scholarly journals Preparation of durable superhydrophobic cotton fabric for self-cleaning and oil–water separation

2021 ◽  
Author(s):  
Qingbo Xu ◽  
Xiating Ke ◽  
Zongqian Wang ◽  
Peng Wang ◽  
Changlong Li
Keyword(s):  
Surface Energy ◽  
Cotton Fabric ◽  
Superhydrophobic Surface ◽  
Lower Surface ◽  
Cotton Fabrics ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning ◽  
Fabric Surface

Abstract Improving the surface roughness and reducing the surface energy are the main strategies for constructing cotton fabrics with superhydrophobic surface. However, the complex finishing process and poor durability still impede the production and application of superhydrophobic cotton fabrics. Therefore, it is critical to produce superhydrophobic fabrics with excellent durability via a noncomplicated method. In this work, monomers of methyl methacrylate (MMA) and trifluoroethyl methacrylate (TFMA) were polymerized via free radical polymerization to produce a fluoropolymer. Then, the fabric was coated with the fluoropolymer to construct a superhydrophobic surface via the pad-dry-cure technology. The TFMA unit in the fluoropolymer had lower surface energy than the MMA unit. Under the high-temperature curing condition, the MMA unit in the fluoropolymer was grafted onto the cotton fabric via transesterification, and the TFMA was exposed on the fabric surface. The finished fabric showed durable superhydrophobic properties, outstanding oil–water separation properties, and excellent self-cleaning properties. Given the results, the finished fabric has great potential application in clothing and industrial fields.

scholarly journals Robust ZnO/HNTs-Based Superhydrophobic Cotton Fabrics With UV Shielding, Self-Cleaning, Photocatalysis, and Oil/Water Separation

2021 ◽  
Author(s):  
Wei xu ◽  
LiHui Xu ◽  
Hong Pan ◽  
Liming Wang ◽  
Yong Shen ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Zno Nanoparticles ◽  
Halloysite Nanotubes ◽  
Cotton Fabrics ◽  
Hybrid Particles ◽  
Water Separation ◽  
Uv Shielding ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning

Abstract In this work, robust superhydrophobic cotton fabrics with UV shielding, self-cleaning, photocatalysis, and oil/water separation were successfully prepared based on micro/nano hierarchical ZnO/HNTs (halloysite nanotubes) hybrid particles and silicone elastomer polydimethylsiloxane (PDMS). ZnO/HNTs hybrid particles were prepared by in-situ growth of ZnO nanoparticles on the surface of halloysite nanotubes (HNTs). ZnO/HNTs hybrid particles and PDMS were used to successively coat cotton fabric by dip-coating approach. The coated cotton fabric displayed excellent superhydrophobicity with a water contact angle of 162.5 ± 1° and photocatalytic degradation of methylene blue solution under UV irradiation owing to the roughness and photocatalytic performance provided by micro/nano hierarchical ZnO/HNTs hybrid particles and low surface energy achieved by PDMS. The as-prepared fabric also displayed outstanding self-cleaning and antifouling properties. In addition, due to its both superhydrophobic and superoleophilic characteristics, the as-prepared cotton fabric can be used to separate several oil/water mixtures and showed good recoverability. The superhydrophobic cotton fabric also exhibited excellent UV shielding performance with a large UV protection factor of 1643.28 due to strong ultraviolet-absorption, light scattering and frequent light reflection of ZnO nanoparticles in ZnO/HNTs composites coated on cotton fabric. Importantly, the as-prepared fabric retained superhydrophobic performance after 2000 cycles rubbing, 90h UV illumination, and immersing in acidic and alkali solutions with different pH values ranging from 1 to 14 for 1 h. These characteristics make multifunctional cotton fabrics a satisfactory candidate in various promising fields.

scholarly journals Fabrication of C6-Fluorocarbon-Dendrimer Based Superhydrophobic Cotton Fabrics for Multifunctional Aspects

2021 ◽  
Author(s):  
Md. Ibrahim H. Mondal ◽  
Joykrisna Saha
Keyword(s):  
Flame Retardant ◽  
Water Repellency ◽  
Cotton Fabrics ◽  
Water Repellent ◽  
Water Separation ◽  
Flame Retardant Property ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning ◽  
Fabric Surface

Abstract C6-Fluorocarbon (FC)-dendrimer has been applied on cotton knit fabric for developing water repellent, self-cleaning, oil-water separation, acid-resistant, antibacterial, UV resistant and flame retardant property while maintaining acceptable levels of comfort for wearers. The C6-Fluorocarbon (FC)-dendrimer coated 100% cotton single jersey knitted fabric samples were prepared using “pad-dry-cure” method, and characterized and tested for comfort and other textile properties. The 90 g/L and 100 g/L FC-dendrimer treated cotton fabrics provided excellent water repellency, oil-water separation and self-cleaning performance. But air permeability and thermal conductivity were 13%, 15%, and 40%, 54% lower, respectively, than those of untreated fabrics. The presence of FC-dendrimer in the treated fabric was confirmed by FTIR, SEM, EDS and XRD analyses. SEM analysis was employed to study the morphology of deposited FC-dendrimer particles on the fabric surface. Thermal behaviors were evaluated by TGA and DTA. The FC-dendrimer-treated fabric also showed promise as a UV ray absorber, antimicrobial activity, acid resistance and flame retardant property. Overall, the result suggests that FC-dendrimer can be a valuable ingredient in the manufacture of multifunctional products.

scholarly journals Preparation of fluorine-free superhydrophobic and wear-resistant cotton fabric with a UV curing reaction for self-cleaning and oil/water separation

RSC Advances ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 4660-4671
Author(s):  
Yaofa Luo ◽  
Shuang Wang ◽  
Xihan Fu ◽  
Xiaosheng Du ◽  
Haibo Wang ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Uv Curing ◽  
Water Separation ◽  
Wear Resistant ◽  
Curing Reaction ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning

A durable superhydrophobic, self-cleaning cotton fabric based on UV curing was prepared and used in the field of oil/water separation.

Fabrication of superoleophobic cotton fabric for multi-purpose applications

2019 ◽  
Vol 377 (2150) ◽  
pp. 20190129 ◽  
Author(s):  
Balraj K. Tudu ◽  
Aditya Kumar ◽  
Bharat Bhushan
Keyword(s):  
Cotton Fabric ◽  
Water Separation ◽  
Practical Applications ◽  
Wetting Properties ◽  
Stain Resistance ◽  
Mechanical Durability ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning ◽  
Liquid Repellency

Superoleophobicity is of interest for practical applications such as liquid repellency, self-cleaning, stain resistance, anti-bacterial properties and oil–water separation. In this work, the superoleophobic coating on cotton fabric was applied by simple immersion in TiO 2 nanoparticles, perfluorodecyltriethoxysilane and tertraethylorthosilicate solution. Its anti-wetting properties, surface morphology and functionality were characterized. The coated cotton fabric shows superoleophobicity with oil (surface tension more than 27 mN m −1 ) contact angle of 152° and tilt angle of 6°. Furthermore, the superoleophobic cotton fabric was demonstrated to exhibit self-cleaning, stain resistance, mechanical durability, chemical stability, thermal stability, anti-bacterial properties and oil–water separation capabilities. This article is part of the theme issue ‘Bioinspired materials and surfaces for green science and technology (part 2)’.

scholarly journals Strongly Hydrophobic and Superoleophilic PMMA Based Nanocoated Cotton Fabrics

Coatings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 943
Author(s):  
Hua Wang ◽  
Rajnesh Kumar ◽  
Hafeezullah Memon
Keyword(s):  
Fourier Transforms ◽  
Separation Efficiency ◽  
Cotton Fabrics ◽  
Raw Material ◽  
Water Separation ◽  
Aquatic Life ◽  
Nano Coating ◽  
Oil Water Separation ◽  
Oil Water ◽  
Fabric Surface

Oil–water separation is among the critical issues worldwide due to recent massive oil spills. Moreover, domestic and industrial water pollution due to oil discharge affects marine and aquatic life. Cotton is the most predominant fiber globally because of its use as a principal and popular clothing material. Cotton is also the leading raw material for technical and functional textile applications. In this study, the fabric was cured with poly (methyl methacrylate) (PMMA) nanoparticles to develop hydrophobic and oleophilic cotton fabrics. The dehydrating agents, N,N′-dicyclohexylcarbodiimide (DCC) and dimethyl aminopyridine (DMAP), were used to catalyze the esterification. The results proved that the excellent hydrophobicity of modified cotton fabric provides a water contact angle higher than 140°. In addition, Fourier transforms infrared (FTIR) spectroscopy, as well as X-ray photoelectron spectroscopy (XPS) analysis, confirmed the fabric surface modification. Surface morphological analysis by scanning electron microscope (SEM) revealed the uniform rough surface structure of the modified fabric with nano-coating. The modified fabric resulted in the high separation efficiency of oil and water, suggesting this strategy to be suitable for advanced oil–water separation.

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