Well-defined silver conductive pattern fabricated on polyester fabric by screen printing a dopamine surface modifier followed by electroless plating

Mao, Yun Xian; Zhu, Meifang; Wang, Wei; Yu, Dan

doi:10.1039/c7sm02246h

Cited by 58 publications

(37 citation statements)

References 31 publications

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“…[1][2][3] In recent years, electronic textiles, or fiber-based clothing systems have emerged as the ideal platforms for future wearable electronics 4,5 because of their softness, breathability and biocompatibility, compared to other substrates, such as plastic, paper or elastomers 6 . Electronic fabrics composing these devices encompass conductors, 7 resistors, 8 capacitors, 9 transistors, 10 have been demonstrated using metals, 11 polymers 12 or carbon-based materials 13 through various methods of textile integration, such as coating, 14 deposition, 15 spinning, 16 printing, 17 and chemical functionalization. 18 However, the stability of conductive polymer to washing strongly affects the fabric performance.…”

Section: Introductionmentioning

confidence: 99%

Wearable solid-state capacitors based on two-dimensional material all-textile heterostructures

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Wearable solid-state capacitors based on two-dimensional material all-textile heterostructures

et al. 2019

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“…Printing gels were prepared by mixing PEG, TA, (NH 4 ) 2 PdCI 4 , and DI water in different ratios (Table S1, Supporting Information). Compared with normal polymer substrates, textiles endowed with conductive properties provide a more powerful platform for wearable electronics because they are lightweight and skin friendly . Thus, metal patterns are fabricated on textile substrates in this report.…”

Section: Resultsmentioning

confidence: 99%

A Nature‐Inspired, Flexible Substrate Strategy for Future Wearable Electronics

Zhu

Chalmers

Chen

et al. 2019

Small

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Flexibility plays a vital role in wearable electronics. Repeated bending often leads to the dramatic decrease of conductivity because of the numerous microcracks formed in the metal coating layer, which is undesirable for flexible conductors. Herein, conductive textile‐based tactile sensors and metal‐coated polyurethane sponge‐based bending sensors with superior flexibility for monitoring human touch and arm motions are proposed, respectively. Tannic acid, a traditional mordant, is introduced to attach to various flexible substrates, providing a perfect platform for catalyst absorbing and subsequent electroless deposition (ELD). By understanding the nucleation, growth, and structure of electroless metal deposits, the surface morphology of metal nanoparticles can be controlled in nanoscale with simple variation of the plating time. When the electroless plating time is 20 min, the normalized resistance (R/R0) of as‐made conductive fibers is only 1.6, which is much lower than a 60 min ELD sample at the same conditions (R/R0 ≈ 5). This is because a large number of unfilled gaps between nanoparticles prevent metal films from cracking under bending. Importantly, the Kelvin problem is relevant to deposited conductive coatings because metallic cells have a honeycomb‐like structure, which is a rationale to explain the relationships of conductivity and flexibility.

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“…The silver-coated polyimide fiber has good antibacterial activity, high conductivity and reflectivity, the electrical resistance is only 1.5 Ω and the reflectivity reaches 95%. In addition, there have been studies on silver-plated cotton fiber [16,17], kapok fiber [18], polyurethane fiber [19], ultrahigh molecular weight polyethylene fiber [20], polyacrylonitrile nanofibers [21], polyester fiber [22][23][24] and glass fiber [24,25] by employing dopamine surface modification. Regarding aramid fibers, Wang et al [26] prepared silver-plated aramid staple fiber by employing dopamine modification, which has excellent ultrasonic stability, but the staple fiber form limits the practical application of aramid, and also lacks the washing fastness test under standard conditions.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Silver-Plated Para-Aramid Fiber by Employing Low-Temperature Oxygen Plasma Treatment and Dopamine Functionalization

Sun

Zhou

et al. 2019

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Direct electroless silver plating of para-aramid (PPTA) is difficult due to its extremely low surface chemical energy. In order to facilitate the deposition of silver nanoparticles and to enhance the washing fastness, oxygen plasma treatment and dopamine modification were conducted before silver plating of PPTA fibers. Various techniques including scanning electron microscopy (SEM), attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), X-ray diffractometer (XRD) and thermogravimetric analyzer (TGA) were used to characterize the surface morphology, chemical composition and thermal stability of the silver-plated PPTA fibers. Electrical resistance and silver content of the silver-coated PPTA fibers before and after standard washing were also studied. The results showed that silver nanoparticles were successfully coated onto the surface of PPTA fibers with and without plasma treatment, but the coating continuity and the electrical conductivity of the silver-coated PPTA fibers were greatly enhanced with the assistance of plasma treatment. It was also demonstrated that the washing fastness of silver-coated PPTA fibers was improved after plasma treatment as indicated by electrical resistance and continuity of the silver nanoparticles after various washing cycles. It was found that the electrical resistance of plasma-treated PPTA-PDA/Ag fibers prepared at an AgNO3 concentration of 20 g/L reached 0.89 Ω/cm and increased slightly to 0.94 Ω/cm after 10 standard washing cycles. The silver-coated PPTA fibers also showed stable electrical conductivity under 250 repeated stretching-releasing cycles at a strain of 3%.

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Well-defined silver conductive pattern fabricated on polyester fabric by screen printing a dopamine surface modifier followed by electroless plating

Cited by 58 publications

References 31 publications

Wearable solid-state capacitors based on two-dimensional material all-textile heterostructures

Wearable solid-state capacitors based on two-dimensional material all-textile heterostructures

A Nature‐Inspired, Flexible Substrate Strategy for Future Wearable Electronics

Preparation of Silver-Plated Para-Aramid Fiber by Employing Low-Temperature Oxygen Plasma Treatment and Dopamine Functionalization

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