Electrosprayed superhydrophobic PTFE: a non-contaminating surface

Burkarter, E.; Saul, Cyro Ketzer; Thomazi, Fabiano; Cruz, Nilson Cristino da; Zanata, Sı́lvio M.; Roman, Lucimara S.; Schreiner, W. H.

doi:10.1088/0022-3727/40/24/027

Cited by 36 publications

(25 citation statements)

References 22 publications

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“…Publications that concentrate on PTFE/aerogel composites more frequently adopt dry mixing of PTFE particles with aerogels [ 19 ], wet mixing using aqueous PTFE dispersion [ 5 ] or PTFE powder [ 7 , 20 ] for engineering applications. Applying electrospray technique to fabricate PTFE porous materials has been carried out to investigate superhydrophobic behavior of the materials [ 21 , 22 ]. Previous research on electro-sprayed PTFE layers filled with carbon microparticles emphasized the surface properties including roughness, electrical property, and hydrophobicity [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Transport Properties of Electro-Sprayed Polytetrafluoroethylene Fibrous Layer Filled with Aerogels/Phase Change Materials

et al. 2020

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This work is the first attempt to prepare microporous polytetrafluoroethylene (PTFE) fibrous layers embedded with aerogels/phase change materials. For preparation of this layer, the needle-less electrospray technology of water dispersion of individual components is used. Microstructure characteristics, including surface morphology and particle size distribution, and various properties of the prepared materials were investigated and explained. Transport performance of the fibrous layers embedded with aerogels/phase change materials, such as the transmission of heat, air, and water vapor was evaluated and discussed in details. It was found that the electro-sprayed materials composed by spherical particles with rough surface had compact disordered stacking structure. Aerogels and phase change materials (PCMs) play different roles in determining structural parameters and transport properties of the materials. Those parameters and properties could be flexibly adjusted by optimizing the spinning parameters, changing the content or proportion of the fillers to meet specific requirements.

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Section: Introductionmentioning

confidence: 99%

Transport Properties of Electro-Sprayed Polytetrafluoroethylene Fibrous Layer Filled with Aerogels/Phase Change Materials

et al. 2020

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“…7. Superhydrophobic coating for the production of selfcleaning materials was electrospray -deposited from fine PTFE particles of the size 50-500 nm suspended in water [43,44]. 8.…”

Section: Electrostatic Deposition Of Nanothin Films On Metal Substratementioning

confidence: 99%

Electrostatic deposition of nanothin films on metal substrate

Jaworek¹,

Sobczyk²,

Krupa³

et al. 2009

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. Thin solid film has been deposited by electrohydrodynamic spraying (electrospraying) onto a metal substrate. Electrospraying is a low-energy physical process in which tangential stress exerted by electric field on the surface of a liquid flowing form a capillary nozzle causes jet elongation, and the Coulomb repulsive forces disintegrate of this jet into fine droplets. By this method TiO2, ZnO, MgO, or Al2O3 particles of size from 20 to 100 nm electrosprayed from a colloidal suspension were deposited onto a stainless steel substrate. The advantage that electrospray has over other methods for thin solid film production is that the growth rate of the layer is relatively high, the process can be carried out in an ambient atmosphere, in air or other gas, and at low temperature, without the need for a complex reactor and vacuum systems.

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“…6,7 Traditionally, superhydrophobic metallic surfaces * Author for correspondence (lucrezia.belsanti@ge.ismar.cnr.it) were obtained combining micro/nanostructures with low surface energy materials.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical behaviour of superhydrophobic coating fabricated by spraying a carbon nanotube suspension

et al. 2015

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In this study, superhydrophobic films were prepared through a spraying process of carbon nanotube (CNT) suspension on aluminium alloy substrate and characterized by scanning electronic microscope (SEM) contact angles (CAs) and potentiodynamic polarization tests in 0.1 M NaCl solution. Results indicate the positive effect of superhydrophobic film on the CA (>160 • ) in comparison with the bare metal due to the high porosity density at the surface caused by the presence of CNTs. The electrochemical observations indicate the presence of a positive shift of E corr that confers a better corrosion resistance of the coated samples.

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Electrosprayed superhydrophobic PTFE: a non-contaminating surface

Cited by 36 publications

References 22 publications

Transport Properties of Electro-Sprayed Polytetrafluoroethylene Fibrous Layer Filled with Aerogels/Phase Change Materials

Transport Properties of Electro-Sprayed Polytetrafluoroethylene Fibrous Layer Filled with Aerogels/Phase Change Materials

Electrostatic deposition of nanothin films on metal substrate

Electrochemical behaviour of superhydrophobic coating fabricated by spraying a carbon nanotube suspension

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