Disclaimer: This article is an original summary of information published via Phys.org and related institutional research communications and is provided for informational purposes only. This article describes the results of a scientific study published in the journal ACS Sustainable Chemistry & Engineering under DOI: 10.1021/acssuschemeng.5c09378.
Researchers from Monash University have developed a new solvent-free process for producing conductive, easily dispersible graphene, addressing long-standing challenges associated with graphene manufacturing, sustainability, and large-scale application.
Graphene is widely regarded as a transformative material due to its exceptional electrical conductivity, mechanical strength, and lightweight structure. However, conventional methods for modifying and dispersing graphene often rely on toxic solvents, complex chemical treatments, or energy-intensive processes, limiting scalability and environmental compatibility.
The Monash-led research introduces a mechanochemical approach, in which graphene is functionalized using amino-acid-derived nitrogen doping without the use of solvents. The process relies on mechanical energy to drive chemical reactions, enabling graphene sheets to be modified efficiently while preserving their conductive properties.
A key outcome of the method is the production of nitrogen-doped graphene that can be readily dispersed into polymer matrices. This significantly improves its compatibility with advanced composite materials, including vitrimer composites, which are valued for their recyclability and self-healing properties. Unlike traditional graphene processing routes, the new method avoids aggregation and maintains uniform dispersion, which is critical for achieving consistent electrical and mechanical performance.
The study demonstrates that the solvent-free process delivers high yields, reduced environmental impact, and enhanced material performance compared to conventional approaches. The resulting graphene exhibits strong electrical conductivity while supporting scalable manufacturing, making it attractive for applications in electronics, energy storage, conductive coatings, and sustainable composites.
According to the researchers, this work highlights how green chemistry principles and mechanochemical techniques can play a central role in next-generation materials engineering. By eliminating solvents and reducing processing complexity, the approach supports both industrial scalability and environmental responsibility.
The findings underscore the growing potential of sustainable materials innovation to accelerate the adoption of graphene-based technologies across multiple sectors, while aligning advanced manufacturing with climate and sustainability goals.