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Manufacturing of Three-dimensionally Microstructured Nanocomposites through Microfluidic Infiltration
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Supramolecular Nanoclusters Enable High-Performance and Recyclable Epoxy Resins.

Lei Xu1, Zihan Zhao1, Zhaohua He1

  • 1Beijing Advanced Innovation Center For Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, China.

Advanced Materials (Deerfield Beach, Fla.)
|July 14, 2026
PubMed
Summary

This study introduces a supramolecular nanocluster strategy for high-performance epoxy resins, enhancing mechanical strength and enabling recyclability through built-in catalytic sites for efficient hydrolysis and repurposing.

Keywords:
epoxy resinshigh performancerecyclabilitysupramolecular nanoclusters

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Composite Materials

Background:

  • Epoxy resins are crucial for high-performance composites but face challenges in balancing mechanical properties with recyclability.
  • Current strategies often struggle to achieve both superior performance and environmental sustainability in epoxy thermosets.

Purpose of the Study:

  • To develop a novel supramolecular nanocluster (SNs) strategy for epoxy resins.
  • To simultaneously enhance mechanical properties and achieve recyclability in epoxy-based composites.

Main Methods:

  • Synthesized SNs using cationic polymerization initiated by a Zn2+-based liquid coordination complex.
  • Incorporated SNs into a cross-linked epoxy network, leveraging metal-coordination, hydrogen bonding, and flexible polyether chains.
  • Utilized embedded Zn2+ sites as catalysts for resin hydrolysis.

Main Results:

  • Optimized epoxy resin exhibited a tensile strength of 134 MPa, a modulus of 4.9 GPa, and a 49% increase in fracture toughness.
  • Carbon fiber-reinforced composites showed enhanced tensile and flexural performance.
  • Achieved complete resin hydrolysis within 6 hours at 170°C in water, with products repurposed as sizing agents.

Conclusions:

  • The SNs strategy effectively reconciles the performance-sustainability trade-off in epoxy thermosets.
  • Demonstrated a viable recyclable pathway for high-performance epoxy composites.
  • The developed materials offer a sustainable alternative for advanced composite applications.