Electro‐Blown Spun Silk/Graphene Nanoionotronic Skin for Multifunctional Fire Protection and Alarm

Cao, Leitao; Liu, Qiang; Ren, Jing; Chen, Wenshuai; Pei, Ying; Kaplan, David L.; Ling, Shengjie

doi:10.1002/adma.202102500

Cited by 73 publications

(47 citation statements)

References 41 publications

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“…As shown in Figure f, the fire-retardant layer is the first layer toward the outside, followed by a moisture barrier and then heat insulation and comfortable layers. In this work, a piece of as-prepared SFA e-textile (8 × 8 cm) was integrated as an extra layer into firefighting protective clothing between the first and second layers to monitor the surface temperature of the protective clothing in the fireground …”

Section: Resultsmentioning

confidence: 99%

An Ultralight Self-Powered Fire Alarm e-Textile Based on Conductive Aerogel Fiber with Repeatable Temperature Monitoring Performance Used in Firefighting Clothing

et al. 2022

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Firefighting protective clothing is an essential equipment that can protect firefighters from burn injuries during the firefighting process. However, it is still a challenge to detect the damage of firefighting protective clothing at an early stage when firefighters are exposed to excessively high temperature in fire cases. Herein, an ultralight self-powered fire alarm electronic textile (SFA e-textile) based on conductive aerogel fiber that comprises calcium alginate (CA), Fe3O4 nanoparticles (Fe3O4 NPs), and silver nanowires (Ag NWs) was developed, which achieved ultrasensitive temperature monitoring and energy harvesting in firefighting clothing. The resulting SFA e-textile was integrated into firefighting protective clothing to realize wide-range temperature sensing at 100–400 °C and repeatable fire warning capability, which could timely transmit an alarm signal to the wearer before the firefighting protective clothing malfunctioned in extreme fire environments. In addition, a self-powered fire self-rescue location system was further established based on the SFA e-textile that can help rescuers search and rescue trapped firefighters in fire cases. The power in the self-powered fire location system was offered by an SFA e-textile-based triboelectric nanogenerator (TENG). This work provided a useful design strategy for the preparation of ultralight wearable temperature-monitoring SFA e-textile used in firefighting protective clothing.

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Section: Resultsmentioning

confidence: 99%

An Ultralight Self-Powered Fire Alarm e-Textile Based on Conductive Aerogel Fiber with Repeatable Temperature Monitoring Performance Used in Firefighting Clothing

et al. 2022

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“…Preparation of BMAFs: The BMAFs were fabricated and the content of the CaCl 2 was optimized by reference to the previous work. [38,[75][76][77] In the first step, the silk fibroin/PEO solution was prepared. In this process, 0.72 g PEO and 1.5 g CaCl 2 were added to 30 g formic acid and stirred for 1 h, followed by the addition of 2.88 g degummed silk fibers and stirred for another 3 h. Thereafter, the solution was centrifuged at 6000 rpm min −1 for 10 min to remove the insoluble impurities, and a homogenous and transparent RSSF/PEO solution was obtained.…”

Section: Methodsmentioning

confidence: 99%

Natural Silk Spinning‐Inspired Meso‐Assembly‐Processing Engineering Strategy for Fabricating Soft Tissue‐Mimicking Biomaterials

Zhang

Cao

et al. 2022

Adv Funct Materials

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Natural silk spinning is the strategy used by spiders and silkworms to construct their ultra-strong-and-tough silks. It can be considered as an optimized meso-assembly processing engineering (MAPE) strategy that effectively coordinates molecular-and-supramolecular assembly and native spinning. Inspired by this process, this study develops a biomimetic MAPE strategy to fabricate biomaterials mimicking the structural and mechanical characteristics of biological tissues. The structural and mechanical mimetics are realized by synergistically integrating phase transition-induced meso-assembly and mechanical training-induced structural remodeling. Through this approach, highly-hydrated silk fibroin materials with exceptional tunable mechanical properties, such as softness, high stretchability (failure strain larger than 1200%), and high strength and toughness (strength of 5 ± 1 MPa, stiffness 18 ± 2 MPa, and toughness of 6 ± 1 MJ m −3 ) are produced. Thanks to their structural and mechanical tissue-matching features, these biomimetic mesoassembled materials exhibit advances in the modulation of different cell morphologies. The gradient architecture deformation (aspect ratio, spreading area, and perimeter) is evidenced, and the interplay between cytoskeleton (actin and tubulin) and matrix adaptation orientation is substantiated. These findings advance the application of silk fibroin biomaterials in the regulation of adaptive cell reconstruction, since the morphology of cells is the basis for their physiological functions.

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“…[18,19] At present, most of the smart sensors exhibit only a single function for special applications, such as fire warning [20] or humidity response, [21] or they suffer from low sensitivity. [22][23][24] For example, an early fire warning sensor was fabricated by assembling cotton fabric and the conductive ink patterned in parallel. [25] Based on a thermal expansion strategy, a sensitive temperature sensor was designed by exploiting the interparticle distance-dependent transport mechanism in nanocrystal thin films.…”

Section: Doi: 101002/smll202203334mentioning

confidence: 99%

A Dual‐Function Sensor for Highly Sensitive Detection of Flame and Humidity

Zhang

Yang

et al. 2022

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Early warning sensors rapidly monitor critical temperatures, humidity, and fires, which are crucial to reduce or avoid natural disasters in complex environments, such as fire or water disasters. Here, a highly sensitive, readable, and dual‐functional sensor is designed for a fast‐response fire alarm and rapid humidity detection based on sustainable biological films (named MSCG films). The MSCG films are composed of grafted sisal nanofibers (MgC), silk nanofibers, graphene, and citric acid (CA). After crosslinking with CA, MSCG films exhibit good wet strength (i.e., 128.8 MPa) after soaking in 100 °C water, thus confirming that the films would be applicable to a broad temperature range in humid environments. After flame ignition, the MSCG films are rapidly carbonized to activate an alarm sound and a light in the circuit with a fire response time as short as 1 s. It exhibits ultrafast temperature response/recovery time (i.e., 0.1 s/0.3 s) and rapid humidity response time (i.e., 0.9 s). The dual‐functional sensor is further assembled into a versatile sensor system for real‐time monitoring of fire accidents and environmental humidity, which can be integrated into consumer electronics, such as portable laptops and mobile phones.

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Electro‐Blown Spun Silk/Graphene Nanoionotronic Skin for Multifunctional Fire Protection and Alarm

Cited by 73 publications

References 41 publications

An Ultralight Self-Powered Fire Alarm e-Textile Based on Conductive Aerogel Fiber with Repeatable Temperature Monitoring Performance Used in Firefighting Clothing

An Ultralight Self-Powered Fire Alarm e-Textile Based on Conductive Aerogel Fiber with Repeatable Temperature Monitoring Performance Used in Firefighting Clothing

Natural Silk Spinning‐Inspired Meso‐Assembly‐Processing Engineering Strategy for Fabricating Soft Tissue‐Mimicking Biomaterials

A Dual‐Function Sensor for Highly Sensitive Detection of Flame and Humidity

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