A team of researchers from the University of North Carolina has made a groundbreaking discovery in material science and engineering by exploring a new application of flame. The development, known as inverse thermal degradation (ITD), has the potential to revolutionize the creation of materials with predetermined characteristics.
Professor Martin Tuo, co-author of the study, emphasized the significance of fire as an engineering tool but acknowledged the challenges associated with controlling it once ignited. To address this issue, the scientists employed a nanometer coating to regulate the oxygen supply to the material. This innovative approach enables precise control over the heating rate and chemical reactions.
In their experiments, the researchers focused on a specific material, such as cellulose fibers, and applied a nanometer layer of molecules to its surface. While the external coating easily ignites under the influence of fire, it undergoes internal chemical changes, resulting in the formation of a thin layer of glass around the cellulose fibers. This glass barrier restricts the access of oxygen, preventing complete combustion.
“Without the protective layer of ITD, the cellulose fibers would turn into ashes. ITD forms protective carbon tubes that preserve the material,” explained Professor Tuo.
The team successfully demonstrated that they could control the thickness of the carbon tube walls by adjusting the size of the original fibers and regulating the amount of oxygen allowed through the protective layer.
Looking ahead, Professor Tuo stated, “We already have several ideas about the potential applications of this technology, which we will explore in future research.” The scientists are also open to collaborating with the private sector to develop practical applications, including mechanisms for separating oil and water. Such developments would have significant implications for both industries and environmental remediation efforts.