Multi-Level Crosslinked Structure Fiber Composite Membrane With Multifunctional Properties: High Strength,...

Area of Science:

• Materials Science
• Nanotechnology
• Polymer Science

Background:

• Developing multifunctional membranes with high strength and electromagnetic interference shielding effectiveness (EMI SE) is challenging.
• Existing materials often lack a balance of mechanical properties, flexibility, and shielding performance.

Purpose of the Study:

• To create a high-performance multifunctional membrane with enhanced strength, flexibility, and EMI SE.
• To explore the synergistic effects of composite structure and crosslinking on material properties.

Main Methods:

• Utilized poly(vinyl alcohol-co-ethylene) (PVA-co-PE) nanofibers and UHMWPE fibers as the base and reinforcement.
• Incorporated 2D reduced graphene oxide (RGO) and 1D silver nanowires (AgNWs) into a cross-network structure.
• Employed electron beam (EB) crosslinking with a crosslinking agent to enhance structural integrity.

Main Results:

• Achieved an excellent EMI SE of 50.3 dB due to an optimized conductive network of RGO and AgNWs.
• Increased tensile strength to 19.7 MPa through synergistic crosslinking and hydrogen bonding.
• Demonstrated significant improvements in environmental stability and thermal management capabilities.

Conclusions:

• The developed composite membrane offers a promising solution for high-performance multifunctional materials.
• The rational design strategy provides guidance for applications in intelligent wearable electronics and thermal therapy.
• The material exhibits excellent EMI SE, mechanical strength, and thermal properties, paving the way for advanced technological applications.