Highly self-healable and recyclable graphene nanocomposites composed of a Diels–Alder crosslinking/P3HT nanofibrils dual-network for electromagnetic interference shielding

Abstract

In this study, a novel self-healing material with a dual-network composed of cross-linked structure by Diels–Alder (DA) chemistry interconnected with self-assembled π-conjugated polymer nanofibrils was developed for application in electromagnetic...

Flexible Polypyrrole Nanotube–Polyethylene Glycol–Polyvinyl Alcohol Hydrogels for Enhanced Electromagnetic Shielding

“…Even so, the mechanical properties of the composite films are still favorable for the practical applications. In terms of Figure b, our prepared PPPg delivers superior mechanical behavior, as compared to previous works, regarding the maximum stress and the corresponding tensile elastic strain, such as EMIM-TFSI (5 MPa, 31%), CNC/MXene (1.025 MPa, 675%), T 6 PAM (0.819 MPa, 80%), PG5H10 (2.6 MPa, 12%), Fe 3 O 4 /PEDOT: PSS/PVA (0.55 MPa, 850%), RGO-Ga (0.06 MPa, 70%) and PVA/MXene (0.6 MPa, 80%) . After more than 20 times bending and folding, it can be observed that the prepared PPPg-20 still possesses great flexibility (Figure c,d).…”

Structural design underpinning self-healing materials for electromagnetic interference shielding: coupling of dynamic polymer chemistry and electrical conductivity

“…This not only hampers the formation of an EMI shielding conductive network but also adversely affects the mechanical strength and self-healing effect of the composite material. To address this issue, Lee et al 110 developed a novel self-healing EMI shielding material. This material was created by incorporating graphene This journal is © The Royal Society of Chemistry 2024 nanosheets (GNS) into a complex copolymer.…”

Lightweight, Highly Efficient, and Recyclable Absorption-Dominated Electromagnetic Interference Shielding Foams Based on Molecularly Designed Polyamide Elastomer/Carbon Nanotube Nanocomposites

“…To overcome the drawbacks of metal shielding systems, researchers have developed alternative systems. Composite materials composed of a polymeric matrix and conductive fillers, such as carbon fibers, 29,30 carbon black, 31,32 graphene, 33,34 and carbon nanotubes, have been developed for this purpose. 35,36 Composite materials based on carbon allotropes are cheaper, lighter, easier to be processed, and more environmentally stable than metals.…”

“…To overcome the drawbacks of metal shielding systems, researchers have developed alternative systems. Composite materials composed of a polymeric matrix and conductive fillers, such as carbon fibers, , carbon black, , graphene, , and carbon nanotubes, have been developed for this purpose. , Composite materials based on carbon allotropes are cheaper, lighter, easier to be processed, and more environmentally stable than metals. EMI shielding composites involving micropores formation through sc-CO 2 foaming have recently been developed. − These hole-type systems have a microcellular structure, which not only provides them with the advantage of being lightweight but also promotes the arrangement of fillers around cells and mediates multiple reflections of electromagnetic waves within the systems, thereby synergistically enhancing the absorption efficiency of the systems for electromagnetic waves.…”