaching 157 ± 2° and 7 ± 1°, respectively, compared to the coated aluminum and glass substrates. Corrosion test results showed that the superhydrophobic PVDF/Al2O3 coatings had a much higher corrosion protection efficiency for steel and aluminum than that of the PVDF ones. The PVDF/Al2O3 coated substrates showed moderate but still acceptable adhesion between the coating layer and the substrates. Moreover, the PVDF/Al2O3 coatings had much better mechanical properties than the PVDF only coatings. Such type of coating could be a promising candidate for possible industrial and civil applications.
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Lee E, Kim DH. Fabrication of transparent superhydrophobic polydimethylsiloxane elastomer by controlling the degree of combustion using thermal convection. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-021-0887-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Kouser T, Xiong Y, Yang D. Contribution of Superhydrophobic Surfaces and Polymer Additives to Drag Reduction. CHEMBIOENG REVIEWS 2021. [DOI: 10.1002/cben.202000036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Taiba Kouser
- Huazhong University of Science and Technology (HUST) Department of Mechanics 430074 Wuhan China
| | - Yongliang Xiong
- Huazhong University of Science and Technology (HUST) Department of Mechanics 430074 Wuhan China
- Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment Luoyu Road 1037 430074 Wuhan China
| | - Dan Yang
- Huazhong University of Science and Technology (HUST) School of Naval Architecture and Ocean Engineering 430074 Wuhan China
- Huazhong University of Science and Technology (HUST) Hubei Key Laboratory of Naval Architecture & Ocean Engineering Hydrodynamics 430074 Wuhan China
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Wang Z, Li Y, Huan D, Xiao J, Li Y. The fabrication of superhydrophobic GF/PEEK composites with integrated structure and function by prepreg modifying and hot-pressing process. POLYM-PLAST TECH MAT 2021. [DOI: 10.1080/25740881.2021.1904981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Zhiyuan Wang
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Yong Li
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Dajun Huan
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Jun Xiao
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
| | - Yanrui Li
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, China
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Atthi N, Dielen M, Sripumkhai W, Pattamang P, Meananeatra R, Saengdee P, Thongsook O, Ranron N, Pankong K, Uahchinkul W, Supadech J, Klunngien N, Jeamsaksiri W, Veldhuizen P, ter Meulen JM. Fabrication of High Aspect Ratio Micro-Structures with Superhydrophobic and Oleophobic Properties by Using Large-Area Roll-to-Plate Nanoimprint Lithography. NANOMATERIALS 2021; 11:nano11020339. [PMID: 33572813 PMCID: PMC7912431 DOI: 10.3390/nano11020339] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 12/17/2022]
Abstract
Bio-inspired surfaces with superamphiphobic properties are well known as effective candidates for antifouling technology. However, the limitation of large-area mastering, patterning and pattern collapsing upon physical contact are the bottleneck for practical utilization in marine and medical applications. In this study, a roll-to-plate nanoimprint lithography (R2P NIL) process using Morphotonics’ automated Portis NIL600 tool was used to replicate high aspect ratio (5.0) micro-structures via reusable intermediate flexible stamps that were fabricated from silicon master molds. Two types of Morphotonics’ in-house UV-curable resins were used to replicate a micro-pillar (PIL) and circular rings with eight stripe supporters (C-RESS) micro-structure onto polycarbonate (PC) and polyethylene terephthalate (PET) foil substrates. The pattern quality and surface wettability was compared to a conventional polydimethylsiloxane (PDMS) soft lithography process. It was found that the heights of the R2P NIL replicated PIL and C-RESS patterns deviated less than 6% and 5% from the pattern design, respectively. Moreover, the surface wettability of the imprinted PIL and C-RESS patterns was found to be superhydro- and oleophobic and hydro- and oleophobic, respectively, with good robustness for the C-RESS micro-structure. Therefore, the R2P NIL process is expected to be a promising method to fabricate robust C-RESS micro-structures for large-scale anti-biofouling application.
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Affiliation(s)
- Nithi Atthi
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
- Correspondence:
| | - Marc Dielen
- Morphotonics B.V., De Run 4281, 5503 LM Veldhoven, The Netherlands; (M.D.); (P.V.); (J.M.t.M.)
| | - Witsaroot Sripumkhai
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Pattaraluck Pattamang
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Rattanawan Meananeatra
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Pawasuth Saengdee
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Oraphan Thongsook
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Norabadee Ranron
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Krynnaras Pankong
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Warinrampai Uahchinkul
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Jakrapong Supadech
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Nipapan Klunngien
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Wutthinan Jeamsaksiri
- Thai Microelectronics Center (TMEC), National Electronics and Computer Technology Center (NECTEC), Chachoengsao 24000, Thailand; (W.S.); (P.P.); (R.M.); (P.S.); (O.T.); (N.R.); (K.P.); (W.U.); (J.S.); (N.K.); (W.J.)
| | - Pim Veldhuizen
- Morphotonics B.V., De Run 4281, 5503 LM Veldhoven, The Netherlands; (M.D.); (P.V.); (J.M.t.M.)
| | - Jan Matthijs ter Meulen
- Morphotonics B.V., De Run 4281, 5503 LM Veldhoven, The Netherlands; (M.D.); (P.V.); (J.M.t.M.)
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Recent Progresses of Superhydrophobic Coatings in Different Application Fields: An Overview. COATINGS 2021. [DOI: 10.3390/coatings11020116] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
With the development of material engineering and coating industries, superhydrophobic coatings with exceptional water repellence have increasingly come into researchers’ horizons. The superhydrophobic coatings with corrosion resistance, self-cleaning, anti-fogging, drag-reduction, anti-icing properties, etc., meet the featured requirements from different application fields. In addition, endowing superhydrophobic coatings with essential performance conformities, such as transparency, UV resistance, anti-reflection, water-penetration resistance, thermal insulation, flame retardancy, etc. plays a remarkable role in broadening their application scope. Various superhydrophobic coatings were fabricated by diverse technologies resulting from the fundamental demands of different fields. Most past reviews, however, provided only limited information, and lacked detailed classification and presentation on the application of superhydrophobic coatings in different sectors. In the current review, we will highlight the recent progresses on superhydrophobic coatings in automobile, marine, aircraft, solar energy and architecture-buildings fields, and discuss the requirement of prominent functionalities and performance conformities in these vital fields. Poor durability of superhydrophobic coating remains a practical challenge that needs to be addressed through real-world application. This review serves as a good reference source and provides insight into the design and optimization of superhydrophobic coatings for different applications.
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Nakamura S, Archer RJ, Dunderdale GJ, Hozumi A. Perfluorinated compounds are not necessary: pegylated organosilanes can endow good water sliding/removal properties. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122625. [PMID: 32497862 DOI: 10.1016/j.jhazmat.2020.122625] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/27/2020] [Accepted: 03/30/2020] [Indexed: 06/11/2023]
Abstract
From a viewpoint of reducing the burden on both human health and the environment, alternative surface modification techniques for preparing highly water-repellent surfaces without the use of environmentally damaging perfluorocarbons are highly desirable. Among them, the development of hydrophilic surfaces showing superior water sliding/removal properties has been scarcely reported. In this study, we have successfully demonstrated the fabrication of smooth, transparent, and hydrophilic pegylated organosilanes (PEGn-Si, CH3O-(C2H4O)n-C3H6-Si(OCH3)3 where n = 3, 6-9, 9-12)-derived hybrid films showing excellent water sliding/removal properties using a simple sol-gel reaction of PEGn-Si and tetraethoxysilane (TEOS, Si(OC2H5)4). The final static/dynamic surface wetting properties of the samples were found to be significantly influenced by both the PEG chain length and their mixing ratios. The use of PEGn-Si with the longest PEG chain (n = 9-12) was found to be effective for improving water sliding/removal properties. Small volume water droplets (5 μL) on the PEG9-12-Si/TEOS hybrid film (static water contact angle (CA) of ∼40°) at a 90°-inclined surface could slide at an average speed of 3.4 mm/sec without pinning and tailing, which was about twice as fast as that on the PEG6-9-Si/TEOS hybrid film surface (1.5 mm/sec, static water CA of ∼40°), in spite of having similar static hydrophilic nature.
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Affiliation(s)
- Satoshi Nakamura
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98, Anagahora, Shimo-shidami, Moriyama, Nagoya 463-8560, Japan
| | - Richard J Archer
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98, Anagahora, Shimo-shidami, Moriyama, Nagoya 463-8560, Japan
| | - Gary J Dunderdale
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield, UK
| | - Atsushi Hozumi
- National Institute of Advanced Industrial Science and Technology (AIST), 2266-98, Anagahora, Shimo-shidami, Moriyama, Nagoya 463-8560, Japan.
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Seo D, Chen SY, Lee DW, Schrader AM, Ahn K, Page S, Koenig PH, Gizaw Y, Israelachvili JN. The shape and dynamics of deformations of viscoelastic fluids by water droplets. J Colloid Interface Sci 2020; 580:776-784. [DOI: 10.1016/j.jcis.2020.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 06/12/2020] [Accepted: 07/02/2020] [Indexed: 10/23/2022]
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Cai J, Gong Z, Tang Z, Li X, Wang Y, Yin H, Yang X. Experimental characterization of the bubble neck formation during its growth process on a superhydrophobic surface. NUCLEAR ENGINEERING AND DESIGN 2020. [DOI: 10.1016/j.nucengdes.2020.110762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Esmaeili AR, Mir N, Mohammadi R. A facile, fast, and low-cost method for fabrication of micro/nano-textured superhydrophobic surfaces. J Colloid Interface Sci 2020; 573:317-327. [PMID: 32289627 DOI: 10.1016/j.jcis.2020.04.027] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 01/19/2023]
Abstract
HYPOTHESIS Alkyl ketene dimer (AKD) is frequently used in paper industry as an inexpensive sizing agent. The formation of a porous structure after curing the solidified AKD for an extra-long time (4-6 days) results in superhydrophobicity. In this study, a facile and low-cost method was utilized to turn the surface of AKD superhydrophobic in a very short period of time. EXPERIMENTS We fabricated superhydrophobic coatings by dipping glass and paper substrates in molten AKD and then treating them with ethanol after solidification. The samples were characterized by X-ray diffraction, Scanning electron microscopy, Fourier transform-infrared spectroscopy, X-ray photoelectron spectroscopy, Confocal laser scanning microscopy, and dynamic contact angle goniometry. FINDINGS The results show that briefly treating the coatings, obtained from isothermally heated AKD melt at 40 °C for 3 min, with ethanol leads to superhydrophobicity with advancing and receding contact angles of 158.7 ± 1.4° and 156.8 ± 0.9°, respectively. By increasing the melt temperature to 70 °C and its heating time to 6 h followed by ethanol treatment, the advancing and receding contact angles increased to 163.7 ± 1.3° and 162.6 ± 1.2°, respectively. This enhancement in superhydrophobicity is due to the formation of porous, entangled irregular micro/nano textures that create air cushions on the surface resulting in droplet state transition from Wenzel to Cassie.
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Affiliation(s)
- Amir R Esmaeili
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Noshin Mir
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA
| | - Reza Mohammadi
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284, USA.
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Erbil HY. Practical Applications of Superhydrophobic Materials and Coatings: Problems and Perspectives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:2493-2509. [PMID: 32049544 DOI: 10.1021/acs.langmuir.9b03908] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Synthetic superhydrophobic (SH) surfaces were developed after 1990s, and the number of publications in this field is around 13 500 at present. However, the industrial production of SH coatings is very unsatisfying after the intensive research activity in the last two decades. The main reason is the loss of the water repellence properties when SH surfaces are exposed to outdoor conditions due to their weak mechanical properties and contamination from the medium which removes the initial SH properties. In this Feature Article, we focus on the scientific and technical reasons which prevent the application of the SH surfaces in our daily lives by highlighting some well-known but mostly overlooked problems in this area. (The synthesis methods of SH surfaces are not the subject of this article since they were reviewed previously in very good articles.) The basic contact angle science and the issue of the cancellation of the Wenzel and Cassie-Baxter equations are reviewed in the first part. The issues of the expensive and small-scale SH surface preparation problems, the difficulties in obtaining a transparent SH surface, the troubles arising from the water vapor condensation on an SH surface, the lack of robustness and abrasion resistance of most of the SH surfaces, the drawbacks of the fabricated self-healing SH surfaces, the short useful service life of self-cleaning SH surfaces due to surface contamination, and the ineffective anti-icing SH coatings are reviewed in the following text. Some important problems affecting the unsuccessful industrial applications of the SH surfaces are discussed critically in the Conclusions and Outlook section. Finally, some proposals are presented for future directions on the synthesis and applications of SH surfaces.
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Affiliation(s)
- H Yildirim Erbil
- Chemical Engineering Department, Gebze Technical University, Gebze 41400, Kocaeli, Turkey
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Pratiwi N, Zulhadjri, Arief S, Wellia DV. A Facile Preparation of Transparent Ultrahydrophobic Glass via TiO
2
/Octadecyltrichlorosilane (ODTS) Coatings for Self‐Cleaning Material. ChemistrySelect 2020. [DOI: 10.1002/slct.201904153] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nurul Pratiwi
- Department of ChemistryFaculty of Mathematics and Natural Sciences, Universitas Andalas 25163 Indonesia
| | - Zulhadjri
- Department of ChemistryFaculty of Mathematics and Natural Sciences, Universitas Andalas 25163 Indonesia
| | - Syukri Arief
- Department of ChemistryFaculty of Mathematics and Natural Sciences, Universitas Andalas 25163 Indonesia
| | - Diana Vanda Wellia
- Department of ChemistryFaculty of Mathematics and Natural Sciences, Universitas Andalas 25163 Indonesia
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Kodihalli Shivaprakash N, Zhang J, Nahum T, Barry C, Truong Q, Mead J. Roll-to-Roll Hot Embossing of High Aspect Ratio Micro Pillars for Superhydrophobic Applications. INT POLYM PROC 2019. [DOI: 10.3139/217.3815] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
AbstractMany surfaces in nature such as the lotus leaf, cicada wings, water spider legs and gecko feet have attracted attention due to their inherent superhydrophobicity and self-cleaning properties. These surfaces are characterized by water contact angles greater than 150° and contact angle hysteresis < 10°. In this work, a continuous fabrication methodology for production of such superhydrophobic surfaces consisting of well-ordered micro-pillar structures (aspect ratio greater than 1 (1.3)) on a large area polyamide film using roll-to-roll hot embossing process was demonstrated. It was found that the temperature played a significant role in replication. Incomplete replication was observed in regime 1 (150 to 155 °C) and the height of replication was influenced by nip pressure and roll speed due to viscosity variations. In contrast, complete replication was seen in regime 2 (190 to 195 °C) and the height of replication was insensitive to nip pressure and roll speed due to a fairly constant viscosity value. The embossed polyamide surface, once coated with a low surface energy 1H, 1H, 2H, 2H-perfluorooctyltrichlorosilane (PFTS) monolayer, showed super-repellant characteristics with respect to water and demonstrated a successful manufacturing approach to fabricate superhydrophobic surfaces.
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Affiliation(s)
- N. Kodihalli Shivaprakash
- 1Department of Plastics Engineering and Center for High-rate Nanomanufacturing, University of Massachusetts Lowell, Lowell, MA, USA
| | - J. Zhang
- 1Department of Plastics Engineering and Center for High-rate Nanomanufacturing, University of Massachusetts Lowell, Lowell, MA, USA
| | - T. Nahum
- 1Department of Plastics Engineering and Center for High-rate Nanomanufacturing, University of Massachusetts Lowell, Lowell, MA, USA
| | - C. Barry
- 1Department of Plastics Engineering and Center for High-rate Nanomanufacturing, University of Massachusetts Lowell, Lowell, MA, USA
| | - Q. Truong
- 2US Army Natick Soldier Research, Development and Engineering Center, Natick, MA, USA
| | - J. Mead
- 1Department of Plastics Engineering and Center for High-rate Nanomanufacturing, University of Massachusetts Lowell, Lowell, MA, USA
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31
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The Synthesis of a Superhydrophobic and Thermal Stable Silica Coating via Sol-Gel Process. COATINGS 2019. [DOI: 10.3390/coatings9100627] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A super-hydrophobic surface at a high temperature (400 °C) using the sol-gel method with tetraethoxysilane (TEOS) and methyltriethoxysilane (MTES) as precursors has been obtained. The effects of the coatings’ ages, deposited times and thicknesses on the hydrophobicity of the silica coatings have been analysed. The morphology, chemical composition, thermal degradation and hydrophobicity of the resulting surfaces have been studied by scanning electron microscopy (SEM), Fourier transfer infrared spectrometer (FT-IR), Thermogravimetry (TGA) and water contact angle (WCA) measurement. The results show that an average water contact angle of 149° after been cured at 400 °C for a coating aged for 5 days, and four deposition cycles using a dipping rate of 1000 mm/min was achieved.
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32
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Fabrication of surface-functionalized PUA composites to achieve superhydrophobicity. MICRO AND NANO SYSTEMS LETTERS 2019. [DOI: 10.1186/s40486-019-0090-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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33
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Vousoughi P, Moghbeli MR, Nikkhah SJ. Molecular Dynamics (MD) Simulation of Zwitterion-Functionalized PMMA with Hydrophilic and Antifouling Surface Characteristics. Macromol Res 2019. [DOI: 10.1007/s13233-019-7163-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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34
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Stammitti-Scarpone A, Acosta EJ. Solid-liquid-liquid wettability and its prediction with surface free energy models. Adv Colloid Interface Sci 2019; 264:28-46. [PMID: 30396508 DOI: 10.1016/j.cis.2018.10.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Revised: 10/09/2018] [Accepted: 10/22/2018] [Indexed: 12/23/2022]
Abstract
Understanding wettability in solid-liquid-liquid (SLL or immersed) systems is important for numerous applications. However, predicting SLL wetting behavior on smooth surfaces has received little attention. The objective of this work was to explore alternatives to predict SLL wettability. To this end, we first present a review of solid surface free energy (σS) data obtained from solid-liquid-air (SLA) contact angle (θLa) data and a summary of available SLL contact angle data for selected materials. Next, the existing surface free energy models for SLA systems are discussed in terms of their applicability to predict wettability of SLL systems. Finally, the SLL wettability of toluene drops on glass, mica, stainless steel and PTFE immersed in equilibrated Toluene-water-isopropyl alcohol (IPA) solutions was determined via contact angle (θO) measurements through the oil phase using the inverted sessile drop method over a wide range of interfacial tensions (γo-aq). The results were plotted as γo-aq·cosθO vs. γo-aq, showing a smooth wetting transition from water-wetting to oil-wetting with decreasing γo-aq for glass and stainless steel. Mica remained water-wetting, while PTFE oil-wetting. The Geometric (GM) and Harmonic (HM) mean approaches, and the Equation-of-State (EQS), originally developed for SLA systems, were extended to SLL systems. The extended GM and HM approaches could fit the SLL behavior after fitting the dispersive and polar contributions of the solid surface free energy (σSd, σSp), which required additional SLA θLa measurements using PTFE as the reference surface. However, attempts at predicting θO for systems with high γo-aq resulted in significant deviations, a problem linked to the high σSd values required to fit the wettability of low γo-aq systems (toluene-water-IPA). The extended EQS (e-EQS) method produced reasonable predictions of γo-aq·cosθO for all the available experimental and literature data. The e-EQS method required fitting one of the interfacial energy terms (γS-L). For low surface energy materials, such as PTFE, the γS-o value should be fitted. For high surface energy materials, the γS-aq should be fitted instead. The fitted values of γS-o for PTFE and γS-aq for glass were consistent with the values obtained from Young's equation applied to SLA data.
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Affiliation(s)
| | - E J Acosta
- Dept. Chemical Engineering and Applied Chemistry, University of Toronto, Canada.
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35
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Hassan N, Lu S, Xu W, He G, Faheem M, Ahmad N, Khan MA, Butt BZ. Fabrication of a Pt nanoparticle surface on an aluminum substrate to achieve excellent superhydrophobicity and catalytic activity. NEW J CHEM 2019. [DOI: 10.1039/c9nj00794f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A superhydrophobic Pt–Al2O3/Al surface with excellent application characteristics has been fabricated on an aluminium substrate by a chemical method and annealing process.
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Affiliation(s)
- Noor Hassan
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Shixiang Lu
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Wenguo Xu
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Ge He
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Muhammad Faheem
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Niaz Ahmad
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
| | - Maroof Ahmad Khan
- School of Chemistry and Chemical Engineering
- Beijing Institute of Technology
- Beijing 100081
- P. R. China
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36
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Yang C, Zhu Y, Wang Y, Fu H, Deng X, Yue H, Lu H, Jiang W, Liang B. Preparation of edible superhydrophobic Fe foil with excellent stability and durability and its applications in food containers with little residue. NEW J CHEM 2019. [DOI: 10.1039/c8nj05967e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A facile three-step strategy to prepare edible superhydrophobic Fe foil with excellent stability and regeneration.
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Affiliation(s)
- Chao Yang
- Low-carbon Technology and Reaction Engineering Laboratory
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Yingming Zhu
- Institute of New Energy and Low-carbon Technology
- Sichuan University
- Chengdu 610065
- China
| | - Yaoguang Wang
- Low-carbon Technology and Reaction Engineering Laboratory
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Hongyan Fu
- Low-carbon Technology and Reaction Engineering Laboratory
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Xiaoqiang Deng
- Low-carbon Technology and Reaction Engineering Laboratory
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Hairong Yue
- Low-carbon Technology and Reaction Engineering Laboratory
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Houfang Lu
- Institute of New Energy and Low-carbon Technology
- Sichuan University
- Chengdu 610065
- China
| | - Wei Jiang
- Low-carbon Technology and Reaction Engineering Laboratory
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Bin Liang
- Low-carbon Technology and Reaction Engineering Laboratory
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
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37
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Abstract
The need to transition to more sustainable and renewable technology has resulted in a focus on cellulose nanofibrils (CNFs) and nanocrystals (CNCs) as one of the materials of the future with potential for replacing currently used synthetic materials. Its abundance and bio-derived source make it attractive and sought after as well. CNFs and CNCs are naturally hydrophilic due to the abundance of -OH group on their surface which makes them an excellent recipient for applications in the medical industry. However, the hydrophilicity is a deterrent to many other industries, subsequently limiting their application scope. In either light, the increased rate of progress using CNCs in advanced materials applications are well underway and is becoming applicable on an industrial scale. Therefore, this review explores the current modification platforms and processes of nanocellulose directly as functional materials and as carriers/substrates of other functional materials for advanced materials applications. Niche functional attributes such as superhydrophobicity, barrier, electrical, and antimicrobial properties are reviewed due to the focus and significance of such attributes in industrial applications.
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38
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Wenten IG, Khoiruddin K, Aryanti PT, Victoria AV, Tanukusuma G. Membrane-based zero-sludge palm oil mill plant. REV CHEM ENG 2018. [DOI: 10.1515/revce-2017-0117] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Abstract
The palm oil industry is one of the most important agro-industries for tropical countries because of the unique properties and wide range of uses of palm oil for various end products. In a palm oil extraction process, a large quantity of water is required, of which half the quantity will end up as effluent. This palm oil mill effluent (POME) has an extremely high content of organic matter, which can cause severe pollution of waterways and other environmental problems. Disposal of this highly polluting effluent has become a major problem for the palm oil mills. Therefore, several methods have been proposed either to treat the POME so it could comply with environmental regulation while discharged or to recover water and other valuable components from the effluent. Membrane technology has emerged as a feasible alternative to conventional treatment in vegetable oil processing because of its attractive features such as low energy consumption, reduction in the number of processing steps, high separation efficiency, and improvement of the final product quality. In the case of POME treatment, an integrated membrane-based process promises efficient water recycling and total solid recovery from the effluent, thus eliminating the environmental problem. Recently, a novel concept combining oil–oil extraction and continuous filtration using a superhydrophobic membrane has been proposed to achieve a zero-sludge palm oil mill. In this concept, the huge wastewater effluent generated from the conventional process can be eliminated and the palm oil milling process simplified. Furthermore, the superhydrophobic membrane enables the production of high-purity palm oil. In this paper, we review the prospect of a zero-sludge palm oil mill concept and strategies to achieve the proposed concept. In addition, we also highlight the development of the superhydrophobic membrane and phytonutrient recovery.
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Affiliation(s)
- I. Gede Wenten
- Chemical Engineering Department , Institut Teknologi Bandung , Jl. Ganesha 10 , Bandung 40132 , Indonesia
- Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung , Jl. Ganesha 10 , Bandung 40132 , Indonesia
| | - K. Khoiruddin
- Chemical Engineering Department , Institut Teknologi Bandung , Jl. Ganesha 10 , Bandung 40132 , Indonesia
| | - Putu T.P. Aryanti
- Chemical Engineering Department , Universitas Jenderal Achmad Yani , PO BOX 148 , Cimahi , Indonesia
| | - Agnes V. Victoria
- Chemical Engineering Department , Institut Teknologi Bandung , Jl. Ganesha 10 , Bandung 40132 , Indonesia
| | - Grace Tanukusuma
- Chemical Engineering Department , Institut Teknologi Bandung , Jl. Ganesha 10 , Bandung 40132 , Indonesia
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39
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Seo D, Schrader AM, Chen SY, Kaufman Y, Cristiani TR, Page SH, Koenig PH, Gizaw Y, Lee DW, Israelachvili JN. Rates of cavity filling by liquids. Proc Natl Acad Sci U S A 2018; 115:8070-8075. [PMID: 30026197 PMCID: PMC6094138 DOI: 10.1073/pnas.1804437115] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Understanding the fundamental wetting behavior of liquids on surfaces with pores or cavities provides insights into the wetting phenomena associated with rough or patterned surfaces, such as skin and fabrics, as well as the development of everyday products such as ointments and paints, and industrial applications such as enhanced oil recovery and pitting during chemical mechanical polishing. We have studied, both experimentally and theoretically, the dynamics of the transitions from the unfilled/partially filled (Cassie-Baxter) wetting state to the fully filled (Wenzel) wetting state on intrinsically hydrophilic surfaces (intrinsic water contact angle <90°, where the Wenzel state is always the thermodynamically favorable state, while a temporary metastable Cassie-Baxter state can also exist) to determine the variables that control the rates of such transitions. We prepared silicon wafers with cylindrical cavities of different geometries and immersed them in bulk water. With bright-field and confocal fluorescence microscopy, we observed the details of, and the rates associated with, water penetration into the cavities from the bulk. We find that unconnected, reentrant cavities (i.e., cavities that open up below the surface) have the slowest cavity-filling rates, while connected or non-reentrant cavities undergo very rapid transitions. Using these unconnected, reentrant cavities, we identified the variables that affect cavity-filling rates: (i) the intrinsic contact angle, (ii) the concentration of dissolved air in the bulk water phase (i.e., aeration), (iii) the liquid volatility that determines the rate of capillary condensation inside the cavities, and (iv) the presence of surfactants.
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Affiliation(s)
- Dongjin Seo
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106
- Department of Chemical Engineering, Brigham Young University, Provo, UT 84606
| | - Alex M Schrader
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106
| | - Szu-Ying Chen
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106
| | - Yair Kaufman
- The Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, 84990 Midreshet Ben-Gurion, Israel
| | | | - Steven H Page
- Modeling and Simulation/Computational Chemistry, The Procter & Gamble Co., West Chester, OH 45069
| | - Peter H Koenig
- Modeling and Simulation/Computational Chemistry, The Procter & Gamble Co., West Chester, OH 45069
| | - Yonas Gizaw
- Winton Hill Business Center, The Procter & Gamble Co., Cincinnati, OH 45224
| | - Dong Woog Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, 689-798 Ulsan, Republic of Korea
| | - Jacob N Israelachvili
- Department of Chemical Engineering, University of California, Santa Barbara, CA 93106;
- Materials Department, University of California, Santa Barbara, CA 93106
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40
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Avrămescu RE, Ghica MV, Dinu-Pîrvu C, Prisada R, Popa L. Superhydrophobic Natural and Artificial Surfaces-A Structural Approach. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E866. [PMID: 29789488 PMCID: PMC5978243 DOI: 10.3390/ma11050866] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 05/18/2018] [Accepted: 05/18/2018] [Indexed: 12/12/2022]
Abstract
Since ancient times humans observed animal and plants features and tried to adapt them according to their own needs. Biomimetics represents the foundation of many inventions from various fields: From transportation devices (helicopter, airplane, submarine) and flying techniques, to sports' wear industry (swimming suits, scuba diving gear, Velcro closure system), bullet proof vests made from Kevlar etc. It is true that nature provides numerous noteworthy models (shark skin, spider web, lotus leaves), referring both to the plant and animal kingdom. This review paper summarizes a few of "nature's interventions" in human evolution, regarding understanding of surface wettability and development of innovative special surfaces. Empirical models are described in order to reveal the science behind special wettable surfaces (superhydrophobic /superhydrophilic). Materials and methods used in order to artificially obtain special wettable surfaces are described in correlation with plants' and animals' unique features. Emphasis is placed on joining superhydrophobic and superhydrophilic surfaces, with important applications in cell culturing, microorganism isolation/separation and molecule screening techniques. Bio-inspired wettability is presented as a constitutive part of traditional devices/systems, intended to improve their characteristics and extend performances.
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Affiliation(s)
- Roxana-Elena Avrămescu
- Department of Physical and Colloidal Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy "Carol Davila", Bucharest 020956, Romania.
| | - Mihaela Violeta Ghica
- Department of Physical and Colloidal Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy "Carol Davila", Bucharest 020956, Romania.
| | - Cristina Dinu-Pîrvu
- Department of Physical and Colloidal Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy "Carol Davila", Bucharest 020956, Romania.
| | - Răzvan Prisada
- Department of Physical and Colloidal Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy "Carol Davila", Bucharest 020956, Romania.
| | - Lăcrămioara Popa
- Department of Physical and Colloidal Chemistry, Faculty of Pharmacy, University of Medicine and Pharmacy "Carol Davila", Bucharest 020956, Romania.
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41
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Reverdy C, Belgacem N, Moghaddam MS, Sundin M, Swerin A, Bras J. One-step superhydrophobic coating using hydrophobized cellulose nanofibrils. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.12.059] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Wang S, Sha J, Wang W, Qin C, Li W, Qin C. Superhydrophobic surfaces generated by one-pot spray-coating of chitosan-based nanoparticles. Carbohydr Polym 2018; 195:39-44. [PMID: 29804991 DOI: 10.1016/j.carbpol.2018.04.068] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 04/04/2018] [Accepted: 04/17/2018] [Indexed: 11/16/2022]
Abstract
Superhydrophobic surfaces have attracted great attention due to their attractive properties. Biopolymer-based low-cost and environmentally-friendly superhydrophobic coatings with easy-to-perform fabrication methods are always desirable. Herein, we report superhydrophobic surfaces using a one-step spray-coating of chitosan-based nanoparticles. The particles were easily prepared by a nanoprecipitation strategy using synthesized organosoluble chitosan stearoyl ester (CSSE). The resulting particles had an average size of 165 ∼ 235 nm depending on the applied concentration. Subsequently, spray-coating of such particles onto silicon wafer generated a surface with a water contact angle of 155 ± 1°. SEM and AFM images exhibited a nano/microscaled roughness appeared on the coated surface. The superhydrophobic surfaces showed a stable superhydrophobic performance even after storage for 15 days, pH stability between pH 1 to pH 11 and thermal stability until a temperature no more than 50 °C. These properties would broaden the application fields of superhydrophobic surfaces as well as the chitosan itself.
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Affiliation(s)
- Shuangfei Wang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Jiulong Sha
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Wei Wang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Chengrong Qin
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China
| | - Wei Li
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, PR China; Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education/Shandong Province, Qilu University of Technology, Jinan, 250353, PR China.
| | - Caiqin Qin
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, PR China
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43
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Razavi SMR, Masoomi M, Bagheri R. Facile strategy toward developing a scalable, environmental friendly and self-cleaning superhydrophobic surface. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.01.038] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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44
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Subramanian R, Shanmugam K, Marappan S. Fabrication of robust superhydrophobic coatings using PTFE-MWCNT nanocomposite: Supercritical fluid processing. SURF INTERFACE ANAL 2018. [DOI: 10.1002/sia.6392] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Rajiv Subramanian
- Division of Nanotechnology, Department of Electronics and Communication Engineering; Periyar Maniammai Institute of Science & Technology; Thanjavur 613403 India
| | - Kumaran Shanmugam
- Department of Biotechnology; Periyar Maniammai Institute of Science & Technology; Thanjavur 613403 India
| | - Sathish Marappan
- Functional Materials Division; CSIR-Central Electrochemical Research Institute; Karaikudi 630003 India
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45
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Abstract
Abstract
Superhydrophobic membrane that is highly resistant to wetting by aqueous solution has gained great attention because of its potential to be applied in many emerging membrane processes such as membrane gas absorption (MGA) and membrane distillation (MD). Numerous approaches have been proposed to obtain membranes with superhydrophobic surface from materials with various degrees of hydrophobicity. This paper then reviews the progress in superhydrophobic membrane preparation and its separation properties. A brief description of superhydrophobicity is firstly presented. Preparation methods of the superhydrophobic membrane are subsequently reviewed, including direct processing method and surface modification of the existing membrane. Finally, the separation properties and challenges of superhydrophobic membranes are discussed. This article could provide an insight for further development of superhydrophobic membrane.
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46
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Preparation of Super-Hydrophobic Cotton Fabric with Crosslinkable Fluoropolymer. LECTURE NOTES IN ELECTRICAL ENGINEERING 2018. [DOI: 10.1007/978-981-10-7629-9_119] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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47
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Xia B, Yan L, Li Y, Zhang S, He M, Li H, Yan H, Jiang B. Preparation of silica coatings with continuously adjustable refractive indices and wettability properties via sol–gel method. RSC Adv 2018; 8:6091-6098. [PMID: 35539574 PMCID: PMC9078251 DOI: 10.1039/c7ra12817g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 01/29/2018] [Indexed: 11/21/2022] Open
Abstract
Silica coatings with continuously adjustable refractive indices and wettability properties were prepared through a sol–gel base-catalyzed process. Adjustment of the molar ratio of water (H2O) to tetraethylorthosilicate (TEOS) was utilized to change the hydrolysis degree of the precursors, and hence change the morphology of the silica particles. With the increase in the H2O/TEOS molar ratio, the morphology of the silica particles changed from a linear net-work structure to a bead-like structure and then to a granular particle structure. A particle growth mechanism was proposed and verified by characterization. As the H2O/TEOS molar ratio increased from 0.3 to 21.0, the refractive indices of the silica coatings increased from 1.132 to 1.328. Meanwhile, a varied H2O/TEOS molar ratio also modulated the surface wettability of the silica coatings. The static water angle of the silica coatings decreased from 145° to 6° by increasing the H2O/TEOS molar ratio from 0.3 to 21.0. Different hydrophilic and hydrophobic coatings could be obtained by simply controlling the H2O/TEOS molar ratio. Silica coatings with different refractive indices and hydrophobic (or hydrophilic) properties were obtained at different H2O/TEOS molar ratios. Silica coatings with continuously adjustable refractive indices and wettability properties were prepared through a sol–gel base-catalyzed process.![]()
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Affiliation(s)
- Bibo Xia
- Key Laboratory of Green Chemistry & Technology
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Lianghong Yan
- Research Center of Laser Fusion
- China Academy of Engineering Physical
- Mianyang
- P. R. China
| | - Yuanyang Li
- Key Laboratory of Green Chemistry & Technology
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Shuming Zhang
- Key Laboratory of Green Chemistry & Technology
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Meiying He
- Key Laboratory of Green Chemistry & Technology
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Hao Li
- Research Center of Laser Fusion
- China Academy of Engineering Physical
- Mianyang
- P. R. China
| | - Hongwei Yan
- Research Center of Laser Fusion
- China Academy of Engineering Physical
- Mianyang
- P. R. China
| | - Bo Jiang
- Key Laboratory of Green Chemistry & Technology
- College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
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Zalnezhad A, Javanbakht S, Darestani M, Shakeri A. Fabrication of superhydrophobic unplasticized poly(vinyl chloride)/nanosilica sheets using Taguchi design methodology. POLYM INT 2017. [DOI: 10.1002/pi.5305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Amir Zalnezhad
- School of Chemical Engineering, College of Engineering; University of Tehran; Tehran Iran
| | | | - Mariam Darestani
- School of Chemistry, Physics and Mechanical Engineering and Institute for Future Environments, Science and Engineering Faculty; Queensland University of Technology (QUT); Brisbane Queensland Australia
| | - Alireza Shakeri
- School of Chemistry, College of Science; University of Tehran; Tehran Iran
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Hu X, Tang C, He Z, Shao H, Xu K, Mei J, Lau WM. Highly Stretchable Superhydrophobic Composite Coating Based on Self-Adaptive Deformation of Hierarchical Structures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1602353. [PMID: 28306203 DOI: 10.1002/smll.201602353] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 01/16/2017] [Indexed: 06/06/2023]
Abstract
With the rapid development of stretchable electronics, functional textiles, and flexible sensors, water-proof protection materials are required to be built on various highly flexible substrates. However, maintaining the antiwetting of superhydrophobic surface under stretching is still a big challenge since the hierarchical structures at hybridized micro-nanoscales are easily damaged following large deformation of the substrates. This study reports a highly stretchable and mechanically stable superhydrophobic surface prepared by a facile spray coating of carbon black/polybutadiene elastomeric composite on a rubber substrate followed by thermal curing. The resulting composite coating can maintain its superhydrophobic property (water contact angle ≈170° and sliding angle <4°) at an extremely large stretching strain of up to 1000% and can withstand 1000 stretching-releasing cycles without losing its superhydrophobic property. Furthermore, the experimental observation and modeling analysis reveal that the stable superhydrophobic properties of the composite coating are attributed to the unique self-adaptive deformation ability of 3D hierarchical roughness of the composite coating, which delays the Cassie-Wenzel transition of surface wetting. In addition, it is first observed that the damaged coating can automatically recover its superhydrophobicity via a simple stretching treatment without incorporating additional hydrophobic materials.
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Affiliation(s)
- Xin Hu
- Chengdu Green Energy and Green Manufacturing Technology R&D Center, Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, 610200, China
| | - Changyu Tang
- Chengdu Green Energy and Green Manufacturing Technology R&D Center, Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, 610200, China
| | - Zhoukun He
- Chengdu Green Energy and Green Manufacturing Technology R&D Center, Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, 610200, China
| | - Hong Shao
- Chengdu Green Energy and Green Manufacturing Technology R&D Center, Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, 610200, China
| | - Keqin Xu
- Chengdu Green Energy and Green Manufacturing Technology R&D Center, Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, 610200, China
| | - Jun Mei
- Chengdu Green Energy and Green Manufacturing Technology R&D Center, Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, 610200, China
| | - Woon-Ming Lau
- Chengdu Green Energy and Green Manufacturing Technology R&D Center, Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, 610200, China
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Water and Oil Repellent Finishing of Textiles by UV Curing: Evaluation of the Influence of Scaled-Up Process Parameters. COATINGS 2017. [DOI: 10.3390/coatings7050060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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