Gas discharge plasma treatment of poly(ethylene glycol-<i>co</i>-1,3/1,4 cyclohexanedimethanol terephthalate) for enhanced paint adhesion

Salapare, Hernando S.; Cosiñero, Hannah Shamina O.; Suarez, Beverly Anne T.; Bacaoco, Miguel; Nuñez, Julius Andrew P.; Guittard, Frédéric; Ramos, Henry J.

doi:10.1116/1.4949867

Cited by 8 publications

(7 citation statements)

References 41 publications

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“…In recent years, plasma technologies have been widely used, due to its ability to modify the surface chemistry and surface morphology of a material by taking advantage of the presence of complex mixtures of ions, electrons, atoms, and radical species in the plasma [11,12].…”

Section: Introductionmentioning

confidence: 99%

Cupric Oxide Nanostructures from Plasma Surface Modification of Copper

et al. 2019

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Taking inspiration from the hydrophilic and superhydrophilic properties observed from the nanostructures present on the leaves of plants such as Alocasia odora, Calathea zebrina, and Ruelia devosiana, we were able to synthesize cupric oxide (CuO) nanostructures from the plasma surface modification of copper (Cu) that exhibits hydrophilic and superhydrophilic properties. The Cu sheets were exposed to oxygen plasma produced from the P300 plasma device (Alliance Concept, Cran-Gevrier, France) at varying power, irradiation times, gas flow rates, and pulsing duty cycles. The untreated and plasma-treated Cu sheets were characterized by contact angle measurements, scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) to determine the changes in the surface of Cu before and after plasma treatment. Results showed that plasma-treated Cu sheets exhibited enhanced wetting properties compared to untreated Cu. We attributed the decrease in the measured water contact angles after plasma treatment to increased surface roughness, formation of CuO nanostructures, and transformation of Cu to either CuO2 or Cu2O3. The presence of the CuO nanostructures on the surface of Cu is very useful in terms of its possible applications, such as: (1) in antimicrobial and anti-fouling tubing; (2) in the improvement of heat dissipation devices, such as microfluidic cooling systems and heat pipes; and (3) as an additional protection to Cu from further corrosion. This study also shows the possible mechanisms on how CuO, CuO2, and Cu2O3 were formed from Cu based on the varying the plasma parameters.

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Section: Introductionmentioning

confidence: 99%

Cupric Oxide Nanostructures from Plasma Surface Modification of Copper

et al. 2019

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“…Several silanes were used as monomers, improving the adhesion of the paint under monomer-deficient conditions. Improved adhesion in the cases mentioned here are attributable to increases in surface roughness and decreases in surface contact angle induced by the treatments, which lead to increased covalent, van der Waal's or hydrogen bonding 4 .…”

Section: Introductionmentioning

confidence: 83%

“…Irradiation of poly(ethylene glycol-co-1,3/1,4 cyclohexanedimethanol terephthalate (PETG) using H 2 and CF 4 plasmas typically increased surface roughness and decreased surface contact angles as measured by profilometry and goniometry, respectively 4 . Paint adhesion was strongest when wettability and work of adhesion were increased.…”

Section: Introductionmentioning

confidence: 99%

Plasma Treatment of Crosslinked Polyethylene Tubes for Improved Adhesion of Water-based Paints

et al. 2018

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Cold plasmas fed trichloromethane-argon mixtures were used to treat cross-linked polyethylene (PE) to improve the adhesion of water-based paint. The effects of the plasma treatment undertaken at different percentages of CHCl 3 in the plasma feed, C Cl , were investigated using Infrared Spectroscopy in Diffuse Reflection (DR) mode, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray Photoelectron Spectroscopy (XPS), goniometry for surface contact angle measurements, profilometry for roughness measurements, and paint adhesion tests. All the treatments modify the surfaces by introducing chlorine. Oxygen is present in the bulk and on the surfaces of the treated and untreated material. The treatments do not alter the bulk, but tend to increase the surface roughness and contact angle. When CHCl 3 is present in the plasma subsequent paint adhesion is improved from a very poor classification of 4 to an excellent classification of 0 (assessed according to the appropriate Brazilian standards (BS EN ISO 2409:2007 and BS 3900-E6:2007A)). Surface roughness is not increased at low C Cl but improved paint adhesion occurs for all C Cl > 0. Although the causes of the improved paint adhesion with the plasma treatment are unclear, they may be related to the plasma activation of unsaturated carbon and oxygen functionalities.

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“…As such, dropwise condensation has been shown to yield higher heat transfer rate than filmwise condensation. For materials used in heat transfer applications such as metals and alloys, dropwise condensation is achieved by altering the wettability of the surface by means of micro machining, laser texturing, etching, deposition, or plasma treatment [25–48]. This may then be followed by a modification procedure using a material of low surface energy.…”

Section: Introductionmentioning

confidence: 99%

Influence of surface modification on droplet mobility during dropwise condensation

Balbarona

Denoga

SalapareIII

2022

Materialwissenschaft Werkst

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A two‐step surface fabrication technique is used to modify the wetting characteristics of copper sheets for heat transfer application. It consists of oxygen plasma treatment that results in the formation of surface nanostructures, and a post‐functionalization process using self‐assembled monolayers. The copper samples are characterized by contact angle measurements, scanning electron microscopy, and atomic force microscopy. Results show that surface roughness, described using hybrid and functional roughness parameters, varies with irradiation power. The plasma‐treated copper samples become superhydrophobic with water contact angles ranging from 150° to 160° after the post‐functionalization. Condensation experiments are conducted to explore the influence of surface wettability on condensate formation. Results show that droplets formed on the superhydrophobic copper sheets are smaller and more mobile with sweep events that are 9x more frequent compared to those on untreated copper sheets. Sweep events are shown to be influenced by surface porosity, which is defined using standard roughness parameters. It is demonstrated that higher surface porosity results to higher sweep interval.

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Gas discharge plasma treatment of poly(ethylene glycol-co-1,3/1,4 cyclohexanedimethanol terephthalate) for enhanced paint adhesion

Cited by 8 publications

References 41 publications

Cupric Oxide Nanostructures from Plasma Surface Modification of Copper

Cupric Oxide Nanostructures from Plasma Surface Modification of Copper

Plasma Treatment of Crosslinked Polyethylene Tubes for Improved Adhesion of Water-based Paints

Influence of surface modification on droplet mobility during dropwise condensation

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