Investigating the Internal Structure of Sheep Wool Hair Fiber Using New Microscopic Techniques

The study utilizes new electron microscopy techniques, specifically Serial Block-Face Scanning Electron Microscopy (SBF-SEM), to investigate the internal structure of sheep wool hair fibers. The research focuses on understanding the complex architecture of wool fibers, particularly the role of para- and ortho-cortical cells in determining the curliness of the fibers. Preliminary results show that curly wool fibers have a high percentage of orthocortex, while straight fibers have a narrow ring of orthocortex with paracortex in the middle. This research aims to expand knowledge on hair fiber development, with potential applications in biobased materials and insights into human hair health.