scholarly journals High Stability Performance of Superhydrophobic Modified Fluorinated Graphene Films on Copper Alloy Substrates

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Rafik Abbas ◽  
N. Elkhoshkhany ◽  
Ahmed Hefnawy ◽  
Shaker Ebrahim ◽  
Aya Rahal
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Sliding Angle ◽  
Water Contact ◽  
Stability Performance ◽  
Graphene Films ◽  
Superhydrophobic Property ◽  
Self Cleaning ◽  
Fluorinated Graphene ◽  
Highly Hydrophobic

A stable self-cleaning superhydrophobic modified fluorinated graphene surface with micro/nanostructure was successfully fabricated on copper substrates via drop coating process. Irregularly stacked island-like multilayered fluorinated graphene nanoflakes comprised the microstructure. The fabricated films exhibited outstanding superhydrophobic property with a water contact angle 167° and water sliding angle lower than 4°. The developed superhydrophobic surface showed excellent corrosion resistance with insignificant decrease of water contact angle 166° in 3.5 wt.% NaCl solution. This stable highly hydrophobic performance of the fluorinated graphene films could be useful in self-cleaning, antifogging, corrosion resistive coatings and microfluidic devices.

Preparation and Characterization of Superhydrophobic Polypropylene Surface with Excellent Self-Cleaning Property

2011 ◽  
Vol 295-297 ◽  
pp. 1613-1616 ◽  
Author(s):  
Zhi Qing Yuan ◽  
Jun Liang Wu ◽  
Xi Hai Hao ◽  
Xu Nan Wang ◽  
Xun Meng Xu ◽  
...  
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Sliding Angle ◽  
Water Contact ◽  
Artificial Rain ◽  
Self Cleaning

A superhydrophobic polypropylene surface was obtained by a facile method. The water contact angle and sliding angle of the superhydrophobic polypropylene surface were 157±1.8ºand 1.6º, respectively. When the superhydrophobic polypropylene surface was contaminated, 99 % contaminant particles were removed from the superhydrophobic polypropylene surface by artificial rain, showing excellent self-cleaning property.

scholarly journals The potential of using sucrose particles for self-cleaning surface fabrication on recycled high-density polyethylene

2021 ◽  
Vol 2080 (1) ◽  
pp. 012005
Author(s):  
Yee Wen Yap ◽  
Muhammad Salihin Zakaria ◽  
Razif Muhammed Nordin ◽  
Khairul Anwar Abdul Halim ◽  
Bee Ying Lim ◽  
...  
Keyword(s):  
Contact Angle ◽  
Surface Morphology ◽  
Water Contact Angle ◽  
High Density Polyethylene ◽  
Low Cost ◽  
High Density ◽  
Sliding Angle ◽  
Water Contact ◽  
Self Cleaning ◽  
Surface Fabrication

Abstract Degradation properties of recycled plastic causing it less widely used. By adding extra physical properties, its commercial value and usage can be increased. In this current work, green self-cleaning surfaces from recycled high-density polyethylene (rHDPE) were fabricated using sucrose particles. Water contact angle and sliding angle, self-cleaning properties and surface morphology were characterized. Furthermore, the surface texture was also evaluated by conducting a surface roughness test. By creating porosity onto the rHDPE matrix, the surface exhibits an excellent self-cleaning property with a water contact angle larger than 150°. Surface morphology reveals the porosity and roughness of the surface. In this fabricating process, no chemicals were used while rHDPE is selected for the purpose. Hence, the process is environmentally friendly and low cost for self-cleaning surface fabrication.

scholarly journals Transparent superhydrophobic PTFE films via one-step aerosol assisted chemical vapor deposition

RSC Advances ◽  
2017 ◽  
Vol 7 (47) ◽  
pp. 29275-29283 ◽  
Author(s):  
Aoyun Zhuang ◽  
Ruijin Liao ◽  
Sebastian C. Dixon ◽  
Yao Lu ◽  
Sanjayan Sathasivam ◽  
...  
Keyword(s):  
Contact Angle ◽  
Chemical Vapor Deposition ◽  
Water Contact Angle ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Sliding Angle ◽  
Water Contact ◽  
Visible Transmittance ◽  
One Step

Hierarchical micro/nano-structured transparent superhydrophobic polytetrafluoroethylene films with water contact angle 168°, water sliding angle <1° and visible transmittance >90% were prepared on glass via aerosol-assisted chemical vapor deposition.

Fabrication and Characterization of a Superhydrophobic Low-Density Polyethylene Film

2012 ◽  
Vol 557-559 ◽  
pp. 1834-1837
Author(s):  
Jun Liang Wu ◽  
Hui Ping Zhang ◽  
Xu Nan Wang
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Energy Materials ◽  
Water Contact ◽  
Simple Method ◽  
Ldpe Film ◽  
Low Surface Energy ◽  
Special Surface ◽  
Superhydrophobic Property

A superhydrophobic LDPE film was obtained by a simple method in atmosphere without addition of low-surface-energy materials. The water contact angle of the superhydrophobic LDPE film are 155±1.9º. SEM shows that compared with common smooth LDPE film, a porous structure was obviously observed on the superhydrophobic LDPE film. Such a special surface microstructure may result in the superhydrophobic property. The effect of drying temperature and concentration on water contact angle were studied.

Above 170° water contact angle and oleophobicity of fluorinated graphene oxide based transparent polymeric films

Carbon ◽  
2015 ◽  
Vol 84 ◽  
pp. 207-213 ◽  
Author(s):  
T. Bharathidasan ◽  
Tharangattu N. Narayanan ◽  
S. Sathyanaryanan ◽  
S.S. Sreejakumari
Keyword(s):  
Contact Angle ◽  
Graphene Oxide ◽  
Water Contact Angle ◽  
Polymeric Films ◽  
Water Contact ◽  
Fluorinated Graphene ◽  
Fluorinated Graphene Oxide

Top Layer Coating for Improving Superhydrophobic Property of Latex Cup

2017 ◽  
Vol 757 ◽  
pp. 52-56
Author(s):  
Sunisa Jindasuwan ◽  
Sitthisuntorn Supothina
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Field Test ◽  
Rubber Tree ◽  
Contact Angles ◽  
Economic Plant ◽  
Free Energy Surface ◽  
Immersion Method ◽  
Water Contact ◽  
Superhydrophobic Property

A latex cup is used to collect latex from a rubber tree which is an economic plant in Thailand. The fresh latex or crude rubber consists of organic compound and water which can wet and adhere to surface of the collecting cup. In this research, surface of the latex cup was treated with polymethylhydrogen siloxane-functionalized silica compound to improve hydrophobicity so that it could repel the dirt and latex, resulting in an anti-adhesion between the latex and the cup. Surface of the latex cup was etched with 10 % v/v hydrofluoric acid for 30 min before application of the siloxane coating which was performed by immersion in the solution, painting and spraying, respectively. The result revealed that the immersion method exhibited optimum property justified by high value of water contact angle, low surface free energy, surface roughness and the field test. At the optimum polymethylhydrogen siloxane : fumed silica ratio of 3 : 1 wt%, the treated sample had water contact angle of 139.24 ± 0.78 degrees and possessed surface energy of 1.07 mJ/m2. The field test conducted in the rubber field in Trang province revealed good durability of the coating. The water contact angles were 132.15 ± 2.05 and 129.20 ± 2.34 degrees after 2 weeks and 1 month, respectively, of the field service.

Micro-Nanostructured Silicone Rubber Surfaces Using Compression Molding

2018 ◽  
Vol 941 ◽  
pp. 1802-1807 ◽  
Author(s):  
Khosrow Maghsoudi ◽  
Gelareh Momen ◽  
Reza Jafari ◽  
Masoud Farzaneh ◽  
Tony Carreira
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Silicone Rubber ◽  
Surface Characterization ◽  
Contact Angle Hysteresis ◽  
Compression Molding ◽  
Sliding Angle ◽  
Water Contact ◽  
Superhydrophobic Property ◽  
Aluminum Surfaces

A facile method is introduced for production of micro-nanostructured silicone rubber surfaces by means of direct replication using a compression molding system. The fabricated samples possessing surface roughness display water contact angle of more than 160o and contact angle hysteresis (CAH) and sliding angle of less than 5o. Such low surface wettability of silicone specimens verifies the induced superhydrophobic property. Chemically etched aluminum surfaces could work excellently as templates whose patterns were replicated on the rubber surfaces successfully. Various etching conditions were examined. Surface characterization techniques revealed the presence of micro-nanostructures on the produced silicone surfaces.

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