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.

Effect of Etching and Modification on the Hydrophobic Angle of Epoxy/Poss Nanomaterials

2020 ◽  
Vol 15 (12) ◽  
pp. 1502-1507
Author(s):  
Yanhong Fang ◽  
Ping Wang ◽  
Lifang Sun ◽  
Linhong Wang
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Hydrochloric Acid ◽  
Surface Energy ◽  
Stearic Acid ◽  
Acid Etching ◽  
Energy Materials ◽  
Nano Structure ◽  
Low Surface Energy ◽  
Long Time

In this study, simple and feasible methods are used to increase the hydrophobicity of EP-POSS, that is, etching with concentrated hydrochloric acid and concentrated ammonia water, followed by modification with polytetrafluoroethylene and stearic acid. The principle of the study is to increase the hydrophobic angle of EP-POSS by immersion in concentrated hydrochloric acid and concentrated ammonia for a sufficiently long time, followed by modification with low-surface-energy materials, i.e., polytetrafluoroethylene and stearic acid. The contact angle of EP-POSS increased from 100° to 133° after immersing in 3 mol/L hydrochloric acid for 12 min. Compared to hydrochloric acid, the surface roughness and contact angel were not changed significantly by immersing in concentrated ammonia for 4 hours. The contact angle was not changed obviously after immersing in 0.1 mol/L polytetrafluoroethylene for 24 h, and only changed from 135° to 136° when immersed in 0.1 mol/L stearic acid. It shows that PTFE and stearic acid hasn?t effectively grafted to the surface of EP-POSS, and has no effect to the micro-nano structure of EP-POSS. According to the experimental results, hydrochloric acid etching is the proper way to enhance EP-POSS contact angel. According to further investigates, it can be determined that treating EP-POSS at 40 °C for 12 min with 3 mol/L hydrochloric acid can significantly improve its hydrophobicity, thus, the hydrophobic performance of EP-POSS is considerably improved.

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.

scholarly journals A note on the effect of surface topography on adhesion of hard elastic rough bodies with low surface energy

2019 ◽  
Vol 28 (1) ◽  
pp. 8-12 ◽  
Author(s):  
Guido Violano ◽  
Giuseppe Demelio ◽  
Luciano Afferrante
Keyword(s):  
Surface Roughness ◽  
Surface Energy ◽  
Adhesive Contact ◽  
Low Surface Energy ◽  
Surface Gradient ◽  
Self Consistent ◽  
Remarkable Result ◽  
Roughness Amplitude ◽  
Adhesive Interactions ◽  
Effect Of Surface

AbstractAdhesion between bodies is strongly influenced by surface roughness. In this note, we try to clarify how the statistical properties of the contacting surfaces affect the adhesion under the assumption of long-range adhesive interactions.Specifically, we show that the adhesive interactions are influenced only by the roughness amplitude hrms, while the rms surface gradient h0rmsonly affects the non-adhesive contact force. This is a remarkable result if one takes into account the intrinsic difficulty in defining $h_{\mathrm{rms}}^{^{\prime }}.$Results are also corroborated by a comparison with self-consistent numerical calculations.

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.

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

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.

Sign in / Sign up

Export Citation Format

Share Document