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 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 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.

Robust superhydrophobic TiO2@fabrics for UV shielding, self-cleaning and oil–water separation

2015 ◽  
Vol 3 (6) ◽  
pp. 2825-2832 ◽  
Author(s):  
J. Y. Huang ◽  
S. H. Li ◽  
M. Z. Ge ◽  
L. N. Wang ◽  
T. L. Xing ◽  
...  
Keyword(s):  
Water Separation ◽  
Uv Shielding ◽  
Potential Applications ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning

Multifunctional robust TiO2@fabrics with special wettability demonstrated potential applications for excellent UV shielding, effective self-cleaning, efficient oil–water separation and microfluidic management.

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 Low Temperature Curable Polyaniline/Bio-based polybenzoxazine Coated Cotton Fabric with Superior UV shielding and Oil-water Separation behaviours

2021 ◽  
Author(s):  
Prabunathan P ◽  
M. Alagar
Keyword(s):  
Low Temperature ◽  
Cotton Fabric ◽  
Separation Efficiency ◽  
Curing Temperature ◽  
Water Separation ◽  
Surface Protection ◽  
Uv Shielding ◽  
Oil Water Separation ◽  
Oil Water ◽  
Coated Cotton

Abstract The present work detailsabout the low temperature curingbehaviour of bio-benzoxazine (C-ddm) prepared using cardanol and diaminodiphenylmethane (ddm)in the presence of polyaniline (PANI). Interestingly, it was found that the curing temperature (Tp) of the benzoxazine monomer (C-ddm) has significantly reduced to 227 ºC from 271 ºC with the incorporation of 2wt% of PANI. The plausible curing mechanism of benzoxazine ring catalysed by PANI was also discussed. Further, the resulted PANI/poly(C-ddm) matrices possessa marginally improvedvalues of glass transisition temperature and char yield. Further, PANI/poly(C-ddm) coated cotton fabric was studied for its UV shielding and surface properties. Furthermore, the UV shielding and surface behaviours of PANI/poly(C-ddm) coated cotton fabrics were explored. The PANI/poly(C-ddm) coated cotton fabric delivered UPF rating as high as 50 + and water contact angle value of162°. In addition, the PANI/poly(C-ddm) coated cotton fabric wasverified for its oil-water separation behavior. It was observed that the PANI/poly(C-ddm) coated cotton fabric offered97.5 % separation efficiency with enhanced flux value of about 6450 L/m2h flux.Thus, the obtained results suggest that the PANI/poly(C-ddm) can be used some of the industrial and environmental surface protection applications.

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