Publications by authors named "Chantelle L Arnold"
Article Synopsis
- Colored materials are important in technology and nature, but adding color to carbon fibers has usually harmed their properties.
- The researchers used a method to modify carbon fibers, giving them a vibrant blue color and allowing them to change colors when exposed to solvents.
- These treated fibers are stronger, can hold complex shapes, and showed over 300% better adhesion to epoxy resin compared to regular fibers, paving the way for improved smart composites.
Technologies that enable surface modification are in high demand and are critical for the implementation of new functional materials and devices. Here, we describe the first modification of a carbon surface (in this case carbon fiber) using the sulfur-fluoride exchange (SuFEx) reaction. The parent sulfur (VI) fluoride moiety can be installed directly to the surface via electrochemical deposition of the fluorosulfate phenyldiazonium tetrafluoroborate salt, or by 'SuFExing' a phenol on the carbon surface followed by treatment of the material with SO F ; similar to a 'graft to' or 'graft from' functionalization approach.
View Article and Find Full Text PDFTesting methodologies to accurately quantify interfacial shear strength (IFSS) are essential in order to understand fiber-matrix adhesion. While testing methods at a microscale (single filament fragmentation test-SFFT) and macroscale (Short Beam Shear-SBS) are wide spread, each have their own shortcomings. The Iosipescu (V-notch) tow test offers a mesoscale bridge between the microscale and macroscale whilst providing simple, accurate results with minimal time investment.
View Article and Find Full Text PDF