Preparation of silver-plated polyimide fabric initiated by polyaniline with electromagnetic shielding properties

Abstract

A novel and efficient method for the electroless silver plating polyimide fabric was developed with electromagnetic shielding properties. Firstly, polyaniline (PANi) was in situ polymerized with ammonium persulfate used as oxidizing agent. Secondly, Ag+ was in situ reduced to Ag0 by PANi, and the electroless silver plating was initiated by Ag0 used as active center. Fourier transform infrared, scanning electron microscopy, X-ray diffraction, contact angle analysis and energy dispersive spectroscopy were used to characterize the composite fabric. It could be observed that silver layer-coated polyimide fabric was compact and uniform with surface resistance about 0.02 Ω/sq. The thermal stability was evaluated by thermogravimetric analysis. The as-prepared fabric had excellent anti-corrosion, tensile strength and fastness. The shielding effectiveness of this fabric could reach 54–90 dB, which implied it was a good candidate as electromagnetic shielding materials in many fields.

An electrically conductive hybrid polyaniline/silver-coated polyester fabric for smart applications

“…However, the absorbance bands of PANI overlapped with the absorbed bands of polyester. In the PAN3Ag sample, the peaks at 1474 cm −1 and 1550 cm −1 were attributed to the C–N and C=N groups in the benzenoid and quinoid structures in PANI [38]. Therefore, the spectrum contained both PANI and polyester peaks, indicating that aniline was polymerized on the surface of the polyester fabric to a certain degree.…”

“…Textile fabrics have been coated with the composites of a conducting polymer and silver for different purposes, such as electromagnetic interference shielding [33–36], antimicrobial properties [33,37], and production of conductive fabrics [31]. In this regard, we can point to the coating of the polyester fabric with PANI that is followed by the electroless silver plating initiated by the in situ reduction of PANI [33], the composite coating of PANI/silver on polyimide and cellulosic fabrics [31,38], and the composite coating of polypyrrole/silver on poly(ethylene terephthalate), polyimide, cotton and wool fabrics [35,39–41]. According to the results of the mentioned investigations, it seems that further research into the production of composite-coated fabrics with the optimum electrical conductivity properties, as well as the properties related to the wearing performance, is needed.…”

High‐electromagnetic‐shielding cotton fabric prepared using multiwall carbon nanotubes/nickel–phosphorus electroless plating

“…After a large amount of pioneering work, the surface of the fiber can be pretreated or modified with polyaniline, polypyrrole, polydopamine, etc., which improves the compactness of metal plating layer as well as adhesion between metal and substrate . For example, the electromagnetic shielding fabric prepared by Wang and co‐workers using polyaniline‐modified fabric substrate and initiating electroless silver plating has good fastness . Multilayer copper ammonium fabric/polypyrrole/copper composites prepared by Zhao et al .…”

A new study on the influencing factors and mechanism of shielding effectiveness of woven fabrics containing stainless steel fibers

“…With the development of electronic industry, people's life is flooded with a large number of electromagnetic waves, which endangers human health and interferes with the operation of electronic equipment, thus leading to the increasing demand for radiation-proof functional textiles. Recent research papers on electromagnetic shielding effectiveness (EMSE) mainly focus on technology of electromagnetic shielding (EMS) materials [1][2][3][4][5], influencing factors [6][7][8][9][10][11][12], or calculation [12][13][14][15][16]. The blended metal fabric-EMS has so many advantages in price, technology maturity, EMS performance, and wear ability that it has become one of the most widely used EMS fabrics [7].…”