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Su J, Zhang H, Zhu M, Cai J, Xu B. Green and Abrasion-Resistant Superhydrophobic Coatings Constructed with Tung Oil/Carnauba Wax/Silica for Wood Surface. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3000. [PMID: 38930369 PMCID: PMC11205782 DOI: 10.3390/ma17123000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2024] [Revised: 06/08/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024]
Abstract
As a renewable, environmentally friendly, natural, and organic material, wood has been receiving extensive attention from various industries. However, the hydrophilicity of wood significantly impacts the stability and durability of its products, which can be effectively addressed by constructing superhydrophobic coatings on the surface of wood. In this study, tung oil, carnauba wax, and silica nanoparticles were used to construct superhydrophobic coatings on hydrophilic wood surfaces by a facile two-step dip-coating method. The surface wettability and morphology of the coatings were analyzed by a contact angle meter and scanning electron microscope, respectively. The results suggest that the coating has a micron-nanosized two-tiered structure, and the contact angle of the coating is higher than 150° and the roll-off angle is lower than 10°. Sandpaper abrasion tests and UV diffuse reflectance spectra indicate that the coatings have excellent abrasion resistance and good transparency. In addition, the coated wood shows excellent self-cleaning and water resistance, which have great potential for applications in industry and furniture manufacturing.
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Affiliation(s)
| | | | | | | | - Bin Xu
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (J.S.); (H.Z.); (M.Z.); (J.C.)
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Ma T, Zhou Q, Liu C, Li L, Guo C, Mei C. Construction of Multifunctional Hierarchical Biofilms for Highly Sensitive and Weather-Resistant Fire Warning. Polymers (Basel) 2023; 15:3666. [PMID: 37765520 PMCID: PMC10535110 DOI: 10.3390/polym15183666] [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: 08/16/2023] [Revised: 09/02/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023] Open
Abstract
Multifunctional biofilms with early fire-warning capabilities are highly necessary for various indoor and outdoor applications, but a rational design of intelligent fire alarm films with strong weather resistance remains a major challenge. Herein, a multiscale hierarchical biofilm based on lignocellulose nanofibrils (LCNFs), carbon nanotubes (CNTs) and TiO2 was developed through a vacuum-assisted alternate self-assembly and dipping method. Then, an early fire-warning system that changes from an insulating state to a conductive one was designed, relying on the rapid carbonization of LCNFs together with the unique electronic excitation characteristics of TiO2. Typically, the L-CNT-TiO2 film exhibited an ultrasensitive fire-response signal of ~0.30 s and a long-term warning time of ~1238 s when a fire disaster was about to occur, demonstrating a reliable fire-alarm performance and promising flame-resistance ability. More importantly, the L-CNT-TiO2 biofilm also possessed a water contact angle (WCA) of 166 ± 1° and an ultraviolet protection factor (UPF) as high as 2000, resulting in excellent superhydrophobicity, antifouling, self-cleaning as well as incredible anti-ultraviolet (UV) capabilities. This work offers an innovative strategy for developing advanced intelligent films for fire safety and prevention applications, which holds great promise for the field of building materials.
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Affiliation(s)
- Tongtong Ma
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (T.M.); (C.L.)
| | - Qianqian Zhou
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (T.M.); (C.L.)
| | - Chaozheng Liu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (T.M.); (C.L.)
| | - Liping Li
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510642, China
| | - Chuigen Guo
- Key Laboratory for Biobased Materials and Energy of Ministry of Education, Institute of Biomass Engineering, South China Agricultural University, Guangzhou 510642, China
| | - Changtong Mei
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; (T.M.); (C.L.)
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Tagliaro I, Seccia S, Pellegrini B, Bertini S, Antonini C. Chitosan-based coatings with tunable transparency and superhydrophobicity: A solvent-free and fluorine-free approach by stearoyl derivatization. Carbohydr Polym 2023; 302:120424. [PMID: 36604086 DOI: 10.1016/j.carbpol.2022.120424] [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: 08/06/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 11/30/2022]
Abstract
One of the current greatest challenges in materials science and technology is the development of safe- and sustainable-by-design coatings with enhanced functionalities, e.g. to substitute fluorinated substances raising concerns for their potential hazard on human health. Bio-based polymeric coatings represent a promising route with a high potential. In this study, we propose an innovative sustainable method for fabricating coatings based on chitosan with modified functionality, with a fine-tuning of coating properties, namely transparency and superhydrophobicity. The process consists in two main steps: i) fluorine-free modification of chitosan functional groups with stearoyl chloride and freeze-drying to obtain a superhydrophobic powder, ii) coating deposition using a novel solvent-free approach through a thermal treatment. The modified chitosan is characterized to assess its chemico-physical properties and confirm the functionality modification with fatty acid tails. The deposition method enables tuning the coating properties of transparency and superhydrophobicity, maintaining good durability.
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Affiliation(s)
- Irene Tagliaro
- Department of Materials Science, University of Milano-Bicocca, 20125 Milan, Italy.
| | - Stefano Seccia
- Department of Materials Science, University of Milano-Bicocca, 20125 Milan, Italy.
| | - Beatrice Pellegrini
- Department of Materials Science, University of Milano-Bicocca, 20125 Milan, Italy; Istituto di Ricerche Chimiche e Biochimiche G. Ronzoni, Carbohydrate Science Department, 20133 Milan, Italy.
| | - Sabrina Bertini
- Istituto di Ricerche Chimiche e Biochimiche G. Ronzoni, Carbohydrate Science Department, 20133 Milan, Italy.
| | - Carlo Antonini
- Department of Materials Science, University of Milano-Bicocca, 20125 Milan, Italy.
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Wan J, Xu J, Zhu S, Wang B, Li J, Ying G, Chen K. Flexible biomimetic materials with excellent photothermal performance and superhydrophobicity. J Colloid Interface Sci 2023; 629:581-590. [PMID: 36182755 DOI: 10.1016/j.jcis.2022.09.108] [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: 06/30/2022] [Revised: 09/07/2022] [Accepted: 09/20/2022] [Indexed: 10/14/2022]
Abstract
Although thousands of superhydrophobic composites have been reported, it is still a challenge to develop eco-friendly superhydrophobic materials by a simple and low-cost strategy. Here, a paper-based superhydrophobic material was prepared by carbon fiber powders and polydimethylsiloxane through a facile spraying method. This obtained material has excellent liquid resistance and self-cleaning properties, whose contact angle reaches 155°. In addition, it possesses excellent photothermal conversion characteristics with a stable surface temperature of 73.4 °C and good water evaporation performance with an evaporation rate up to 1.08 kg/(m2·h) under one solar intensity (100 mW/cm2). Also, it has outstanding self-deicing performance, whose deicing time is 120 s earlier than that of the untreated surface under one solar intensity. An adaptability test shows this strategy of functional coatings can also be applied to other fiber substrates (coating paper, kraft paper, non-woven fabric, paulownia veneer, etc.). Overall, this superhydrophobic material has a promising application prospect in many fields such as waterproof packaging, deicing materials, water evaporation materials, etc.
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Affiliation(s)
- Jinming Wan
- Plant Fiber Materials Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jun Xu
- Plant Fiber Materials Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China; Qingyuan Huayan New Material Technology Co., Ltd., Qingyuan 511500, China.
| | - Shiyun Zhu
- Plant Fiber Materials Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China
| | - Bin Wang
- Plant Fiber Materials Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China
| | - Jun Li
- Plant Fiber Materials Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Guangdong Ying
- Shandong Sun Paper Industry Joint Stock, Jining 272100, China
| | - Kefu Chen
- Plant Fiber Materials Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
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Zhang H, Cao Y, Zhen Q, Hu JJ, Cui JQ, Qian XM. Facile Preparation of PET/PA6 Bicomponent Microfilament Fabrics with Tunable Porosity for Comfortable Medical Protective Clothing. ACS APPLIED BIO MATERIALS 2022; 5:3509-3518. [PMID: 35793521 DOI: 10.1021/acsabm.2c00447] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Medical protective materials have broadly drawn attention due to their ability to stop the spread of infectious diseases and protect the safety of medical staff. However, creating medical protective materials that combine excellent liquid shielding performance and outstanding mechanical properties with high breathability is still a challenging task. Herein, a polyester/polyamide 6 (PET/PA6) bicomponent microfilament fabric with tunable porosity for comfortable medical protective clothing was prepared via dip-coating technology and an easy and effective thermal-belt bonding process. The dip coating of the C6-based fluorocarbon polymer endowed the samples with excellent hydrophobicity (alcohol contact angles, 130-128°); meanwhile, by adjusting the temperature and pressure of the thermal-belt bonding process, the porosity of the samples was adapted in the range of 64.19-88.64%. Furthermore, benefitting tunable porosity and surface hydrophobicity, the samples also demonstrated an excellent softness score (24.3-34.5), agreeable air permeability (46.3-27.8 mm/s), and high hydrostatic pressure (1176-4130 Pa). Significantly, the created textiles successfully filter aerosol from the air and display highly tensile strength. These excellent comprehensive performances indicate that the prepared PET/PA6 bicomponent microfilament fabrics would be an attractive choice for medical protective apparel.
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Affiliation(s)
- Heng Zhang
- School of Textile, Zhongyuan University of Technology, No. 1 Huaihe Road, Xinzheng County, 451191 Zhengzhou, Henan Province, China.,Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Changyuan County, 453400 Xinxiang, Henan Province, China
| | - Yang Cao
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Changyuan County, 453400 Xinxiang, Henan Province, China.,School of Textile Science and Engineering, Tiangong University, No. 399 Binshui Xilu Road, Xiqing District, 300387 Tianjin, China
| | - Qi Zhen
- School of Clothing, Zhongyuan University of Technology, No. 1 Huaihe Road, Xinzheng County, 451191 Zhengzhou, Henan Province, China.,Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Changyuan County, 453400 Xinxiang, Henan Province, China
| | - Jun-Jie Hu
- Shanghai Earntz Nonwoven Co., Ltd., No. 88, Jiangong Road, Jinshan District, 201501 Shanghai, China
| | - Jing-Qiang Cui
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Changyuan County, 453400 Xinxiang, Henan Province, China.,Henan Tuoren Medical Device Co., Ltd., Tuoren Industrial Zone, Changyuan County, No. 1 Yangze Road, Changyuan County, 453400 Xinxiang, Henan Province, China
| | - Xiao-Ming Qian
- Henan Key Laboratory of Medical Polymer Materials Technology and Application, No. 1 Yangze Road, Changyuan County, 453400 Xinxiang, Henan Province, China.,School of Textile Science and Engineering, Tiangong University, No. 399 Binshui Xilu Road, Xiqing District, 300387 Tianjin, China
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Controllable construction of multifunctional superhydrophobic coating with ultra-stable efficiency for oily water treatment. J Colloid Interface Sci 2022; 628:356-365. [DOI: 10.1016/j.jcis.2022.07.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 07/20/2022] [Accepted: 07/23/2022] [Indexed: 11/20/2022]
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