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

With the continuous improvement of living standards andadvancementsin science and technology, composite materials with multiple functionalitiesare gaining high practical value in modern society. In this paper,we present a multifunctional conductive paper-based composite withelectromagnetic (EMI) shielding, sensing, Joule heating, and antimicrobialproperties. The composite is prepared by growing metallic silver nanoparticlesinside the cellulose paper (CP) modified with polydopamine (PDA).The resulting CP@PDA@Ag (CPPA) composite has high conductivity andEMI shielding properties. Furthermore, CPPA composites demonstrateexceptional sensing, Joule heating, and antimicrobial properties.In addition, Vitrimer, a polymer with excellent cross-linked networkstructure, is introduced into CPPA composites to obtain CPPA-V intelligentelectromagnetic shielding materials with shape memory function. Theseexcellent properties show that the prepared multifunctional intelligentcomposite has exceptional EMI shielding, sensing, Joule heating, andantibacterial and shape memory properties. In short, this multifunctionalintelligent composite material has great application prospects inflexible wearable electronics.