China 
Africa 
Explore chapters and articles related to this topic
Hydrophobic and Hydrophilic Polymer Coatings
Published in Sanjay Mavinkere Rangappa, Jyotishkumar Parameswaranpillai, Suchart Siengchin, Polymer Coatings, 2020
Sanjay Remanan, Harikrishnan Pulikkalparambil, Sanjay Mavinkere Rangappa, Suchart Siengchin, Jyotishkumar Parameswaranpillai, Narayan Chandra Das
Self-cleaning surfaces are the new era in material science that has seen considerable interests in industrial and research fields. Basically, self-cleaning surfaces are possible in two ways, viz. hydrophilic and hydrophobic materials; coatings based on these categories are widely being used in the automobile and construction industries (https://www.aculon.com/repellency-treatments/hydrophobic-coatings/, https://www.neverwet.com/). Hydrophilic coating and hydrophobic coating have the tendency to clean the dirt present on the surfaces and are accomplished using two different mechanisms.
Correlation between Coating Properties and Industrial Applications
Published in Sam Zhang, Jyh-Ming Ting, Wan-Yu Wu, Protective Thin Coatings Technology, 2021
Yin-Yu Chang, Heng-Li Huang, Jui-Ting Hsu, Ming-Tzu Tsai
In 2012, Chang et al. [6] coated ZnO nanorods on Ti plate, and they found that with the increase of the amount of electroplated ZnO nanorods, the antibacterial capacity of ZnO-coated samples was raised. However, biocompatibility was also low on ZnO coated samples than uncoated Ti plate. Voicu et al. [83] doped ZnO with different concentrations of cobalt (Co) and obtained a dense layer of microstructure. This kind of Co doped ZnO thin films deposited by spin coating enhanced antimicrobial abilities against colonization and biofilm formation. In addition, it also showed biocompatibilities for example on cellular adhesion and proliferation. In 2013, Tsai et al. [84] produced a porous Zn-doped TiO2 layer on Ti plate by cathodic arc deposition process. The results indicated that with 7.6 at. % of Zn, the composite Ti(Zn)O2 coating not only provided antibacterial outcome, but also preserved the biocompatibility to bone cells. With different coating technologies by adopting a first plasma electrolytic oxidation (PEO) of surface modification and then a HiPIMS coating deposition. Recently, techniques have been rapidly developed to produce smart multifunctional nanomaterials by applying observations from nature materials which may be called “bio-inspired nanostructures”. Sun et al. [102] fabricated fish-scale bio-inspired multifunctional ZnO nanostructures, and the nanostructured coatings showed tunable light refraction and reflection, modulated surface wettability and damage-tolerant mechanical properties for various applications, such as optical coatings, sensing or lens arrays for use in reflective displays, packing, advertising and solar energy harvesting; self-cleaning surfaces, including anti-smudge, anti-fouling and anti-fogging, and self-sterilizing surfaces; and mechanical/chemical barrier coatings. In 2020, Huang et al. [85] synthesized Ta(Zn)O films contained amorphous tantalum oxide and crystalline ZnO. The Ta(Zn)O films demonstrated a nice antibacterial effect on both Gram-positive and Gram-negative bacteria S. aureus and A. actinomycetemcomitans. Although Ta(Zn)O coating presented lower level of the cell viability in MG-63 bone cells, the performances of cell attachment and cell growth of human skin fibroblasts on Ta(Zn)O coating were good.
Development of durable superhydrophobic and UV protective cotton fabric via TiO2/trimethoxy(octadecyl)silane nanocomposite coating
Published in The Journal of The Textile Institute, 2021
Muhammad Zaman Khan, Jiri Militky, Vijay Baheti, Jakub Wiener, Michal Vik
Recently, self-cleaning surfaces have received great attention within the scientific community due to increased demand of anti-wetting surfaces and their industrial applications. Superhydrophobic surfaces have been explored with substantial attention over the past decade and phenomenal progress has been made in this field. The physical self-cleaning concept is based on the superhydrophobic approach where the water droplets achieve spherical shape and subsequently roll-off the surface taking away the dirt particles. This self-cleaning concept is based on the superhydrophobic approach which is also known as the lotus effect. To obtain superhydrophobic surfaces, surface roughness in combination with low surface energy of material are considered as the two important factors (Bae et al., 2009; Feng et al., 2002; Yan et al., 2011).
Integrated CNTs/SiO2 nano-additives on SBS polymeric superhydrophobic coatings for self-cleaning
Published in Surface Engineering, 2020
Bin Chen, Zaosheng Lv, Fen Guo, Yanfen Huang
Over the past few years, self-cleaning surfaces have attracted significant attention due to the great demand for practical application such as self-cleaning glass, self-cleaning tiles, self-cleaning exterior walls, self-cleaning fabric and so on. Superhydrophobic surfaces with a water contact angle higher than 150° and a sliding angle lower than 10° usually have good self-cleaning properties [1–5]. In addition, superhydrophobic surfaces have a wide range of other applications such as anti-corrosion [6,7], oil/water separation [8–10], anti-icing [11,12], anti-bacteria [13,14] and drag reduction [15,16]. A large number of methods have been reported to fabricate superhydrophobic surfaces from two key aspects of low surface energy and hierarchical structure, but most of which, require tedious procedures, high costs or specific substrates [17]. The methods of inability to prepare superhydrophobic surfaces over a large area limit their practical applications. Furthermore, poor mechanical properties are serious and common problems in superhydrophobic surfaces [18,19], limiting their practical applications, therefore, the preparation of robust superhydrophobic surfaces is very important to the practical application of the superhydrophobic products. Until now, ensuring that preparation processes for superhydrophobic surfaces are cheap, fast, simple, and feasible remains challenging for practical applications.
Plants and architecture: the role of biology and biomimetics in materials development for buildings
Published in Intelligent Buildings International, 2019
R. T. Durai Prabhakaran, Morwenna J. Spear, Simon Curling, Peter Wootton-Beard, Philip Jones, Iain Donnison, Graham A. Ormondroyd
To achieve water repellent qualities on man-made materials, surfaces need to be designed by modifying features through adjusting the physical and chemical properties at the micro to nano scale levels in a manner that mimics the hierarchical nanotextures seen in plant leaves (Barthlott et al. 2017). Self-cleaning surfaces have been widely known and self-cleaning glass or self-cleaning paints have been in the market for several decades. The concept has found application in not only self-cleaning surfaces, but also corrosion resistance and reducing flammability (Cannavale et al. 2010; Min, Jiang, and Jiang 2008; Davis et al. 2015; Payra et al. 2015; Wu, Suzuki, and Yomo 2011).