Silk Sericin As a Green Adhesive to Fabricate a Textile Strain Sensor with Excellent Electromagnetic Shielding Performance

Abstract

Although flexible textile-based electronics and lightweight electromagnetic shielding materials have attracted increasing attention due to their wide application, the seamless integration of textile sensors and electromagnetic shielding materials is still a challenge. Herein, we designed a simple, cost-effective, and environmentally friendly method to fabricate nickel-plated acetate fabrics coated with carbon nanotubes, using silk sericin to disperse carbon nanotubes in water and adsorb abundant nickel ions easily on the surface of carbon nanotubes via hydroxyl groups without other additives. The as-prepared composites exhibited excellent conductivity and electromagnetic interference (EMI) shield effectiveness (>30 dB) at X-band with around 0.8 mm thickness. The low-loading carbon nanotubes could offer more loss mechanism and had a positive effect upon EMI. The conductive textiles had higher tensile strength and negative relative resistance changes in strain, and had a great potential as wearable sensors in response to finger folding and wrist bending. Silk sericin as a green adhesive and dispersant provides an alternative strategy to large-scale produce multifunctional conductive wearable textiles for applications in EMI shielding and/or human-machine interaction.

Fully Printed Stretchable and Multifunctional E‐Textiles for Aesthetic Wearable Electronic Systems

“…In comparison with previous textile-based sensors reported in literature, the sensing performance of PESS is much better (Table 1). [15,23,31,[36][37][38][39] We also test the stability and reliability of the PESS in dynamic sensing under a cyclic stretching/relaxation loading to different strain levels: 15%, 25%, 35%, 45%, and 55% (Figure 6d). Figure 6e shows that the PESS gives the same responses to a specific strain within the strain range of 0-55%, enabling accurate identification of specific motions or gestures.…”

“…[29] Most reported printed e-textiles only demonstrated good flexibility but very low stretchability due to the cracking of conductive layers printed on the textile. [28,[30][31][32] Recently, Someya et al fabricated a printed e-textile with a stretchability of up to 450% by adjusting Electronic textiles (e-textiles) that combine the wearing comfort of textiles and the functionality of soft electronics are highly demanded in wearable applications. However, fabricating robust high-performance stretchable e-textiles with good abrasion resistance and high-resolution aesthetic patterns for highthroughput manufacturing and practical applications remains challenging.…”

Wearable Sweat Biosensors on Sports Analysis

“…The recent tendency of comprehensive evaluation has led to the advent of hybrid biosensors, which can monitor multiple parameters by simultaneously performing electrochemical, colorimetric, and volumetric sensing [33] . Those sensors of several subsystems lead to the high-cost challenge as the difficulty of separating the reusable components from disposable ones and making the majority of wearable biosensors disposable.…”

Advances in the Robustness of Wearable Electronic Textiles: Strategies, Stability, Washability and Perspective

“…The electrically functionalized textile substrate of different forms ranging from fiber/filament to fabric/garment can be achieved via different approaches, i.e., coating (dip-coating [65,66], spray coating [67,68], ultrasonic coating [69,70], knife coating [71,72], spin coating [73,74], etc. ), printing (screen printing [75,76], inkjet printing [77,78], extrusion printing [79,80], gravure printing [81,82], laser printing [83,84], stencil printing [85,86], 3D printing [87,88], etc. ), electrospinning (melt spinning [89,90], dry spinning [91,92], wet spinning [93,94], etc.…”