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Graphene-Oxide-Based Interfacial GO-Polymer Assemblies Stabilize Pickering Emulsions for 3D-Printed Multifunctional
1State Key Laboratory of Organic-Inorganic Composites & Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
ACS Applied Materials & Interfaces
|March 30, 2026
Summary
We developed a scalable method using graphene oxide (GO) and polystyrene (PS) to create freestanding films and 3D printable inks. These materials show tunable mechanical properties and conductivity for electronics and thermal management.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Engineering
Background:
- Graphene oxide (GO)-based materials offer great potential but face challenges in scalable fabrication and integration.
- Freestanding films and complex architectures from GO are difficult to produce efficiently.
Purpose of the Study:
- To develop a scalable platform for fabricating freestanding GO-based films and 3D printable inks.
- To explore the tunable mechanical and electrical properties of these novel materials.
Main Methods:
- Interfacial coassembly of carboxyl-functionalized GO and amine-terminated polystyrene (PS) at the water/toluene interface.
- Stabilization of high-internal-phase Pickering emulsions using GO and octadecylamine (ODA) for direct-ink-writing (DIW).
- Freeze-drying and thermal reduction to create ultralight cryogels and conductive reduced GO.
Main Results:
- Fabrication of large-area, freestanding PS/GO ultrathin films (8-11 nm) with tunable Young's modulus (0.21-0.72 GPa).
- Development of DIW-compatible inks with shear-thinning behavior and shape retention.
- Production of conductive cryogels (297 S·cm-1 electrical, 0.092 W·m-1·K-1 thermal conductivity).
Conclusions:
- Established a scalable, integrated platform combining interfacial self-assembly, emulsion templating, and 3D printing for multifunctional GO-based materials.
- Demonstrated proof-of-concept for applications in soft electronics and thermal management.
- Overcame key challenges in GO material fabrication and integration.
