Roll‐to‐Roll Atmospheric Plasma Treatment: A Green and Efficient Process to Improve the Hydrophilicity of a PET Surface

Bonandini, Luca; Barbero, Nadia; Costabello, Katiuscia; Pavan, Chiara; Parisi, F.; Viscardi, G.

doi:10.1002/cssc.200900288

Cited by 15 publications

(7 citation statements)

References 33 publications

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“…Both air atmospheric plasma [14] and excimer lamp [15,16] treatments have been used to activate PET fibrous surfaces yielding hydrophilic species, thereby increasing dyeing affinity, particularly with cationic or basic dyes.…”

Section: Introductionmentioning

confidence: 99%

Dyeing of woven polyester fabric with curcumin: effect of dye concentrations and surface pre‐activation using air atmospheric plasma and ultraviolet excimer treatment

Kerkeni

Behary

Perwuelz

et al. 2012

Coloration Technology

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Dyeing of polyester fabric with curcumin was studied at 90 and 130°C without and with a prior surface activation of polyester fabric using two different ecotechnologies: air atmospheric plasma treatment and ultraviolet excimer lamp at 172 nm. Without surface activation, dyeing with curcumin followed classical disperse dye behaviour, with higher dye uptake at 130°C than at 90°C, and saturation was readily reached at 2% dye owf at 130°C with a colour yield of 22. Surface-sorbed curcumin molecules extracted with ethanol seemed to increase the colour yield values at 90°C dyeing, while at 130°C they decreased the colour yield values. When dyeing was carried out after a prior surface activation of the polyester fabrics, increased colour yield was observed at both dyeing temperatures for the ultraviolet excimer lamp only (with colour yield increasing from 2 to 10 at 90°C and from 22 to 28 at 130°C for a 2% dye owf). Indeed, both surface activation methods yielded hydrophilic species at the polyester fabric fibre surface, which were confirmed by water contact angle, X-ray photoelectron spectroscopy measurements and atomic force microscopy. However, the surface of the polyester fabric activated using plasma lost all of its hydrophilic species, reaching the water contact angle of untreated polyester when subjected to the dyeing conditions. The excimer treatment yields hydrophilic species that are more resistant to high temperature and pressure dyeing.

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Section: Introductionmentioning

confidence: 99%

Dyeing of woven polyester fabric with curcumin: effect of dye concentrations and surface pre‐activation using air atmospheric plasma and ultraviolet excimer treatment

Kerkeni

Behary

Perwuelz

et al. 2012

Coloration Technology

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“…Compared with traditional vacuum or low‐pressure plasma, it is less time‐ and energy‐consuming and can be used as a continuous process since no vacuum or low pressure is required 30, 31. So far, material modifications that have been realized by atmospheric plasma include but are not limited to: enhancement of hydrophilicity,32 increase of crystallinity,33 crosslinking,34 and surface bonding or grafting,35, 36 and so forth. In addition, atmospheric plasma has been used to directly treat electrospun nanofibers to improve their hydrophilicity and adherent properties 37, 38.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric plasma treatment of pre‐electrospinning polymer solution: A feasible method to improve electrospinnability

Shi

Vitchuli

Nowak

et al. 2010

J Polym Sci B Polym Phys

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The electrospinnability of polyethylene oxide (PEO) was manipulated by atmospheric plasma treatment of pre-electrospinning solutions. Conductivity, viscosity, and surface tension of PEO solutions increased after plasma treatment, and the plasma effect remained longer when the solution concentrate increased. Both untreated and treated solutions were then electrospun, and the morphology of the resultant nanofibers was observed by SEM. Atmospheric plasma treatment improved the electrospinnability of PEO solutions and led to less beads and finer diameter distribution in the resultant nanofibers. Additionally, plasma treatment of the pre-electrospinning solutions affected the crystal structure of resultant nanofibers. These results suggest that atmospheric plasma treatment is a feasible approach to improve the electrospinnability of polymer solutions and can used to control the structure of electrospun nanofibers.

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“…Both techniques (coating with SiO 2 and O 2 plasma) are easily scalable and applicable to large‐scale production. [ 30,31 ]…”

Section: Resultsmentioning

confidence: 99%

“…Both techniques (coating with SiO 2 and O 2 plasma) are easily scalable and applicable to large-scale production. [30,31] First, the effect of the SiO 2 coating was tested on a grooved sample and on two untreated aluminum sheets. The former was aged in distilled water and its performance was tested by capillary rise experiments, while the flat sheets were aged in both distilled and saltwater (35 g L −1 ) and the effectiveness of the treatment was evaluated by contact angle measurements.…”

Section: Durability and Surface Functionalizationmentioning

confidence: 99%

Textured and Rigid Capillary Materials for Passive Energy‐Conversion Devices

Alberghini

Morciano

Giardino

et al. 2022

Adv Materials Inter

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Capillarity is omnipresent in nature, being directly involved in the functioning of living systems. [1] Natural porous media can be characterized by stochastic (e.g., soil, sponges) or ordered (e.g., wood, lungs) structures. Their manmade counterparts are numerous and widely adopted in most industries, for instance filters, textiles (woven and nonwoven), absorbents, ceramics, or tissue scaffolds. [2] Engineering the capillary properties of porous materials has been pursued to achieve improved thermal, [3] mechanical, [4] electrical, [5] optical, [6] and biomedical [7] performance. In addition to intrinsically porous materials (e.g., metal organic frameworks [8] ), the recent research has focused on manufacturing processes that can control finely either material addition (e.g., 3D printing [1,9] ) or removal (e.g., laser etching [6,10] ) from bulk materials to design a precise pores architecture.Porous materials with engineered multi-functionalities are particularly desirable for passive energy-conversion devices. These devices typically do not require high quality energy inputs and, due to the absence of moving mechanical parts, require low maintenance, and are cost-effective. Moreover, they are optimal for off-grid installations and, in general, promote the sustainable transition of industries related to the water-energy nexus. [11] These devices can exploit porous capillary media to overcome small hydraulic heads and supply the working fluids throughout the system without the need for active mechanical or electrical components. Applications have been proposed for steam generation, [12] desalination, [13,14] salt precipitation, [15] water sanitation, [16] solar thermal energy harvesting, [6] and cooling, [17] among others. Clearly, optimizing the capillary properties of the porous materials in such passive devices is crucial to enhance their overall performance: poor capillarity may lead to dry-out during continuous evaporative processes, and would significantly limit the maximum achievable device size. [18] Thus, sub-optimal capillary properties would significantly hinder the productivity and scalability of the system overall.Passive energy-conversion devices typically use nonstructured capillary materials, such as paper or commercial textiles, as passive component to move working fluids. [19] These materials, however, offer limited degrees of optimization given Passive energy-conversion devices based on water uptake and evaporation offer a robust and cost-effective alternative in a wide variety of applications. This work introduces a new research avenue in the design of passive devices by replacing traditional porous materials with rigid capillary layers engraved with optimized V-shaped grooves. The concept is tested using aluminum sheets, which are machined by femtosecond laser and covered by silica or functionalized by oxygen plasma to achieve stable long-term capillary properties. The durability of the proposed material is experimentally evaluated when functioning with aqueous salt concentrations: both the ...

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Roll‐to‐Roll Atmospheric Plasma Treatment: A Green and Efficient Process to Improve the Hydrophilicity of a PET Surface

Cited by 15 publications

References 33 publications

Dyeing of woven polyester fabric with curcumin: effect of dye concentrations and surface pre‐activation using air atmospheric plasma and ultraviolet excimer treatment

Dyeing of woven polyester fabric with curcumin: effect of dye concentrations and surface pre‐activation using air atmospheric plasma and ultraviolet excimer treatment

Atmospheric plasma treatment of pre‐electrospinning polymer solution: A feasible method to improve electrospinnability

Textured and Rigid Capillary Materials for Passive Energy‐Conversion Devices

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