Flexible grid-mesh electrodes fabricated by electroless copper plating on corona-treated PET substrates and coating with graphene for transparent film heaters

Kim, Bu-Jong; Park, Jong-Seol; Yoo, Ria; Park, Jin-Seok

doi:10.1039/c7ra09921e

Cited by 11 publications

(6 citation statements)

References 31 publications

(22 reference statements)

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“…However, most polymeric packaging materials have low surface energy because they lack hydrophilic groups. Thus, corona treatment to increase the surface energy and adhesion to the barrier coating solution has been applied to PET films for multilayered film formation 23 …”

Section: Introductionmentioning

confidence: 99%

“…Thus, corona treatment to increase the surface energy and adhesion to the barrier coating solution has been applied to PET films for multilayered film formation. 23 The current study was designed to develop PET films coated with for 60 and 30 min, respectively. The mean particle size of MMT was measured via dynamic light scattering using a nano-ZS nanosize analyzer (Malvern, Worcestershire, UK).…”

Section: Introductionmentioning

confidence: 99%

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Barrier and structural properties of polyethylene terephthalate film coated with poly(acrylic acid)/montmorillonite nanocomposites

Lim

Lee

et al. 2020

Packag Technol Sci

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Food packaging is one of the most important parts of the food industry, and polyethylene‐based polymers have been widely used as food packaging films. In this study, corona‐treated polyethylene terephthalate (PET) films were used to increase adhesion to the barrier coating solution for multilayered film formation and various concentrations of montmorillonite (MMT; 0, 1, 3, and 5 wt.%) were used to improve the barrier properties of PET films for food packaging after different treatments of MMT including ultrasonication with bath or probe and 100‐W or 300‐W microwave to evenly disperse MMT. Among them, a 300‐W microwave treatment was most effective for size reduction of MMT particles. Even though 5 wt.% MMT was used to coat PET films with polyacrylic acid (PAA), good transmittance in the visible region (500 nm) was obtained, with a value similar to that of the neat PET film. The dispersion of MMT and binding of PAA/MMT nanocomposites were confirmed by field‐emission scanning electron microscopy, X‐ray diffraction, and Fourier transform infrared spectroscopy analyses. The water vapor and oxygen barrier properties of PET films were enhanced by PAA coating. Moreover, the oxygen permeability of PET films decreased via coating by PAA blended with 1 and 3 wt.% MMT. Based on these results, the PET film coated with PAA/MMT nanocomposites could be applied as food packaging films that require high gas barrier properties for oxygen‐sensitive food.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Barrier and structural properties of polyethylene terephthalate film coated with poly(acrylic acid)/montmorillonite nanocomposites

Lim

Lee

et al. 2020

Packag Technol Sci

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“…[2][3][4] This class of electrodes is of interest in a variety of engineering applications, spanning from soft actuators and sensors, to flexible electronics and batteries. [5][6][7] As research and development in the areas of soft robotics [8][9][10] and smart wearable devices [11,12] is surging, manufacturing of flexible electrodes will further grow in importance in the years to come.…”

Section: Introductionmentioning

confidence: 99%

Plating of Ion‐Exchange Membranes: A Molecular Dynamics Study

Truszkowska

Boldini

Porfiri

2022

Advcd Theory and Sims

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Electroless plating of membranes offers a viable pathway to create flexible electrodes for soft sensors and actuators, as well as flexible electronics and batteries. Ionic polymer metal composites are a promising class of active materials, realized through electroless plating of ion‐exchange membranes. The plating and electrode‐membrane interface play a key role on their performance, but computational tools to inform the selection of the plating material and optimize the plating process are currently lacking. Here, this gap is filled through the study of the electrode‐membrane interface in different types of ion‐exchange membranes via molecular dynamics simulations. Both commercially available cation‐ and research‐grade anion‐exchange membranes are studied here. For platinum coating, it is predicted that cation‐exchange membranes will have a superior interface than anion‐exchange membranes, in terms of metal penetration into the membrane, reliability of actuation performance, and interface stability. The results are in line with previous endeavors documenting the higher stability of the interface for cation‐ than for anion‐exchange membranes, easier plating processes, and better electrochemical performance when working with cation‐exchange membranes. The proposed computational framework offers a versatile environment for testing different types of coatings for specific membranes, toward optimizing the performance of electrochemical devices with plated flexible electrodes.

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“…However, the circuit lines used in current flexible devices are manufactured primarily by direct metal depositions through evaporation, sputtering, and electroplating. [22][23][24] In addition, the flexible circuit boards require high conductivity and negligible resistance change during repeated bending cycles, and also request patternability with a high degree of freedom in pattern design. [25][26][27][28] Similar many studies utilizing the microcracks of metal films for the uses as piezoresistive strain sensors and large-area stretchable electrodes.…”

Section: Introductionmentioning

confidence: 99%

Transparent Omni‐Directional Stretchable Circuit Lines Made by a Junction‐Free Grid of Expandable Au Lines

et al. 2021

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Although various stretchable optoelectronic devices have been reported, omni‐directionally stretchable transparent circuit lines have been a great challenge. Cracks are engineered and fabricated to be highly conductive patterned metal circuit lines in which gold (Au) grids are embedded. Au is deposited selectively in the cracks to form a grid without any junction between the grid lines. Since each grid line is expandable under stretching, the circuit lines are stretchable in all the directions. This study shows that a thin coating of aluminum on the oxide surface enables precise control of the cracks (crack density, crack depth) in the oxide layer. High optical transparency and high stretchability can be achieved simultaneously by controlling the grid density in the circuit line. Light‐emitting diodes are integrated directly on the circuit lines and stable operation is demonstrated under 100% stretching.

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Flexible grid-mesh electrodes fabricated by electroless copper plating on corona-treated PET substrates and coating with graphene for transparent film heaters

Abstract: Graphene-coated Cu mesh electrodes for transparent flexible film heaters have been successfully fabricated on corona-treated PET substrates via solution processes.

Cited by 11 publications

References 31 publications

Barrier and structural properties of polyethylene terephthalate film coated with poly(acrylic acid)/montmorillonite nanocomposites

Barrier and structural properties of polyethylene terephthalate film coated with poly(acrylic acid)/montmorillonite nanocomposites

Plating of Ion‐Exchange Membranes: A Molecular Dynamics Study

Transparent Omni‐Directional Stretchable Circuit Lines Made by a Junction‐Free Grid of Expandable Au Lines

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