Reviewed by Lexie CornerNov 1 2024
Researchers from Queen Mary University of London have made a major breakthrough in sustainable electronics by developing new nanocomposite films made from starch instead of petroleum-based materials, according to a study published in Advanced Functional Materials.
Pieces of corn and a bowl of corn starch. Image Credit: Queen Mary University of London
The research showcases the development of electrically conductive, flexible, and biodegradable materials with potential applications in electronics and sensing. These starch nanocomposites offer tunable mechanical and electrical properties, providing an eco-friendly alternative to petroleum-based materials.
In response to the global demand for sustainable electronics, this breakthrough marks a significant step toward reducing e-waste and supporting environmentally friendly alternatives. The newly developed nanocomposite films are made from starch—an abundant natural polymer found in plants like potato, maize, pea, and corn—and MXene, a highly conductive 2D material produced in-house. These films can be customized for a range of uses, including monitoring body movement, tactile sensing, and electronic smart skins.
Notably, the starch-based films decompose within a month when buried in soil, a major advancement over traditional non-biodegradable plastics. By adjusting MXene concentrations, researchers achieved precise control over the films’ mechanical properties, electrical conductivity, and sensing capabilities, enabling tailored applications across sectors such as wearable technology and healthcare.
The sustainability of these composites is further enhanced by using abundant, natural materials and a production process that relies on water as a solvent.
Our findings have shown that sustainable electronics can be achieved through these starch-based nanocomposites, offering not just an environmentally friendly solution but also practical applications in flexible electronics.
Ming Dong, Study Lead Researcher, School of Engineering and Materials Science, Queen Mary University of London
A Path Toward Green Electronics
This work represents a significant leap forward in addressing the global challenge of e-waste. By using abundant and biodegradable materials, we are opening up new avenues for sustainable electronics. These starch-based composites offer a solution that merges environmental responsibility with high-performance sensing and electronics capabilities.
Dimitrios Papageorgiou, Study Corresponding Author and Lead Academic, Queen Mary University of London
The research team suggests that these advancements could pave the way for electronic devices that contribute to a more sustainable and circular economy, reducing environmental impact rather than adding to it.
Journal Reference:
Dong, M., et. al. (2024) Transient Starch-Based Nanocomposites for Sustainable Electronics and Multifunctional Sensing. Advanced Functional Materials. doi.org/10.1002/adfm.202412138