Rapid physical preparation of a superhydrophobic surface on copper foil without low-surface-energy materials coating

2021 ◽  
Vol 11 (1) ◽  
pp. 93-99
Author(s):  
Jian Wang ◽  
Hong Chen ◽  
Xinyuan Li
Keyword(s):  
Surface Energy ◽  
Superhydrophobic Surface ◽  
Copper Foil ◽  
Traditional Approach ◽  
Substrate Surface ◽  
Copper Surface ◽  
Energy Materials ◽  
New Approach ◽  
Low Surface Energy ◽  
Physical Preparation

A method is proposed to directly obtain superhydrophobic properties by depositing a coating made of candle soot upon the copper foil surface. The process to prepare a surface of superhydrophobicity is simple and rapid, which was performed just by placing the copper foil over the flame of a burned candle for no more than 10 minutes. The surface contact and slide angles of water were 159° ± 1.8° and 2°, respectively. Furthermore, the wettability on the copper surface of superhydrophobicity was also investigated. We found that the copper superhydrophobic surface prepared by the method had excellent superhydrophobicity for water; acid, alkali and salt solutions; and other liquids. In contrast to the traditional approach to prepare superhydrophobic surfaces, the method proposed in this study not only did not damage the mechanical properties of the substrate surface but also did not require low surface energy materials to be modified. This study provides a new approach for the protection of copper and other metallic materials.

scholarly journals A Novel Synthetic UV-Curable Fluorinated Siloxane Resin for Low Surface Energy Coating

Polymers ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 979 ◽  
Author(s):  
Chunfang Zhu ◽  
Haitao Yang ◽  
Hongbo Liang ◽  
Zhengyue Wang ◽  
Jun Dong ◽  
...  
Keyword(s):  
Surface Energy ◽  
Photoelectron Spectroscopy ◽  
Contact Angles ◽  
Proton Nuclear Magnetic Resonance ◽  
Energy Materials ◽  
Uv Curable ◽  
X Ray ◽  
Low Surface Energy ◽  
Low Concentrations ◽  
Siloxane Polymers

Low surface energy materials have attracted much attention due to their properties and various applications. In this work, we synthesized and characterized a series of ultraviolet (UV)-curable fluorinated siloxane polymers with various fluorinated acrylates—hexafluorobutyl acrylate, dodecafluoroheptyl acrylate, and trifluorooctyl methacrylate—grafted onto a hydrogen-containing poly(dimethylsiloxane) backbone. The structures of the fluorinated siloxane polymers were measured and confirmed by proton nuclear magnetic resonance and Fourier transform infrared spectroscopy. Then the polymers were used as surface modifiers of UV-curable commercial polyurethane (DR-U356) at different concentrations (1, 2, 3, 4, 5, and 10 wt %). Among three formulations of these fluorinated siloxane polymers modified with DR-U356, hydrophobic states (91°, 92°, and 98°) were obtained at low concentrations (1 wt %). The DR-U356 resin is only in the hydrophilic state at 59.41°. The fluorine and siloxane element contents were investigated by X-ray photoelectron spectroscopy and the results indicated that the fluorinated and siloxane elements were liable to migrate to the surface of resins. The results of the friction recovering assays showed that the recorded contact angles of the series of fluorinated siloxane resins were higher than the original values after the friction-annealing progressing.

scholarly journals Superhydrophobic engineering materials provide a rapid and simple route for highly efficient self-driven crude oil spill cleanup

RSC Advances ◽  
2018 ◽  
Vol 8 (67) ◽  
pp. 38363-38369 ◽  
Author(s):  
Hongbo Xu ◽  
Shulong Bao ◽  
Liuting Gong ◽  
Renping Ma ◽  
Lei Pan ◽  
...  
Keyword(s):  
Surface Energy ◽  
Crude Oil ◽  
Rough Surface ◽  
Oil Spill ◽  
Material Surface ◽  
Energy Materials ◽  
Simple Route ◽  
Low Surface Energy ◽  
Oil Spill Cleanup ◽  
Crude Oil Spill

Traditional superhydrophobic material use depends on two processes: creating a rough structure on a material surface and modifying the rough surface with low surface energy materials.

Effect of an Organically Modified Nanoclay on Low-Surface-Energy Materials of Polybenzoxazine

2008 ◽  
Vol 29 (14) ◽  
pp. 1216-1220 ◽  
Author(s):  
Huei-Kuan Fu ◽  
Chih-Feng Huang ◽  
Shiao-Wei Kuo ◽  
Han-Ching Lin ◽  
Ding-Ru Yei ◽  
...  
Keyword(s):  
Surface Energy ◽  
Energy Materials ◽  
Low Surface Energy ◽  
Organically Modified

scholarly journals Bioinspired super-hydrophobic fractal array via a facile electrochemical route: preparation and corrosion inhibition for Cu

RSC Advances ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 265-276
Author(s):  
Robert H. B. Miller ◽  
Yinsha Wei ◽  
Cong Ma ◽  
Longyun Li ◽  
Jihan Shao ◽  
...  
Keyword(s):  
Surface Energy ◽  
Corrosion Protection ◽  
Corrosion Inhibition ◽  
Energy Materials ◽  
Hydrophobic Surfaces ◽  
Low Surface Energy

Super-hydrophobic surfaces (SHS) usually are formed from a combination of low surface energy materials and micro/nanostructures via two-step approaches, and they have promising applications in material corrosion protection.

scholarly journals Nonthermal Plasma Treatment Improves Uniformity and Adherence of Cyclodextrin-Based Coatings on Hydrophobic Polymer Substrates

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1056
Author(s):  
Greg D. Learn ◽  
Emerson J. Lai ◽  
Horst A. von Recum
Keyword(s):  
Surface Energy ◽  
Photoelectron Spectroscopy ◽  
Substrate Surface ◽  
Nonthermal Plasma ◽  
Energy Substrates ◽  
Low Surface Energy ◽  
Lap Shear ◽  
Plasma Effects ◽  
Coating Uniformity ◽  
And Performance

Low surface energy substrates, which include many plastics and polymers, present challenges toward achieving uniform, adherent coatings, thus limiting intended coating function. These inert materials are common in various applications due to favorable bulk, despite suboptimal surface, properties. The ability to functionally coat low surface energy substrates holds broad value for uses across medicine and industry. Cyclodextrin-based materials represent an emerging, widely useful class of coatings, which have previously been explored for numerous purposes involving sustained release, enhanced sorption, and reversible reuse thereof. In this study, substrate exposure to nonthermal plasma was explored as a novel means to improve uniformity and adherence of cyclodextrin-based polyurethane coatings upon unreceptive polypropylene substrates. Plasma effects on substrates were investigated using contact angle goniometry and X-ray photoelectron spectroscopy (XPS). Plasma impact on coating uniformity was assessed through visualization directly and microscopically. Plasma effects on coating adhesion and bonding were studied with mechanical lap-shear testing and XPS, respectively. Substrate surface wettability and oxygen content increased with plasma exposure, and these modifications were associated with improved coating uniformity, adhesion, and interfacial covalent bonding. Findings demonstrate utility of, and elucidate mechanisms behind, plasma-based surface activation for improving coating uniformity, adherence, and performance on inert polymeric substrates.

Improving adhesion of acrylic waterborne PSAs to low surface energy materials: Introduction of stearyl acrylate

2010 ◽  
Vol 48 (22) ◽  
pp. 5030-5039 ◽  
Author(s):  
Amaia Agirre ◽  
Julia Nase ◽  
Elise Degrandi ◽  
Costantino Creton ◽  
José M. Asua
Keyword(s):  
Surface Energy ◽  
Energy Materials ◽  
Low Surface Energy

Fluorinated 2-Vinylcyclopropane Copolymers as Low Surface Energy Materials

2001 ◽  
Vol 169 (1) ◽  
pp. 303-312 ◽  
Author(s):  
G. Galli ◽  
M. Ragnoli ◽  
M. Bertolucci ◽  
C.K. Ober ◽  
E.J. Kramer ◽  
...  
Keyword(s):  
Surface Energy ◽  
Energy Materials ◽  
Low Surface Energy

Superamphiphobic surfaces

2014 ◽  
Vol 43 (8) ◽  
pp. 2784-2798 ◽  
Author(s):  
Zonglin Chu ◽  
Stefan Seeger
Keyword(s):  
Surface Roughness ◽  
Surface Modification ◽  
Surface Energy ◽  
Energy Materials ◽  
Low Surface Energy

Progress in superamphiphobic surfaces, including the characterization, different techniques towards the fabrication of surface roughness and surface modification with low-surface-energy materials as well as their applications, is reviewed.

scholarly journals Towards a Long-Chain Perfluoroalkyl Replacement: Water and Oil Repellent Perfluoropolyether-Based Polyurethane Oligomers

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1128
Author(s):  
Liying Wei ◽  
Tugba D. Caliskan ◽  
Philip J. Brown ◽  
Igor Luzinov
Keyword(s):  
Surface Energy ◽  
Film Surface ◽  
Energy Materials ◽  
Low Surface Energy ◽  
One Step ◽  
Pet Film ◽  
Oil Repellent ◽  
Macromolecular Architecture ◽  
End Group ◽  
Long Chain

Original perfluoropolyether (PFPE)-based oligomeric polyurethanes (FOPUs) with different macromolecular architecture were synthesized (in one step) as low-surface-energy materials. It is demonstrated that the oligomers, especially the ones terminated with CF3 moieties, can be employed as safer replacements to long-chain perfluoroalkyl substances/additives. The FOPU macromolecules, when added to an engineering thermoplastic (polyethylene terephthalate, PET) film, readily migrate to the film surface and bring significant water and oil repellency to the thermoplastic boundary. The best performing FOPU/PET films have reached the level of oil wettability and surface energy significantly lower than that of polytetrafluoroethylene, a fully perfluorinated polymer. Specifically, the highest level of the repellency is observed with an oligomeric additive, which was made using aromatic diisocyanate as a comonomer and has CF3 end-group. This semicrystalline oligomer has a glass transition temperature (Tg) well above room temperature, and we associate the superiority of the material in achieving low water and oil wettability with its ability to effectively retain CF3 and CF2 moieties in contact with the test wetting liquids.

scholarly journals Robust Superhydrophobic Surface on Polypropylene with Thick Hydrophobic Silica Nanoparticle-Coated Films Prepared by Facile Compression Molding

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3155
Author(s):  
Oyunchimeg Erdene-Ochir ◽  
Doo-Man Chun
Keyword(s):  
Contact Angle ◽  
Surface Energy ◽  
Alkaline Medium ◽  
Superhydrophobic Surface ◽  
Thick Layer ◽  
Scratch Test ◽  
Superhydrophobic Surfaces ◽  
Sliding Angle ◽  
Hydrophobic Silica ◽  
Low Surface Energy

Superhydrophobic surfaces have been extensively studied for their unique interfacial interaction between water and the surface, and they can be used for self-cleaning, drag reduction, anti-icing, and other applications. To make the superhydrophobic surfaces, nano/microscale structures and a low surface energy should be realized. The development of a durable superhydrophobic surface was hindered by the vulnerability of the surface to mechanical contact. To improve the robustness of the superhydrophobic surface toward mechanical damage, the hydrophobic polypropylene (PP) surface was coated with a thick layer of hydrophobic silica nanoparticles (SNPs) using a simple compression molding process. The thick layer consists of SNPs and PP, and the roles of SNPs and PP are nano/microscale structures with a low surface energy and binder for nanoparticles, respectively. This revealed improvement in the superhydrophobic tendency, with an apparent contact angle of about 170° and a sliding angle of less than 5°. The morphology and the corresponding elemental analysis of the PP/SNPs coated films were investigated using field emission scanning electron microscopy and energy-dispersive spectrometry. The mechanical durability of the superhydrophobic surface was evaluated by the scotch tape test and scratch test with sandpaper. The coated films with SNPs showed the superhydrophobic behavior after 25 tape tests. In addition, the coated films with SNPs showed a contact angle greater than 150° and a sliding angle less than 10° after a 100-cm scratch test with 1000 grit sandpaper, under a weight of 500 g, on an area of 40 × 40 mm2. The chemical stability of PP/SNPs coated films was also investigated in acidic, neutral, and alkaline medium solutions. The films showed good stability under the acidic and neutral medium solutions even after 24 h, but an alkaline medium could damage the surface. The obtained results demonstrated the robustness of the superhydrophobic coating with SNPs.

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