1
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Bajpai S, Nemade PR. Silane and fluorine free facile hydrophobicization of water hyacinth biomass for oil-water separations. CHEMOSPHERE 2024; 358:142164. [PMID: 38685326 DOI: 10.1016/j.chemosphere.2024.142164] [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: 06/30/2023] [Revised: 11/21/2023] [Accepted: 04/25/2024] [Indexed: 05/02/2024]
Abstract
As the adverse effects of using plastics and perfluorinated alkyl substances become more apparent, there is a growing need for sustainable hydrophobic products. Cellulose and its derivatives are the most abundant and widely used polymers, and cellulose-based products have great potential in industries where plastics and other hydrophobic polymers are used, such as stain-resistant fabrics, food packaging, and oil-water separation applications. In this study, we extracted cellulose from water hyacinth (WH) biomass, known for its negative environmental impact, and converted it into hydrophobic cellulose. This addresses the issue of managing WH waste and creating an environmentally friendly hydrophobic material. Initially, aldehyde groups were introduced through oxidation with periodate, followed by direct octadecyl amine (ODA) grafting onto dialdehyde cellulose (DAC) via a Schiff base condensation. The resulting ODA modified cellulose (ODA-C) was dispersed in ethanol and used to coat various materials, including cotton fabric, cellulose filter paper, and packaging paper. The modified materials showed excellent hydrophobicity as measured by their water contact angles (WCAs), and the application of the coating was demonstrated for oil-water separation, stain-resistant hydrophobic fabric, and paper-based packaging materials. FTIR, XRD, and WCA analysis confirmed the successful modification of cellulose. A high separation efficiency of 99% was achieved for diesel/water separation using modified filter paper (MoFP), under gravity. On application of the coating, cotton fabric became hydrophobic and resisted staining from dye, and paper-based packaging materials became more robust by becoming water-resistant. Overall, the facile synthesis, low cost, high efficiency, and use of environmentally friendly sustainable materials make this a promising strategy for hydrophobically modifying surfaces for a wide range of applications while reducing the menace of water hyacinth.
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Affiliation(s)
- Shruti Bajpai
- Institute of Chemical Technology Mumbai, Marathwada Campus, Jalna, 431 203, India
| | - Parag R Nemade
- Institute of Chemical Technology Mumbai, Marathwada Campus, Jalna, 431 203, India; Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, 400 019, India.
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2
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Khademsameni H, Jafari R, Allahdini A, Momen G. Regenerative Superhydrophobic Coatings for Enhanced Performance and Durability of High-Voltage Electrical Insulators in Cold Climates. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1622. [PMID: 38612138 PMCID: PMC11012825 DOI: 10.3390/ma17071622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024]
Abstract
Superhydrophobic coatings can be a suitable solution for protecting vulnerable electrical infrastructures in regions with severe meteorological conditions. Regenerative superhydrophobicity, the ability to regain superhydrophobicity after being compromised or degraded, could address the issue of the low durability of these coatings. In this study, we fabricated a superhydrophobic coating comprising hydrophobic aerogel microparticles and polydimethylsiloxane (PDMS)-modified silica nanoparticles within a PDMS matrix containing trifluoropropyl POSS (F-POSS) and XIAMETER PMX-series silicone oil as superhydrophobicity-regenerating agents. The fabricated coating exhibited a static contact angle of 169.5° and a contact angle hysteresis of 6°. This coating was capable of regaining its superhydrophobicity after various pH immersion and plasma deterioration tests. The developed coating demonstrated ice adhesion as low as 71.2 kPa, which remained relatively unchanged even after several icing/de-icing cycles. Furthermore, the coating exhibited a higher flashover voltage than the reference samples and maintained a minimal drop in flashover voltage after consecutive testing cycles. Given this performance, this developed coating can be an ideal choice for enhancing the lifespan of electrical insulators.
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Affiliation(s)
| | - Reza Jafari
- Department of Applied Sciences, University of Quebec in Chicoutimi (UQAC), 555 Boul de l’Université, Chicoutimi, QC G7H 2B1, Canada; (H.K.); (A.A.); (G.M.)
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3
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Ishak A, Sonnier R, Otazaghine B, Longuet C. A One-Step Approach for a Durable and Highly Hydrophobic Coating for Flax Fabrics for Self-Cleaning Application. Molecules 2024; 29:829. [PMID: 38398582 PMCID: PMC10891639 DOI: 10.3390/molecules29040829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 01/23/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024] Open
Abstract
Highly hydrophobic flax fabrics with durable properties were prepared using the "dip-coating" method for self-cleaning application. Flax fabrics were coated with a polysiloxane coating via a hydrosilylation reaction with a Karstedt catalyst at room temperature. The coated fabrics displayed highly and durable hydrophobic properties (contact angle and sliding angle of about 145° and 23°, respectively) with good self-cleaning ability for certain pollutants and excellent durability. Moreover, the influence of the coating process on the mechanical properties of fabrics was investigated. A decrease in E modulus and an increase in tensile stress at maximum force and elongation at maximum force has been observed. Furthermore, this influence of the coating process can be easily controlled by adjusting the proportion of curing agent in the treatment solution.
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Affiliation(s)
| | | | - Belkacem Otazaghine
- PCH, IMT–Mines Alès, 6, Avenue de Clavières, 30100 Alès, France; (A.I.); (R.S.); (C.L.)
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4
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Voo WX, Chong WC, Teoh HC, Lau WJ, Chan YJ, Chung YT. Facile Preparation of Durable and Eco-Friendly Superhydrophobic Filter with Self-Healing Ability for Efficient Oil/Water Separation. MEMBRANES 2023; 13:793. [PMID: 37755215 PMCID: PMC10534750 DOI: 10.3390/membranes13090793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/23/2023] [Accepted: 08/26/2023] [Indexed: 09/28/2023]
Abstract
The superhydrophobic feature is highly desirable for oil/water separation (OWS) operation to achieve excellent separation efficiency. However, using hazardous materials in fabricating superhydrophobic surfaces is always the main concern. Herein, superhydrophobic filters were prepared via an eco-friendly approach by anchoring silica particles (SiO2) onto the cotton fabric surface, followed by surface coating using natural material-myristic acid via a dip coating method. Tetraethyl orthosilicate (TEOS) was used in the synthesis of SiO2 particles from the silica sol. In addition, the impact of the drying temperature on the wettability of the superhydrophobic filter was investigated. Moreover, the pristine cotton fabric and as-prepared superhydrophobic cotton filters were characterised based on Fourier-transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM-EDX) and contact angle (CA) measurement. The superhydrophobic cotton filter was used to perform OWS using an oil-water mixture containing either chloroform, hexane, toluene, xylene or dichloroethane. The separation efficiency of the OWS using the superhydrophobic filter was as high as 99.9%. Moreover, the superhydrophobic fabric filter also demonstrated excellent durability, chemical stability, self-healing ability and reusability.
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Affiliation(s)
- Wei Xin Voo
- Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Jalan Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia; (W.X.V.); (H.C.T.)
| | - Woon Chan Chong
- Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Jalan Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia; (W.X.V.); (H.C.T.)
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Sungai Long Campus, Jalan Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia
| | - Hui Chieh Teoh
- Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Jalan Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia; (W.X.V.); (H.C.T.)
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Sungai Long Campus, Jalan Sungai Long, Cheras, Kajang 43000, Selangor, Malaysia
| | - Woei Jye Lau
- Advanced Membrane Technology Research Centre (AMTEC), Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, Johor Bahru 81310, Johor, Malaysia;
| | - Yi Jing Chan
- Department of Chemical and Environmental Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor, Malaysia;
| | - Ying Tao Chung
- Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology & Built Environment, UCSI University Kuala Lumpur Campus, Jalan Mandarina Damai 1, Cheras, Kuala Lumpur 56000, Malaysia;
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5
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Xue Q, Wu J, Lv Z, Lei Y, Liu X, Huang Y. Photothermal Superhydrophobic Chitosan-Based Cotton Fabric for Rapid Deicing and Oil/Water Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37389997 DOI: 10.1021/acs.langmuir.3c01144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2023]
Abstract
Superhydrophobic cotton fabrics have a lot of potential for use in practical settings. The majority of superhydrophobic cotton fabrics, however, only serve one purpose and are made from fluoride or silane chemicals. Therefore, it remains a challenge to develop multifunctional superhydrophobic cotton fabrics using environmentally friendly raw materials. In this study, chitosan (CS), amino carbon nanotubes (ACNTs), and octadecylamine (ODA) were used as raw materials to create CS-ACNTs-ODA photothermal superhydrophobic cotton fabrics. The cotton fabric that was created showed a remarkable superhydrophobic property with a water contact angle of 160.3°. The surface temperature of CS-ACNTs-ODA cotton fabric can rise by up to 70 °C when exposed to simulated sunlight, demonstrating the fabric's remarkable photothermal capabilities. Additionally, the coated cotton fabric is capable of quick deicing. Ice particles (10 μL) melted and began to roll down in 180 s under the light of "1 sun". The cotton fabric exhibits good durability and adaptability in terms of mechanical qualities and washing tests. Moreover, the CS-ACNTs-ODA cotton fabric displays a separation efficacy of more than 91% when used to treat various oil and water mixtures. We also impregnate the coating on polyurethane sponges, which can quickly absorb and separate oil and water mixtures.
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Affiliation(s)
- Qianwen Xue
- Hubei Key Laboratory of Coal Conversion and New Carbon Material, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Jiangqin Wu
- Hubei Key Laboratory of Coal Conversion and New Carbon Material, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Zaosheng Lv
- Hubei Key Laboratory of Coal Conversion and New Carbon Material, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Yang Lei
- Hubei Key Laboratory of Coal Conversion and New Carbon Material, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Xuegang Liu
- Jingzhou Conservation Center, Jingzhou 434020, China
| | - Yanfen Huang
- Hubei Key Laboratory of Coal Conversion and New Carbon Material, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
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6
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Wei X, Niu X. Recent Advances in Superhydrophobic Surfaces and Applications on Wood. Polymers (Basel) 2023; 15:polym15071682. [PMID: 37050296 PMCID: PMC10097333 DOI: 10.3390/polym15071682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/25/2023] [Accepted: 03/26/2023] [Indexed: 03/30/2023] Open
Abstract
Superhydrophobic substances were favored in wood protection. Superhydrophobic treatment of wood is of great significance for improving the service life of wood and expanding its application fields, such as improving dimensional stability, durability, UV stability, and reducing wetting. The superhydrophobic phenomenon is attributed to the interaction of micro/nano hierarchical structure and low surface energy substances of the wood surface. This is the common method for obtaining superhydrophobic wood. The article introduces the common preparation methods of superhydrophobic wood material coatings and their mechanisms. These techniques include lithography, sol–gel methods, graft copolymerization, chemical vapor deposition, etc. The latest research progress of superhydrophobic wood material coatings application at domestic and overseas is reviewed, and the current status of superhydrophobic coating application in wood materials and construction is summarized. Finally, superhydrophobic on wood in the field of applied research is presented, and the development trend in the field of functional improvement of wood is foreseen.
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7
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Color-variable dual-dyed photodynamic antimicrobial polyethylene terephthalate (PET)/cotton blended fabrics. Photochem Photobiol Sci 2023:10.1007/s43630-023-00398-1. [PMID: 36894800 PMCID: PMC9998264 DOI: 10.1007/s43630-023-00398-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 02/22/2023] [Indexed: 03/11/2023]
Abstract
The urgent demand for scalable, potent, color variable, and comfortable antimicrobial textiles as personal protection equipment (PPE) to help reduce infection transmission in hospitals and healthcare facilities has significantly increased since the start of the COVID-19 pandemic. Here, we explored photodynamic antimicrobial polyethylene terephthalate/cotton (TC) blended fabrics comprised of photosensitizer-conjugated cotton fibers and polyethylene terephthalate (PET) fibers dyed with disperse dyes. A small library of TC blended fabrics was constructed wherein the PET fibers were embedded with traditional disperse dyes dominating the fabric color, thereby enabling variable color expression, while the cotton fibers were covalently coupled with the photosensitizer thionine acetate as the microbicidal agent. Physical (SEM, CLSM, TGA, XPS and mechanical strength) and colorimetric (K/S and CIELab values) characterization methods were employed to investigate the resultant fabrics, and photooxidation studies with DPBF demonstrated the ability of these materials to generate reactive oxygen species (i.e., singlet oxygen) upon visible light illumination. The best results demonstrated a photodynamic inactivation of 99.985% (~ 3.82 log unit reduction, P = 0.0021) against Gram-positive S. aureus, and detection limit inactivation (99.99%, 4 log unit reduction, P ≤ 0.0001) against Gram-negative E. coli upon illumination with visible light (60 min; ~ 300 mW/cm2; λ ≥ 420 nm). Enveloped human coronavirus 229E showed a photodynamic susceptibility of ~ 99.99% inactivation after 60 min illumination (400-700 nm, 65 ± 5 mW/cm2). The presence of the disperse dyes on the fabrics showed no significant effects on the aPDI results, and furthermore, appeared to provide the photosensitizer with some measure of protection from photobleaching, thus improving the photostability of the dual-dyed fabrics. Taken together, these results suggest the feasibility of low cost, scalable and color variable thionine-conjugated TC blended fabrics as potent self-disinfecting textiles.
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8
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Nguyen NB, Ly NH, Tran HN, Son SJ, Joo SW, Vasseghian Y, Osman SM, Luque R. Transparent Oil-Water Separating Spiky SiO 2 Nanoparticle Supramolecular Polymer Superhydrophobic Coatings. SMALL METHODS 2023; 7:e2201257. [PMID: 36683199 DOI: 10.1002/smtd.202201257] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/30/2022] [Indexed: 06/17/2023]
Abstract
A potential application of spiky SiO2 nanoparticles (NPs) with tubular and rough surfaces is investigated as superhydrophobic coatings, for their unique transparent, fluorinate-free, and environmentally friendly properties. This study demonstrates a facile method for the successful fabrication of superhydrophobic coatings and SiO2 @polydimethylsiloxane (PDMS) using spiky SiO2 NPs, N-coordinated boroxines, and PDMS. Combined with spray coating technology, this method of superhydrophobic coating can be simply applied to both hydrophilic and hydrophobic surfaces, including wood, fabric, glass, metal, sponge, and paper. The nanocomposite coating on the glass surface showed both excellent superhydrophobicity and high transparency, with a contact angle of 165.4 ± 1.0° and 96.93% transmittance at 550 nm, respectively. SiO2 @PDMS-modified glass substrate is found to be resilient to UV irradiation, water, and high temperature treatments at ambient conditions. Experimental data demonstrated that the simple but effective combination of N-boroxine-PDMS and spiky SiO2 NPs produces a layered coating material that exhibits many good integrated surface properties, including stability, transparency, superhydrophobicity, and oil-water separation.
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Affiliation(s)
| | - Nguyên Hoàng Ly
- Department of Chemistry, Gachon University, Seongnam, 13120, South Korea
| | - Huynh Nhu Tran
- Department of Chemistry, Soongsil University, Seoul, 06978, South Korea
| | - Sang Jun Son
- Department of Chemistry, Gachon University, Seongnam, 13120, South Korea
| | - Sang-Woo Joo
- Department of Chemistry, Soongsil University, Seoul, 06978, South Korea
| | - Yasser Vasseghian
- Department of Chemistry, Soongsil University, Seoul, 06978, South Korea
- University Centre for Research & Development, Department of Mechanical Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India
- Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - Sameh M Osman
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Rafael Luque
- Departamento de Química Orgánica, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie (C-3), Cordoba, 14014, Spain
- Peoples Friendship University of Russia (RUDN University), Moscow, 117198, Russian Federation
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Zhou H, Niu H, Wang H, Lin T. Self-Healing Superwetting Surfaces, Their Fabrications, and Properties. Chem Rev 2023; 123:663-700. [PMID: 36537354 DOI: 10.1021/acs.chemrev.2c00486] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The research on superwetting surfaces with a self-healing function against various damages has progressed rapidly in the recent decade. They are expected to be an effective approach to increasing the durability and application robustness of superwetting materials. Various methods and material systems have been developed to prepare self-healing superwetting surfaces, some of which mimic natural superwetting surfaces. However, they still face challenges, such as being workable only for specific damages, external stimulation to trigger the healing process, and poor self-healing ability in the water, marine, or biological systems. There is a lack of fundamental understanding as well. This article comprehensively reviews self-healing superwetting surfaces, including their fabrication strategies, essential rules for materials design, and self-healing properties. Self-healing triggered by different external stimuli is summarized. The potential applications of self-healing superwetting surfaces are highlighted. This article consists of four main sections: (1) the functional surfaces with various superwetting properties, (2) natural self-healing superwetting surfaces (i.e., plants, insects, and creatures) and their healing mechanism, (3) recent research development in various self-healing superwetting surfaces, their preparation, wetting properties in the air or liquid media, and healing mechanism, and (4) the prospects including existing challenges, our views and potential solutions to the challenges, and future research directions.
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Affiliation(s)
- Hua Zhou
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Centre for Eco-textiles of Shandong Province, Qingdao University, Qingdao 266071, China
| | - Haitao Niu
- College of Textiles & Clothing, State Key Laboratory for Biofibers and Eco-textiles, Collaborative Innovation Centre for Eco-textiles of Shandong Province, Qingdao University, Qingdao 266071, China
| | - Hongxia Wang
- Institute for Frontier Materials, Deakin University, Geelong Victoria 3216, Australia.,Institute for Nanofiber Intelligent Manufacture and Applications, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Tong Lin
- Institute for Nanofiber Intelligent Manufacture and Applications, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China.,State Key Laboratory of Separation Membranes and Membrane Processes, School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
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10
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Shuib RK, Mohd Nizam NH, Abd Aziz A. A facile approach to fabricate room temperature intrinsic self-healing fabrics. JOURNAL OF INDUSTRIAL TEXTILES 2023; 53:152808372311617. [DOI: 10.1177/15280837231161765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Self-healing fabrics have garnered a lot of attention due to their recovering functionality upon damage. This work describes a facile technique for developing a novel self-healing coating with the goal of producing autonomous intrinsic self-healing fabrics that can recover from damage at room temperature without the use of external stimuli. The coating was developed using natural rubber latex (NRL) and consisted of a dynamic reversible metal thiolate ionic network. The formation of the reversible ionic network was assessed by Differential Scanning Calorimetry (DSC), Ultraviolet-visible spectroscopy (UV-vis), Fourier Transform Infrared (FTIR) and zeta potential analysis. Scanning electron microscope (SEM) images revealed that the coating impregnated the fibres of the fabric and improved their structural integrity. The morphology of the punctured area revealed that intermolecular diffusion had occurred during the recovery and the sample had completely healed. The results also showed that the tensile strength, tear strength and puncture strength of the fabric achieved 100% healing efficiency when the damaged fabrics were brought into contact with each other and allowed to be healed at room temperature. This technology is expected to open up a new avenue in the textile industry.
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Affiliation(s)
- Raa Khimi Shuib
- School of Materials and Mineral Resources Engineering, USM Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia
| | - Nuraina Hanim Mohd Nizam
- School of Materials and Mineral Resources Engineering, USM Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Pinang, Malaysia
| | - Azniwati Abd Aziz
- School of Industrial Technology, Universiti Sains Malaysia, Minden 11800, Penang, Malaysia
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Dinesh, Wang H, Kim J. Citric Acid-Crosslinked Highly Porous Cellulose Nanofiber Foam Prepared by an Environment-Friendly and Simple Process. GLOBAL CHALLENGES (HOBOKEN, NJ) 2022; 6:2200090. [PMID: 36381129 PMCID: PMC9638428 DOI: 10.1002/gch2.202200090] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/13/2022] [Indexed: 09/04/2023]
Abstract
In this study, cellulose nanofiber (CNF) foams are prepared by an environment-friendly, time-saving, and simple process using bio-based citric acid (CA) as a green crosslinking agent. Scanning electron microscope and Fourier transform infrared spectroscopy examine the foam morphology and confirm the crosslinking. The prepared foam shows a very high porosity (>98%) with a low density (24.02 mg cm-3) with more than 200% improvement in mechanical strength and modulus compared to the neat CNF foam. In addition, the inclusion of CA into CNF improves thermal stability, antioxidant activity, and hydrophobicity. Furthermore, the prepared foam demonstrates a good sound absorption behavior, suitable for environment-friendly and lightweight sound-absorbing foam.
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Affiliation(s)
- Dinesh
- Creative Research Center for Nanocellulose Future CompositesDepartment of Mechanical EngineeringInha University100 Inha‐ro, Michuhol‐guIncheon22212South Korea
| | - Hanbin Wang
- Creative Research Center for Nanocellulose Future CompositesDepartment of Mechanical EngineeringInha University100 Inha‐ro, Michuhol‐guIncheon22212South Korea
| | - Jaehwan Kim
- Creative Research Center for Nanocellulose Future CompositesDepartment of Mechanical EngineeringInha University100 Inha‐ro, Michuhol‐guIncheon22212South Korea
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12
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Preparation of robust and self-healing superamphiphobic cotton fabrics based on modified silica aerogel particles. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Li B, Xue S, Mu P, Li J. Robust Self-Healing Graphene Oxide-Based Superhydrophobic Coatings for Efficient Corrosion Protection of Magnesium Alloys. ACS APPLIED MATERIALS & INTERFACES 2022; 14:30192-30204. [PMID: 35731779 DOI: 10.1021/acsami.2c06447] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A self-healing coating possesses a broad application prospect in the metal corrosion protection area due to its pleasurable performance. By far, despite a great deal of research studies that have been reported in this field, it is still a challenge to construct an intrinsic self-healing surface that can repair a damaged structure and restore superhydrophobicity simultaneously. Herein, a self-healing superhydrophobic coating was fabricated by combining polydopamine (PDA)-functionalized Cu2+-doped graphene oxide (GO), octadecylamine (ODA), and polydimethylsiloxane (PDMS), which can recover the superhydrophobicity and microstructure of the coating after chemical/physical damage. The as-prepared self-healing coating displayed excellent liquid repellency with a water contact angle of 158.2 ± 2° and a sliding angle of 4 ± 1°, which endowed the Mg alloy with excellent anticorrosion performance. Once the coating is scratched, the local damaged structure will be automatically repaired through the chelation of catechol and Cu2+. Also, the superhydrophobicity of the coating can be rapidly restored under 1-sun irradiation even after being etched by O2 plasma. Furthermore, the as-fabricated self-healing coating still exhibited excellent corrosion protection against a magnesium alloy after immersion in 3.5 wt % NaCl solution for 30 days, which was attributed to the efficient repair of defects in GO by PDA through π-π interactions and the inherent chemical inertia of PDMS. Moreover, the as-fabricated self-healing coating also exhibited favorable mechanical stability, chemical durability, and weather resistance. This study paves a fresh insight into the design of robust self-healing coatings with huge application potential.
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Affiliation(s)
- Bingfeng Li
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Shuaiya Xue
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Peng Mu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
| | - Jian Li
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China
- School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, PR China
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14
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Zhao X, Duan Y. Improve the mechanical durability of superhydrophobic/superamphiphobic coating through multiple cross-linked mesh structure. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Wang JH, Xue CH, Liu BY, Guo XJ, Hu LC, Wang HD, Deng FQ. A Superhydrophobic Dual-Mode Film for Energy-Free Radiative Cooling and Solar Heating. ACS OMEGA 2022; 7:15247-15257. [PMID: 35572754 PMCID: PMC9089744 DOI: 10.1021/acsomega.2c01947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/07/2022] [Indexed: 06/15/2023]
Abstract
Traditional electric cooling in summer and coal heating in winter consume a huge amount of energy and lead to a greenhouse effect. Herein, we developed an energy-free dual-mode superhydrophobic film, which consists of a white side with porous coating of styrene-ethylene-butylene-styrene/SiO2 for radiative cooling and a black side with nanocomposite coating of carbon nanotubes/polydimethylsiloxane for solar heating. In the cooling mode with the white side, the film achieved a high sunlight reflection of 94% and a strong long-wave infrared emission of 92% in the range of 8-13 μm to contribute to a temperature drop of ∼11 °C. In the heating mode with the black side, the film achieved a high solar absorption of 98% to induce heating to raise the air temperature beneath by ΔT of ∼35.6 °C. Importantly, both sides of the film are superhydrophobic with a contact angle over 165° and a sliding angle near 0°, showing typical self-cleaning effects, which defend the surfaces from outdoor contamination, thus conducive to long-term cooling and heating. This dual-mode film shows great potential in outdoor applications as coverings for both cooling in hot summer and heating in winter without an energy input.
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Affiliation(s)
- Jiang-He Wang
- College
of Chemistry and Chemical Engineering, Shaanxi
University of Science and Technology, Xi’an 710021, China
| | - Chao-Hua Xue
- College
of Chemistry and Chemical Engineering, Shaanxi
University of Science and Technology, Xi’an 710021, China
- College
of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Bing-Ying Liu
- College
of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Xiao-Jing Guo
- College
of Materials Science and Engineering, Shaanxi
University of Science and Technology, Xi’an 710021, China
| | - Li-Cui Hu
- College
of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
| | - Hui-Di Wang
- College
of Materials Science and Engineering, Shaanxi
University of Science and Technology, Xi’an 710021, China
| | - Fu-Quan Deng
- College
of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China
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16
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Song R, Zhang N, Dong H, Wang P, Ding H, Wang J, Li S. Three-dimensional biomimetic superhydrophobic nickel sponge without chemical modifications for efficient oil/water separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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17
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Surface Modification of Polyester/Viscose Fabric with Silica Hydrosol and Amino-Functionalized Polydimethylsiloxane for the Preparation of a Fluorine-Free Superhydrophobic and Breathable Textile. COATINGS 2022. [DOI: 10.3390/coatings12030398] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
This work attempted to fabricate superhydrophobic fabric via a simple immersion technique. Textile fabrics were coated with silica nanoparticles prepared from tetraethoxysilane (TEOS) to obtain sufficient roughness with hydrophobic surface chemistry. Then, the coated fabrics were treated with polydimethylsiloxane (PDMS) and aminopropyltriethoxysilane (APTES) to reduce the surface energy. The effects of the PDMS concentration on the surface morphology and superhydrophobicity of as-prepared fabric were investigated. The morphology and the composition of superhydrophobic fabric were characterized by scanning electron microscopy (SEM), energy dispersive X-ray (EDS), and Fourier transform infrared (FTIR) spectroscopy. The results revealed the formation of spherical silica nanoparticles with an average particle size of 250 nm throughout the fabric surface. The possible interactions between silica nanoparticles and APTES, as well as the fabrics, were elucidated. Investigating the hydrophobicity of fabrics via water contact angle (WCA) measurement showed that the treated fabric exhibits excellent water repellency with a water contact angle as high as 151° and a very low water sliding angle. It was also found that the treated fabric maintained most of its hydrophobicity against repeated washing, as the WCA of superhydrophobic fabrics decreased to 141° after 25 repeated washing cycles. The comfort properties of the obtained superhydrophobic fabrics in terms of air permeability and bending length did not reveal any significant changes.
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18
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Wang J, Zhang Y, Ding J, Xu Z, Zhang J, He Q. Preparation strategy and evaluation method of durable superhydrophobic rubber composites. Adv Colloid Interface Sci 2022; 299:102549. [PMID: 34839925 DOI: 10.1016/j.cis.2021.102549] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/06/2021] [Accepted: 10/17/2021] [Indexed: 01/29/2023]
Abstract
Superhydrophobic rubber composites have broad application prospects in national defense, industrial and agricultural production and daily life due to their special surface wettability. However, its poor durability at present seriously limits its practical application. Microstructure and low surface energy substances are the decisive factors to realize superhydrophobic surface. Therefore, three strategies to improve the durability of superhydrophobic surface were put forward, including improving the mechanical strength of microstructure, enhancing the adhesion between coating and substrate, and constructing self-repairing surface. On this basis, the preparation techniques of durable superhydrophobic rubber composites were summarized, and then the evaluation methods of durability of superhydrophobic rubber composites were introduced in detail from mechanical durability and chemical durability.
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19
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Zhou W, Ma Y, He Q. Investigation of self‐cleaning and bouncing properties of superhydrophobic aluminum nitride/silicone rubber. J Appl Polym Sci 2021. [DOI: 10.1002/app.51990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei Zhou
- School of Quality and Technical Supervision Hebei University Baoding China
| | - Yongwei Ma
- School of Quality and Technical Supervision Hebei University Baoding China
- Key Laboratory of Aeronautical Special Rubber Anyang Institute of Technology Anyang China
| | - Qiang He
- Key Laboratory of Aeronautical Special Rubber Anyang Institute of Technology Anyang China
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20
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Xu M, Wang T. Postsynthetic Modification of Mixed‐Ligand Metal‐Organic Gels for Adsorbing Nonpolar Organic Solvents. ChemistrySelect 2021. [DOI: 10.1002/slct.202102848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Meng‐Ying Xu
- National Museum of China Beijing 100006 China
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China
| | - Tian‐Xiong Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China
- University of Chinese Academy of Science Beijing 100049 China
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21
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Liu X, Gu Y, Mi T, Zhao Y, Wang X, Zhang X. Preparation of Superhydrophobic Fabric Based on the SiO
2
@PDFMA Nanocomposites by an Emulsion Graft Polymerization and a Hot‐Pressing Process. ChemistrySelect 2021. [DOI: 10.1002/slct.202100848] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiaoli Liu
- School of Chemical Engineering and Technology Hebei University of Technology Tianjin 3003130 China
| | - Youcai Gu
- Tianjin Ultrafine Technology Co. Ltd. Tianjin 3003130 China
| | - Tengfei Mi
- Tianjin Ultrafine Technology Co. Ltd. Tianjin 3003130 China
| | - Yuehua Zhao
- School of Chemical Engineering and Technology Hebei University of Technology Tianjin 3003130 China
| | - Xiaomei Wang
- School of Chemical Engineering and Technology Hebei University of Technology Tianjin 3003130 China
| | - Xu Zhang
- School of Chemical Engineering and Technology Hebei University of Technology Tianjin 3003130 China
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22
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Mehanna YA, Sadler E, Upton RL, Kempchinsky AG, Lu Y, Crick CR. The challenges, achievements and applications of submersible superhydrophobic materials. Chem Soc Rev 2021; 50:6569-6612. [PMID: 33889879 DOI: 10.1039/d0cs01056a] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Superhydrophobic materials have been widely reported throughout the scientific literature. Their properties originate from a highly rough morphology and inherently water repellent surface chemistry. Despite promising an array of functionalities, these materials have seen limited commercial development. This could be attributed to many factors, like material compatibility, low physical resilience, scaling-up complications, etc. In applications where persistent water contact is required, another limitation arises as a major concern, which is the stability of the air layer trapped at the surface when submerged or impacted by water. This review is aimed at examining the diverse array of research focused on monitoring/improving air layer stability, and highlighting the most successful approaches. The reported complexity of monitoring and enhancing air layer stability, in conjunction with the variety of approaches adopted, results in an assortment of suggested routes to achieving success. The review is addressing the challenge of finding a balance between maximising water repulsion and incorporating structures that protect air pockets from removal, along with challenges related to the variant approaches to testing air-layer stability across the research field, and the gap between the achieved progress and the required performance in real-life applications.
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Affiliation(s)
- Yasmin A Mehanna
- Materials Innovation Factory, Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK
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23
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Shan Y, Liang S, Mao X, Lu J, Liu L, Huang Y, Yang J. Stretchable dual cross-linked silicon elastomer with a superhydrophobic surface and fast triple self-healing ability at room temperature. SOFT MATTER 2021; 17:4643-4652. [PMID: 33949426 DOI: 10.1039/d0sm02175j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Stretchable elastomers with superhydrophobic surfaces have potential applications in wearable electronics. However, various types of damage inevitably occur on these elastomers in actual application, resulting in the deterioration of the superhydrophobic properties. In this work, superhydrophobic elastomers (HB-imine-BZn-PDMS), was fabricated by employing a dual-layered structure. The bottom layer was a silicon elastomer (imine-BZn-PDMS) with an imine/coordination dual cross-linked structure and room temperature self-healing efficiency of 94%. The top layer was imine-BZn-PDMS/silica nanocomposites to provide superhydrophobic properties. The HB-imine-BZn-PDMS elastomer exhibited fast triple self-healing ability at room temperature toward surface oxidation/decomposition, ruptures, or pinholes, and high durability under abrasion and stretching. The dual dynamic bonds of imine-BZn-PDMS enabled fast recovery of superhydrophobicity in 20 min at room temperature via bond exchange, after generating pinholes across the elastomer. Following surface chemical damage, the HB-imine-BZn-PDMS elastomer also exhibited fast (40 min) room-temperature self-healing ability, which is superior to that of most current self-healing superhydrophobic materials.
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Affiliation(s)
- Yuxing Shan
- State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Shuai Liang
- School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China.
| | - Xiangkai Mao
- School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China.
| | - Jie Lu
- School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China.
| | - Lili Liu
- School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China.
| | - Yawen Huang
- State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
| | - Junxiao Yang
- State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China.
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24
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Goharshenas Moghadam S, Parsimehr H, Ehsani A. Multifunctional superhydrophobic surfaces. Adv Colloid Interface Sci 2021; 290:102397. [PMID: 33706199 DOI: 10.1016/j.cis.2021.102397] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 02/25/2021] [Accepted: 02/26/2021] [Indexed: 10/22/2022]
Abstract
Surface wetting has a significant influence on the performance and applications of the materials. The superhydrophobic surfaces have water repellency due to low surface energy chemistry and micro/nanostructure roughness. The amazing applications of superhydrophobic surfaces (SHSs) lead to increase attention to superhydrophobicity in recent decades. The SHSs have been fabricated through chemical and physical methods. The further properties of SHSs as functions such as self-healing, anti-bacterial, anti-fouling, and stimuli-responsiveness are considered as the functions of the SHSs. The Multifunctional SHSs (MSHSs) that contained superhydrophobicity and at least two other properties as the next generation of the SHSs are swiftly developed in recent years. The multiple applications of the MSHSs are originated from specific morphology and functional groups of the MSHSs. The functions (properties) of the MSHSs are categorized into three groups including self-cleaning properties, restrictive properties, and smart properties. Designing and keeping surface structure plays a significant role in fabricating durable MSHSs. However, there is a big challenge to design and also scale up mechanochemical durable MSHSs. Based on state-of-the-art investigations, establishing a self-healing function can improve the durability of SHSs. The durable self-healing MSHSs can enhance the performance of the other functions and lifespan of the surface. In this review, all surface structures and superhydrophobic agents in MSHSs are investigated. The perspective of the MSHSs determined the next generation of the MSHSs have several significant parameters including durability, stability, more functions, more responsiveness, and environmentally friendly features for fabricating the large-scale MSHSs and enhancing their applications.
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25
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Liu G, Xia H, Zhang W, Lang L, Geng H, Song L, Niu Y. Photocatalytic Superamphiphobic Coatings and the Effect of Surface Microstructures on Superamphiphobicity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:12509-12520. [PMID: 33653025 DOI: 10.1021/acsami.0c22982] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In recent years, superamphiphobic coatings have been widely used in industrial transportation and environmental treatments because of their unique liquid repellency. In this study, WO3-TiO2 nanorods/SiO2 were used as the constructor of surface microstructures, and 1H,1H,2H,2H-perfluorodecyltriethoxysilane was used as the provider of low surface energy, and a photocatalytic superamphiphobic coating (FTS coating) was prepared. The microstructure and chemical composition of the coating was characterized by scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The coating exhibited excellent photocatalytic activity toward degradation methyl red and nitric oxide (NO), and the degradation efficiency to NO reached 47.8%. Also, the advanced contact angle and the hysteresis angle of water, glycol, glycerol, and olive oil was used to evaluate the superamphiphobicity. After 7 days of ultraviolet (UV) aging, five cycles of airbrush flushing and 48 h of immersion in acid, salt, and alkali solutions, the FTS coating still exhibits excellent amphiphobicity, which lays a foundation for its large-scale applications in the concrete exterior wall. The surface microstructure and the formation of air pockets are a prerequisite for superamphiphobicity, which promotes the liquid on the coating surface into the Cassie-Baxter state. Furthermore, the formation of air pockets is closely related to the gas adsorption capacity and the specific surface area (SBET) of the surface microstructure on the coating surface. The coatings with different SBET constructed and the advanced contact angle were measured. The influence of air pockets on the superamphiphobicity of coatings was studied in combination with the optical microscope. The understanding that SBET further influences superamphiphobicity by affecting the surface air pockets is proposed.
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Affiliation(s)
- Guanyu Liu
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Huiyun Xia
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Wenshuo Zhang
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Lei Lang
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Haipeng Geng
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Lifang Song
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
| | - Yanhui Niu
- Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an 710064, China
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26
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Li C, Boban M, Beebe JM, Bhagwagar DE, Liu J, Tuteja A. Non-Fluorinated, Superhydrophobic Binder-Filler Coatings on Smooth Surfaces: Controlled Phase Separation of Particles to Enhance Mechanical Durability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:3104-3112. [PMID: 33667094 DOI: 10.1021/acs.langmuir.0c03455] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
There has been a recent drive to develop non-fluorinated superhydrophobic coatings due to the toxicity, cost, and environmental impact of perfluorinated components. One of the main challenges in developing superhydrophobic coatings in general and non-fluorinated superhydrophobic coatings in particular is optimization of mechanical durability, as the rough asperities required for maintaining superhydrophobicity tend to be easily removed by abrasion. Although rough and self-similar hydrophobic surfaces composed of loosely adhered particles or highly porous structures tend to produce excellent superhydrophobicity, they have low inherent mechanical durability and their longevity under real conditions is compromised. To address this issue, this work investigates the addition of a polymeric matrix material (the binder) to hydrophobic nanoparticles (the filler) to produce spray-coated superhydrophobic surfaces with improved inherent mechanical durability. Hansen solubility parameters were used to tune the interactions between the binder, filler, and solvent used to deliver the coating. It was found that lowering the binder/filler miscibility and using a poor solvent mixture generates more surface roughness, thereby lowering the minimum filler load required to achieve superhydrophobicity. This leads to an overall more inherently durable system that remains hydrophobic for thousands of light abrasion cycles.
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Affiliation(s)
- Chao Li
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Mathew Boban
- Department of Macromolecular Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jeremy M Beebe
- The Dow Chemical Company, Midland, Michigan 48686, United States
| | | | - Junying Liu
- The Dow Chemical Company, Midland, Michigan 48686, United States
| | - Anish Tuteja
- Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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27
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Xu L, Yang L, Yang S, Xu Z, Lin G, Shi J, Zhang R, Yu J, Ge D, Guo Y. Earthworm-Inspired Ultradurable Superhydrophobic Fabrics from Adaptive Wrinkled Skin. ACS APPLIED MATERIALS & INTERFACES 2021; 13:6758-6766. [PMID: 33527836 DOI: 10.1021/acsami.0c18528] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wrapped by periodically wrinkled skin, soft earthworm shows excellent robustness against sticky soil. Mimicking this deformation adaptability, here, we report an ultradurable superhydrophobic fabric by exploiting the formation of adaptive, soft wrinkled poly(dimethylsiloxane) (PDMS) skins. Uniform wrinkles are created on woven fabric fibers due to the surface instability of PDMS coating with a cross-linking gradient induced by Ar plasma treatment. Both the surface topography of wrinkles and the viscoelasticity of the underlying compliant layer to release stress endow the treated superhydrophobic fabrics with extraordinary durability, withstanding 800 standard laundries or 1000 rubbing cycles under 44.8 kPa. Additionally, superhydrophobic fabrics are self-healable after heating or plasma treatment. This insight of engineering soft skins with periodic submicron surface topography and gradient modulus provides a pathway for the design of ultradurable, multifunctional wearables.
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Affiliation(s)
- Liyun Xu
- Department of Applied Physics, Member of Magnetic Confinement Fusion Research Center, Ministry of Education, College of Science, Donghua University, Shanghai 201620, China
- Innovation Center for Textile Science and Technology, Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Lili Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Shu Yang
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Zhao Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
- Institute of Functional Materials, Donghua University, Shanghai 201620, China
| | - Gaojian Lin
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jianjun Shi
- Department of Applied Physics, Member of Magnetic Confinement Fusion Research Center, Ministry of Education, College of Science, Donghua University, Shanghai 201620, China
| | - Ruiyun Zhang
- Innovation Center for Textile Science and Technology, Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Key Laboratory of Textile Science and Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Dengteng Ge
- Institute of Functional Materials, Donghua University, Shanghai 201620, China
| | - Ying Guo
- Department of Applied Physics, Member of Magnetic Confinement Fusion Research Center, Ministry of Education, College of Science, Donghua University, Shanghai 201620, China
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28
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Wang P, Zhang J, Wen H, Zhu Z, Huang W, Liu C. Photothermal conversion-assisted oil Water separation by superhydrophobic Cotton yarn prepared via the silver mirror reaction. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125684] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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29
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Park J, Lim T, Yang KH, Ju S, Jeong SM. Dipping-Press Coating Method for Retaining Transparency and Imparting Hydrophobicity Regardless of Plastic Substrate Type. Polymers (Basel) 2021; 13:polym13030403. [PMID: 33513938 PMCID: PMC7866197 DOI: 10.3390/polym13030403] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 01/23/2021] [Accepted: 01/23/2021] [Indexed: 11/16/2022] Open
Abstract
Plastics are used in cover substrates for billboards, windows, large LED signboards, lighting devices, and solar panels because they are transparent and can be colored and shaped as desired. However, when plastic cover substrates installed in outdoor environments are constantly exposed to harsh conditions such as snow, rain, dust, and wind, their transparency deteriorates owing to watermarks and dust contamination. Herein, we investigated a simple dipping-press coating method that can impart hydrophobicity while maintaining the transparency, regardless of the plastic substrate type. A highly transparent and hydrophobic coating film was formed on a plastic substrate by a two-step process, as follows: (1) application of a polydimethylsiloxane–octadecylamine coating by a dipping process, and (2) embedding (1H,1H,2H,2H-heptadecafluorodec-1-yl) phosphonic acid–aluminum oxide nanoparticles by a thermal press process. The plastic substrates on which the highly transparent and hydrophobic coating film was formed showed 150° or higher hydrophobicity and 80% or higher visible light transparency. The coating method proposed herein can easily impart hydrophobicity and is compatible with any plastic substrate that must maintain prolonged transparency without contamination when exposed to adverse conditions.
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Affiliation(s)
- Jeeyin Park
- Department of Physics, Kyonggi University, Suwon 16227, Gyeonggi-do, Korea; (J.P.); (T.L.); (S.J.)
| | - Taekyung Lim
- Department of Physics, Kyonggi University, Suwon 16227, Gyeonggi-do, Korea; (J.P.); (T.L.); (S.J.)
| | - Keun-Hyeok Yang
- Department of Architectural Engineering Graduate School, Kyonggi University, Suwon 16227, Gyeonggi-do, Korea;
| | - Sanghyun Ju
- Department of Physics, Kyonggi University, Suwon 16227, Gyeonggi-do, Korea; (J.P.); (T.L.); (S.J.)
| | - Sang-Mi Jeong
- Department of Physics, Kyonggi University, Suwon 16227, Gyeonggi-do, Korea; (J.P.); (T.L.); (S.J.)
- Correspondence:
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30
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Zhou F, Zhang Y, Zhang D, Zhang Z, Fu F, Zhang X, Yang Y, Lin H, Chen Y. Fabrication of robust and self-healing superhydrophobic PET fabrics based on profiled fiber structure. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125686] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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32
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Haghanifar S, Galante AJ, Leu PW. Challenges and Prospects of Bio-Inspired and Multifunctional Transparent Substrates and Barrier Layers for Optoelectronics. ACS NANO 2020; 14:16241-16265. [PMID: 33232118 DOI: 10.1021/acsnano.0c06452] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Bio-inspiration and advances in micro/nanomanufacturing processes have enabled the design and fabrication of micro/nanostructures on optoelectronic substrates and barrier layers to create a variety of functionalities. In this review article, we summarize research progress in multifunctional transparent substrates and barrier layers while discussing future challenges and prospects. We discuss different optoelectronic device configurations, sources of bio-inspiration, photon management properties, wetting properties, multifunctionality, functionality durability, and device durability, as well as choice of materials for optoelectronic substrates and barrier layers. These engineered surfaces may be used for various optoelectronic devices such as touch panels, solar modules, displays, and mobile devices in traditional rigid forms as well as emerging flexible versions.
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Affiliation(s)
- Sajad Haghanifar
- Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Anthony J Galante
- Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Paul W Leu
- Department of Industrial Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Mechanical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
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Improving superhydrophobicity of polydimethylsiloxanes using embedding fluorinated polyhedral oligomeric silsesquioxanes cages. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03721-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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34
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Svejdal RR, Sticker D, Sønderby C, Kutter JP, Rand KD. Thiol-ene microfluidic chip for fast on-chip sample clean-up, separation and ESI mass spectrometry of peptides and proteins. Anal Chim Acta 2020; 1140:168-177. [DOI: 10.1016/j.aca.2020.09.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 01/13/2023]
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35
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Wang C, Guo Z. A comparison between superhydrophobic surfaces (SHS) and slippery liquid-infused porous surfaces (SLIPS) in application. NANOSCALE 2020; 12:22398-22424. [PMID: 33174577 DOI: 10.1039/d0nr06009g] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Slippery liquid-infused porous surfaces inspired by the Nepenthes pitcher plant exhibit excellent performances and are known for their extremely low contact angle hysteresis (<5°) and smooth surface. In contrast, superhydrophobic surfaces (SHS) exhibit poor pressure stability, difficulty in self-healing, and difficulty in removing low surface tension liquids or organic solvents, which can affect the stable air layer. Thus, these issues can be avoided through the replacement of SHS with slippery liquid infused porous surfaces (SLIPS). In this review, the theoretical models of SHS and SLIPS are classified initially, and several design standards for the preparation of SLIPS are briefly described. Then, we focus on comparing the differences in the application of SHS and SLIPS, such as pressure stability, transparency, and droplet manipulation. However, there are still some problems that need to be improved during the preparation of SLIPS, such as the evaporation of the lubricant layer, the use of a lubricant layer of toxic perfluoropolyether and other substances, and easily lost nanostructured lubricant layer. Accordingly, several new improved methods are proposed in this review, and finally, the potential applications and development prospects of SLIPS are presented.
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Affiliation(s)
- Chenghong Wang
- Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, P. R. China.
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36
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Beeswax-inspired superhydrophobic electrospun membranes for peritendinous anti-adhesion. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 116:111166. [DOI: 10.1016/j.msec.2020.111166] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/31/2020] [Accepted: 06/05/2020] [Indexed: 11/20/2022]
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37
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Wang W, Song MS, Yang XN, Zhao J, Cole IS, Chen XB, Fan Y. Synergistic Coating Strategy Combining Photodynamic Therapy and Fluoride-Free Superhydrophobicity for Eradicating Bacterial Adhesion and Reinforcing Corrosion Protection. ACS APPLIED MATERIALS & INTERFACES 2020; 12:46862-46873. [PMID: 32960039 DOI: 10.1021/acsami.0c10584] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Device-associated infection is one of the significant challenges in the biomedical industry and clinical management. Controlling the initial attachment of microbes upon the solid surface of biomedical devices is a sound strategy to minimize the formation of biofilms and infection. A synergistic coating strategy combining superhydrophobicity and bactericidal photodynamic therapy is proposed herein to tackle infection issues for biomedical materials. A multifunctional coating is produced upon pure Mg substrate through a simple blending procedure without involvement of any fluoride-containing agents, differing from the common superhydrophobic surface preparations. Superhydrophobic features of the coating are confirmed through water contact angle measurements (152.5 ± 1.9°). In vitro experiments reveal that bacterial-adhesion repellency regarding both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) strains approaches over 96%, which is evidently ascribed to the proposed synergistic strategy, that is, superhydrophobic nature and microbicidal ability of photodynamic therapy. Electrochemical analysis indicates that the superhydrophobic coating provides pronounced protection against corrosion to underlying Mg with 80% reduction in the corrosion rate in minimum essential medium and retains the original surface features after 168 h exposure to neutral salt spray. The proof-of-concept research holds a great promise for tackling the notorious bacterial infection and poor corrosion resistance of Mg-based biodegradable materials in a simple, efficient, and environmentally benign manner.
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Affiliation(s)
- Wei Wang
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Ming-Shi Song
- School of Engineering, RMIT University, Carlton 3053, Victoria, Australia
| | - Xiao-Na Yang
- College of Chemistry, Jilin University, Changchun 130012, China
| | - Jie Zhao
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, China
| | - Ivan S Cole
- School of Engineering, RMIT University, Carlton 3053, Victoria, Australia
| | - Xiao-Bo Chen
- School of Engineering, RMIT University, Carlton 3053, Victoria, Australia
| | - Yong Fan
- College of Chemistry, Jilin University, Changchun 130012, China
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38
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Talebizadehsardari P, Seyfi J, Hejazi I, Eyvazian A, Khodaie M, Seifi S, Davachi SM, Bahmanpour H. Enhanced chemical and mechanical durability of superhydrophobic and superoleophilic nanocomposite coatings on cotton fabric for reusable oil/water separation applications. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125204] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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39
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Sun Y, Ouyang B, Rawat RS, Chen Z. Rapid and Stable Plasma Transformation of Polyester Fabrics for Highly Efficient Oil-Water Separation. GLOBAL CHALLENGES (HOBOKEN, NJ) 2020; 4:1900095. [PMID: 32642075 PMCID: PMC7330499 DOI: 10.1002/gch2.201900095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/13/2020] [Indexed: 06/11/2023]
Abstract
Fabrics with special wettability have drawn growing attention in recent years in the area of oil-water separation due to their low cost, good flexibility, and ease of handling. However, an efficient and fast method to enable the required wetting state on fabrics still remains a challenge. In this work, a one-step, rapid, and chemical-free hydrogen plasma treatment is reported to prepare a superhydrophobic and oleophilic polyester fabric. The as-prepared fabrics display a static water contact angle of 153.2° with excellent oil-water separation capability. The mechanism of surface transformation is discussed through chemical analyses, which indicate a significant removal of carboxyl group from the pristine hydrophilic surface. This developed method is envisaged to be used for on-demand large-scale production of materials for emergency oil cleanup through either separation or selective adsorption.
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Affiliation(s)
- Ye Sun
- School of Material Science and EngineeringNanyang Technological UniversitySingapore639798Singapore
| | - Bo Ouyang
- Natural Science and Science EducationNational Institute of EducationNanyang Technological UniversitySingapore637616Singapore
| | - Rajdeep Singh Rawat
- Natural Science and Science EducationNational Institute of EducationNanyang Technological UniversitySingapore637616Singapore
| | - Zhong Chen
- School of Material Science and EngineeringNanyang Technological UniversitySingapore639798Singapore
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40
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Kim S, Lee JW, Hwang W. One-Step Eco-Friendly Superhydrophobic Coating Method Using Polydimethylsiloxane and Ammonium Bicarbonate. ACS APPLIED MATERIALS & INTERFACES 2020; 12:28869-28875. [PMID: 32463651 DOI: 10.1021/acsami.0c06697] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Superhydrophobic surfaces offer numerous advantages and have become popular in a wide range of fields. Although many approaches for the modification of surface wettability have been developed, the practical application of superhydrophobic surfaces has been limited by the need for toxic materials and specialized equipment. Herein, a one-step coating method is developed for the fabrication of a superhydrophobic surface to eliminate these limitations. This environmentally friendly coating process uses only two reagents, namely, polydimethylsiloxane and ammonium bicarbonate, to minimize the inconvenience and costs associated with the disposal of used toxic materials. The superhydrophobic surface exhibits excellent durability, and the method is applicable to a variety of target surface shapes, including three-dimensional and complex structures. Besides, a wettability patterned surface and a functional filter for oil/water separation can be fabricated using this method. The numerous advantages of this approach demonstrate great practical application potential of these superhydrophobic surfaces.
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Affiliation(s)
- Seongmin Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jeong-Won Lee
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
- Department of Mechanical Engineering, Chosun University, Gwangju, 61452, Republic of Korea
| | - Woonbong Hwang
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, Republic of Korea
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41
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Khan A, Huang K, Sarwar MG, Cheng K, Li Z, Tuhin MO, Rabnawaz M. Self-healing and self-cleaning clear coating. J Colloid Interface Sci 2020; 577:311-318. [PMID: 32497916 DOI: 10.1016/j.jcis.2020.05.073] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/18/2020] [Accepted: 05/18/2020] [Indexed: 12/13/2022]
Abstract
Coatings exhibiting both self-cleaning and self-healing properties are envisioned for a wide range of applications. Herein we report a simple fabrication approach toward poly(urea-urethane) (PU) coatings having self-healing and self-cleaning properties. The self-cleaning component is a poly(dimethylsiloxane) (PDMS), which is affordable in cost and also has a lower environmental footprint relative to its fluorinated counterpart. The self-healing properties are imparted by dynamic urea bonds of the matrix. The obtained surfaces are evaluated for their anti-smudge properties such as water-, oil- and ink-repellency, as well as optical properties. The self-healing properties of these coatings are evaluated by making scores with a doctor blade and monitoring the healing under different conditions using optical microscopy. The resultant coatings are also investigated for their good mechanical properties. The surface chemical compositions are determined x-ray photoelectron spectroscopy, while atomic force microscopy is used for microstructural analysis of these coatings.
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Affiliation(s)
- Ajmir Khan
- School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824-1223, USA
| | - Kun Huang
- School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824-1223, USA
| | - Mohammed G Sarwar
- School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824-1223, USA
| | - Krystal Cheng
- School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824-1223, USA
| | - Zhao Li
- School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824-1223, USA
| | - Mohammad O Tuhin
- School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824-1223, USA
| | - Muhammad Rabnawaz
- School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824-1223, USA.
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42
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Khuyen NQ, Kiefer R, Elhi F, Anbarjafari G, Martinez JG, Tamm T. A Biomimetic Approach to Increasing Soft Actuator Performance by Friction Reduction. Polymers (Basel) 2020; 12:E1120. [PMID: 32422917 PMCID: PMC7284564 DOI: 10.3390/polym12051120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/28/2020] [Accepted: 05/12/2020] [Indexed: 12/02/2022] Open
Abstract
While increasing power output is the most straight-forward solution for faster and stronger motion in technology, sports, or elsewhere, efficiency is what separates the best from the rest. In nature, where the possibilities of power increase are limited, efficiency of motion is particularly important; the same principle can be applied to the emerging biomimetic and bio-interacting technologies. In this work, by applying hints from nature, we consider possible approaches of increasing the efficiency of motion through liquid medium of bilayer ionic electroactive polymer actuations, focusing on the reduction of friction by means of surface tension and hydrophobicity. Conducting polyethylene terephthalate (PET) bilayers were chosen as the model actuator system. The actuation medium consisted of aqueous solutions containing tetramethylammonium chloride and sodium dodecylbenzenesulfonate in different ratios. The roles of ion concentrations and the surface tension are discussed. Hydrophobicity of the PET support layer was further tuned by adding a spin-coated silicone layer to it. As expected, both approaches increased the displacement-the best results having been obtained by combining both, nearly doubling the bending displacement. The simple approaches for greatly increasing actuation motion efficiency can be used in any actuator system operating in a liquid medium.
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Affiliation(s)
- Nguyen Quang Khuyen
- Conducting Polymers in Composites and Applications Research Group, Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam;
| | - Rudolf Kiefer
- Conducting Polymers in Composites and Applications Research Group, Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam;
| | - Fred Elhi
- Intelligent Materials and System Lab, Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia; (F.E.); (T.T.)
| | - Gholamreza Anbarjafari
- iCV Research Lab, Institute of Technology, University of Tartu, 50411 Tartu, Estonia;
- Faculty of Engineering, Hasan Kalyoncu University, 27100 Gaziantep, Turkey
| | - Jose G. Martinez
- Division of Sensor and Actuator Systems, Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden;
| | - Tarmo Tamm
- Intelligent Materials and System Lab, Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia; (F.E.); (T.T.)
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43
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Teisala H, Baumli P, Weber SAL, Vollmer D, Butt HJ. Grafting Silicone at Room Temperature-a Transparent, Scratch-resistant Nonstick Molecular Coating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4416-4431. [PMID: 32239949 PMCID: PMC7191751 DOI: 10.1021/acs.langmuir.9b03223] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 03/30/2020] [Indexed: 05/26/2023]
Abstract
Silicones are usually considered to be inert and, thus, not reactive with surfaces. Here we show that the most common silicone, methyl-terminated polydimethylsiloxane, spontaneously and stably bonds on glass-and any other material with silicon oxide surface chemistry-even at room temperature. As a result, a 2-5 nm thick and transparent coating, which shows extraordinary nonstick properties toward polar and nonpolar liquids, ice, and even super glue, is formed. Ten microliter drops of various liquids slide off a coated glass when the sample is inclined by less than 10°. Ice adhesion strength on a coated glass is only 2.7 ± 0.6 kPa, that is, more than 98% less than ice adhesion on an uncoated glass. The mechanically stable coating can be easily applied by painting, spraying, or roll-coating. Notably, the reaction does not require any excess energy or solvents, nor does it induce hazardous byproducts, which makes it an ideal option for environmentally sustainable surface modification in a myriad of technological applications.
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Affiliation(s)
- Hannu Teisala
- Department
of Physics at Interfaces, Max Planck Institute
for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Philipp Baumli
- Department
of Physics at Interfaces, Max Planck Institute
for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Stefan A. L. Weber
- Department
of Physics at Interfaces, Max Planck Institute
for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
- Department
of Physics, Johannes Gutenberg University, Staudingerweg 10, D-55128 Mainz, Germany
| | - Doris Vollmer
- Department
of Physics at Interfaces, Max Planck Institute
for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
| | - Hans-Jürgen Butt
- Department
of Physics at Interfaces, Max Planck Institute
for Polymer Research, Ackermannweg 10, D-55128 Mainz, Germany
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44
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Xue CH, Tian QQ, Jia ST, Zhao LL, Ding YR, Li HG, An QF. The fabrication of mechanically durable and stretchable superhydrophobic PDMS/SiO2 composite film. RSC Adv 2020; 10:19466-19473. [PMID: 35515442 PMCID: PMC9054060 DOI: 10.1039/d0ra02029j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 05/06/2020] [Indexed: 01/09/2023] Open
Abstract
Stretchable superhydrophobic film was fabricated by casting silicone rubber polydimethylsiloxane (PDMS) on a SiO2 nanoparticle-decorated template and subsequent stripping. PDMS endowed the resulting surface with excellent flexibility and stretchability. The use of nanoparticles contributed to the sustained roughening of the surface, even under large strain, offering mechanically durable superhydrophobicity. The resulting composite film could maintain its superhydrophobicity (water contact angle ≈ 161° and sliding angle close to 0°) under a large stretching strain of up to 100% and could withstand 500 stretching–releasing cycles without losing its superhydrophobic properties. Furthermore, the obtained film was resistant to long term exposure to different pH solutions and ultraviolet light irradiation, as well as to manual destruction, sandpaper abrasion, and weight pressing. Stretchable superhydrophobic film was fabricated by casting silicone rubber polydimethylsiloxane (PDMS) on a SiO2 nanoparticle-decorated template and subsequent stripping.![]()
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Affiliation(s)
- Chao-Hua Xue
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
- National Demonstration Center for Experimental Light Chemistry Engineering Education
| | - Qian-Qian Tian
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Shun-Tian Jia
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Ling-Ling Zhao
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Ya-Ru Ding
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Hui-Gui Li
- College of Bioresources Chemical and Materials Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Qiu-Feng An
- College of Chemistry and Chemical Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
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45
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Lan Y, Wang Y, Zhang H, Shan P, Shi X, Long M. A facile approach to achieve multifunctional polyethylene terephthalate fabrics with durable superhydrophobicity, photocatalysis and self-quenched flame retardance. NEW J CHEM 2020. [DOI: 10.1039/d0nj03259j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multifunctional PET fabrics were fabricated through combing layer-by-layer and spray coating methods.
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Affiliation(s)
- Yanrong Lan
- College of Chemistry and Environmental Science
- Hebei University
- Baoding 071002
- China
| | - Yingchun Wang
- College of Chemistry and Environmental Science
- Hebei University
- Baoding 071002
- China
| | - Han Zhang
- College of Chemistry and Environmental Science
- Hebei University
- Baoding 071002
- China
| | - Peng Shan
- College of Chemistry and Environmental Science
- Hebei University
- Baoding 071002
- China
- Institute of Life Science and Green Development
| | - Xiaomeng Shi
- College of Chemistry and Environmental Science
- Hebei University
- Baoding 071002
- China
| | - Mengying Long
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University
- Binhai New City
- China
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46
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Rangel RCC, Cruz NC, Rangel EC. Role of the Plasma Activation Degree on Densification of Organosilicon Films. MATERIALS 2019; 13:ma13010025. [PMID: 31861607 PMCID: PMC6981977 DOI: 10.3390/ma13010025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/13/2019] [Accepted: 09/16/2019] [Indexed: 11/16/2022]
Abstract
The possibility of controlling the density of organosilicon films was investigated by tuning the plasma activation degree without providing extra energy to the structure, as usually reported in the literature. For this purpose, thin films were deposited in plasmas fed with hexamethyldisiloxane/Ar mixtures at a total pressure of 9.5 Pa. The power of the radiofrequency excitation signal, P, ranged from 50 to 300 W to alter the average energy of the plasma species while the electrical configuration was chosen to avoid direct ion bombardment of the growing films. In this way, it was possible to evaluate the effect of P on the film properties. Thickness and deposition rate were derived from profilometry data. X-ray energy dispersive and infrared spectroscopies were, respectively, applied to analyze the chemical composition and molecular structure of the layers. Surface topography and roughness were determined by atomic force microscopy while nanoindentation was used to evaluate the mechanical properties of the films. From electrochemical impedance spectroscopy the total resistance to the flow of electrolyte species was derived. The main alteration observed in the structure with changing P is related to the proportion of the methyl functional which remains connected to the Si backbone. Chain crosslinking and film density are affected by this structural modification induced by homogeneous and heterogeneous plasma reactions. The density increase resulted in a film with hardness comparable to that of the silica and more resistant to the permeation of oxidative species, but preserving the organosilicon nature of the structure.
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47
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Liu G, Wang J, Wang W, Yu D. A novel PET fabric with durable anti-fouling performance for reusable and efficient oil-water separation. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.123941] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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48
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Zhang Y, Xiao Z, Liu C, Yu X. Durable superamphiphobic coatings from one-step electrostatic dusting. SOFT MATTER 2019; 15:7374-7380. [PMID: 31432875 DOI: 10.1039/c9sm01278h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Superamphiphobic coatings are fabricated via electrostatic dusting using modified silica particles and polymethyl methacrylate resin particles on conductive substrates (metal and conductive glass). The obtained translucent superamphiphobic coatings show excellent durability and chemical robustness even after exposure to strong acids and bases. Importantly, the coatings maintain hydrophobicity even after 100 cycles of abrasion testing and 1000 cycles of finger wiping. In addition, the fabricated coatings are superoleophobic after finger wiping, tape peeling and oil immersion. This facile strategy may provide researchers in related fields with new avenues for improving powder coatings in practical applications.
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Affiliation(s)
- Youfa Zhang
- Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, P. R. China.
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49
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Shen L, Lai Y, Fu H. Fabrication of flower clusters‐like superhydrophobic surface via a UV curable coating of ODA and V‐PDMS. J Appl Polym Sci 2019. [DOI: 10.1002/app.48210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Lixiang Shen
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product TechnologySouth China University of Technology Guangzhou 510640 People's Republic of China
| | - Yingying Lai
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product TechnologySouth China University of Technology Guangzhou 510640 People's Republic of China
| | - Heqing Fu
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product TechnologySouth China University of Technology Guangzhou 510640 People's Republic of China
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50
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Rudge RED, Scholten E, Dijksman JA. Advances and challenges in soft tribology with applications to foods. Curr Opin Food Sci 2019. [DOI: 10.1016/j.cofs.2019.06.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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