Improvement of sanitary pads

This invention ; relates to functional material design aimed at enhancing the performance of hygiene products. It addresses existing challenges by employing layers, coatings, and structural designs that minimize visible color changes following the absorption of menstrual fluid—thereby reducing the visibility of stains—while maintaining comfort, absorption rates, retention capabilities, and overall product performance. Potential approaches include the selective capture of red blood cells or hemoglobin, subsurface transport via multilayered architectures, optical scattering or opacity management, patterned surfaces, and the use of directional or gradient materials. Various methods can be implemented here. These include the use of binders, purification and separation polymers, nanoparticles, and applications leveraging high surface area and particle size effects, as well as the application of nanoporous structures, microspheres, and surface-modifying materials to the surface or intermediate layers of the pads; this facilitates the binding (or sequestration) of hemoglobin or blood cells to these structures, resulting in a cleaner surface appearance. In other words, these are specialized polymeric materials that—thanks to their charge properties and cross-linking architectures—selectively precipitate or retain hemoglobin or blood cells from whole blood without the need for biological antibodies. Consequently, they enable a cleaner and more hygienic user experience for sanitary pads. To address the aforementioned issues, I can propose a collaborative project or partnership focusing on reducing color change, increasing absorption rates, specifically capturing red blood cells or hemoglobin, creating layered structures, and managing multilayered subsurface transport.