Multifunctional Conductive Material Based on Intelligent Porous Paper Used in Conjunction with a Vitrimer for Electromagnetic Shielding, Sensing, Joule Heating, and Antibacterial Properties

Abstract

With the continuous improvement of living standards and advancements in science and technology, composite materials with multiple functionalities are gaining high practical value in modern society. In this paper, we present a multifunctional conductive paper-based composite with electromagnetic (EMI) shielding, sensing, Joule heating, and antimicrobial properties. The composite is prepared by growing metallic silver nanoparticles inside the cellulose paper (CP) modified with polydopamine (PDA). The resulting CP@PDA@Ag (CPPA) composite has high conductivity and EMI shielding properties. Furthermore, CPPA composites demonstrate exceptional sensing, Joule heating, and antimicrobial properties. In addition, Vitrimer, a polymer with excellent cross-linked network structure, is introduced into CPPA composites to obtain CPPA-V intelligent electromagnetic shielding materials with shape memory function. These excellent properties show that the prepared multifunctional intelligent composite has exceptional EMI shielding, sensing, Joule heating, and antibacterial and shape memory properties. In short, this multifunctional intelligent composite material has great application prospects in flexible wearable electronics.

Effect of Carbon Fiber Paper with Thickness Gradient on Electromagnetic Shielding Performance of X-Band

“…The joule heating properties of carbon fiber paper have significant applications in wearable heaters [ 39 , 40 , 41 , 42 ]. To investigate the Joule heat change, the voltage was controlled using a DC power supply while the temperature change was measured using an infrared imaging recorder.…”

Integrated Ink Printing Paper Based Self‐Powered Electrochemical Multimodal Biosensing (IFP−Multi) with ChatGPT–Bioelectronic Interface for Personalized Healthcare Management

“…We believe that leveraging the structural shape of soft materials allows for the design of sensor devices with diverse structures and shapes, such as bracelets, collars, and more. [ 14 , 29 , 30 , 31 , 32 ] By integrating the sensor components with soft materials in a tailored manner, we can further enhance the sensitivity and stability of the sensors. The IFP −Mult i device demonstrated excellent electrochemical performance, with high areal specific capacitance and energy density.…”

Carbon Nanofibrous Aerogels Derived from Electrospun Polyimide for Multifunctional Piezoresistive Sensors

“…Their potential applications in human health monitoring, electronic skin, intelligent hyperthermia, and human–computer interaction have garnered considerable attention. − Various sensing techniques have been utilized to successfully construct flexible strain sensors based on capacitance type, piezoresistive type, piezoelectric type, triboelectric type, and etc . Among these, the piezoresistive-based flexible strain sensor exhibits sophisticated elastic capabilities and a straightforward production method in locations that conventional metal or semiconductor sensors might not be able to reach. , Wearable piezoresistive sensors have a significant influence on personal safety and health due to their ability to monitor and quantify physiological data produced by human movements and activities. − Simultaneously, it is noteworthy that electromagnetic interference (EMI) derived from a wearable device has a substantial impact on the functionality of wearable electronic devices and robot systems, particularly those comprising very sensitive and precise components. − Hence, there is a pressing demand to develop and produce multifunctional wearable materials with capabilities of capturing human physiological information and shielding the harmful effects of electromagnetic radiation. , …”