Aqueous and Air‐Compatible Fabrication of High‐Performance Conductive Textiles

Wang, Xiaolong; Yan, Casey; Hu, Hong; Zhou, Feng; Guo, Ruisheng; Liu, Xuqing; Xie, Zhuang; Huang, Zhifeng; Zheng, Zijian

doi:10.1002/asia.201402230

Cited by 36 publications

(41 citation statements)

References 35 publications

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“…More recently, several advances in polymer‐assisted ELD16, 17, 18 have been accomplished for the fabrication of highly conductive metal structures for flexible and stretchable interconnects,19, 20, 21, 22 supercapacitors,23, 24 conductive textiles,25, 26 and optoelectronic devices 27, 28. The polymer‐assisted ELD typically involves three major steps: surface modification of functional polymer anchoring layers, loading of catalyst moieties to the polymer anchoring layer by ion exchange, and site‐selective metal electroless deposition.…”

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confidence: 99%

“…The surface modification of PET (50 µm thick) with PMETAC polymers was carried out according to the procedures described in our previous study 25, 35. In a typical experiment, the PET substrate was first treated with air plasma for 5 min, which was followed by coating a layer of vinyltrimethoxysilane (VTMS) via silanization (Figure S1, Supporting Information).…”

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confidence: 99%

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Microfluidic Patterning of Metal Structures for Flexible Conductors by In Situ Polymer‐Assisted Electroless Deposition

Liang

Zhou

et al. 2016

Advanced Science

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A low‐cost, solution‐processed, versatile, microfluidic approach is developed for patterning structures of highly conductive metals (e.g., copper, silver, and nickel) on chemically modified flexible polyethylene terephthalate thin films by in situ polymer‐assisted electroless metal deposition. This method has significantly lowered the consumption of catalyst as well as the metal plating solution.

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Microfluidic Patterning of Metal Structures for Flexible Conductors by In Situ Polymer‐Assisted Electroless Deposition

Liang

Zhou

et al. 2016

Advanced Science

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“…Therefore, the metal‐PDMS sponge conductors are highly flexible in 3D. What is more, compared with our previous studies on the fabrication of metal‐PU sponges, in the present study, a more environmental‐friendly yet efficient method is also applied to directly functionalize the PDMS substrate with PMETAC polymers, that is, a recently developed, low‐cost, air compatible, and scalable in situ copolymerization process …”

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confidence: 87%

3D Stretchable, Compressible, and Highly Conductive Metal‐Coated Polydimethylsiloxane Sponges

Liang

Yang

et al. 2016

Adv Materials Technologies

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propyl-methacrylate] P(METACco -MPTS) were fi rst attached to the surface of PU sponges by hydrolysis via a grafting onto method, followed by catalyst loading via ion exchange process and metal plating by electroless metal deposition (ELD) process, forming 3D-internected conductive networks of metals. Despite the fruitful realization of highly conductive 3D composites, precisely controlling the molar ratio between METAC and MPTS as well as the viscosity of the polymer solutions are required. Besides that, since a hydrolysis step is involved, a dry storage of polymers as well as the preparation of their solutions in dry condition are needed. In addition, the metal-PU sponges are required to be packaged by infusing with viscous PDMS pre-polymers in order to obtain good performances of stretchability and compressibility. Therefore, it is still highly desirable to develop more convenient methods to fabricate 3D conductive composite materials.To address this need, herein, we report a low-cost, solutionprocessed, versatile approach to fabricate 3D fl exile conductors from PDMS sponges by a combination of surface modifi cation with poly[2-(methacryloyloxy)ethyl-trimethylammoniumchloride] (PMETAC) polymers and consequent electroless metal deposition. Notably, PDMS sponges are one particular type of 3D-interconnected porous structures, which are made of elastomeric materials. Hence, not only the material itself can be stretched, but also the sponge-like structures are highly stretchable. Therefore, PDMS sponges are one type of materials and structures that are particularly suitable for the fabrication of electrically conductive 3D stretchable and compressible electrodes or interconnects. In the present study, pieces of PDMS sponges prepared by using a conventional sugar-templating method were fi rst functionalized with vinyltrimethoxysilane (VTMS) by a silanization process, followed by a typical in situ free radical polymerization step with METAC. The as-made PMETAC-PDMS sponges were then used as 3D-interconnected porous structures for solution-processed electroless metal deposition, leading to the formation of metal-coated PDMS sponges. To validate this method, we have successfully fabricated Cu-, Ag/Cu-, and Au/Cu-PDMS sponges as well as the fl exible circuits to light up light-emitting diode (LED) arrays with good electric conductivity and mechanical stability, such as stretchability and compressibility. Our results show that the resistance of the as-fabricated composite almost maintains a constant under a large number of cycles (up to 5000) of repeated stretching and compressing deformation. The key novelty of this method is that thin layers of metal structures are directly fabricated on a fl exible sponge structures made of elastic PDMS materials. Therefore, the metal-PDMS sponge conductors are highly fl exible in 3D. What is more, compared with our previous studies Flexible electronics, a disruptive technology that is emerging toward a wide variety of new applications, such as wearable electronics, fl exible display...

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“…There are various methods to metalize PET surfaces, such as physical vapor deposition, magnetron sputtering, chemical vapor deposition, and electroplating plating . But there are no chemical bonds or other tethering force between copper and PET substrate, which fabricated via the above‐declared approaches.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the inherently poor adhesion between metal particles and polyester represents a bottleneck in its widespread application under usable conditions, knowledge, and mechanism of the interface of Cu/PET system remain insufficient . Additionally, for PET substrates with particular 3D structure, such as PET fabrics, uniformity and continuity of the deposited metal films by physical vapor deposition and chemical vapor deposition will be affected by the 3D structure as a spatial mask, which will lead to poorly containable electro‐conductivity …”

Section: Introductionmentioning

confidence: 99%

Durable, Washable, and Flexible Conductive PET Fabrics Designed by Fiber Interfacial Molecular Engineering

Liu

Guo

Shi

et al. 2016

Macro Materials & Eng

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Abstract:Conductive fibres and fabrics are an essential part of wearable electronics and devices.How to fabricate durable conductive substrate is still a huge challenge to the application and commercialization of wearable electronics. Here we report an effective and economic process to obtain conductive yarns and fabrics localized copper plating onto synthesized polymers: poly(ethylene terephthalate) (PET). The active interface was created via plasma treatment to generate active chemical groups on PET substrate, which reacted with ATRP initiator for the following polymerization. The Pd ion entrapped by polymer brushes are then reduced in situ and the Pd 0 species act as a catalytic seed layer for following electroless copper nanoparticles growth on the active interface. Scanning electron microscopy (SEM), X-ray diffraction (XRD), Field Emission Gun Scanning Electron Microscopy (FE-SEM) and Atomic force 2 microscopy (AFM) were used to characterize the samples in this process, and the copper loading was quantified by weight. The morphology and composition analysis show that the copper coating on PET fabrics is compact and continuous, which leads to excellent electronic conductivity. The copper coating obtained in this polymer brushes bridged process can pass through the hand washing challenge, and shows excellent adhesion with PET substrate.

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Aqueous and Air‐Compatible Fabrication of High‐Performance Conductive Textiles

Cited by 36 publications

References 35 publications

Microfluidic Patterning of Metal Structures for Flexible Conductors by In Situ Polymer‐Assisted Electroless Deposition

Microfluidic Patterning of Metal Structures for Flexible Conductors by In Situ Polymer‐Assisted Electroless Deposition

3D Stretchable, Compressible, and Highly Conductive Metal‐Coated Polydimethylsiloxane Sponges

Durable, Washable, and Flexible Conductive PET Fabrics Designed by Fiber Interfacial Molecular Engineering

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