Cirillo Claudia, Iuliano Mariagrazia, Florio Claudia, Fierro Francesca, Gallucci Luca, Maffei Gaetano, Loi Andrea, Scarpa Davide, Sarno Maria
Department of Physics "E.R. Caianiello", University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy.
Centre NANO_MATES, University of Salerno, Via Giovanni Paolo II, 132, 84084, Fisciano, SA, Italy.
Sci Rep. 2025 May 24;15(1):18105. doi: 10.1038/s41598-025-03182-6.
A contemporaneous functionalization of leathers and valorization of metal-free tannery waste was performed by reducing the waste into fine powders through mechanical grinding. The morphology of the milled wastes constited of fibers with diameters of a few microns (1-3 μm) and below. XRD analysis of leather powders confirms that even after the milling treatment, the leathers maintain retains its helical structure. The fibers were added to a finishing ink, and the resulting materials were characterized from different perspectives. The fibers containing finishing allows for better surface preservation, due to well-dispersed nanofibers filling the micropores of the coating, thus reducing the density of defects in the coating itself and improving the rubbing fastness. It should be noted that the presence of milled leather can impart color to the finished leather without requiring additional dyes. This approach results in cost-saving, and, more importantly, has positive environmental and ethical impacts.
通过机械研磨将皮革废料粉碎成细粉，实现了皮革的同步功能化和无金属制革废料的增值利用。研磨后的废料形态由直径为几微米（1 - 3μm）及以下的纤维组成。皮革粉末的XRD分析证实，即使经过研磨处理，皮革仍保持其螺旋结构。将这些纤维添加到涂饰剂中，并从不同角度对所得材料进行了表征。含有纤维的涂饰剂能够更好地保护表面，这是因为纳米纤维分散良好，填充了涂层的微孔，从而降低了涂层本身的缺陷密度，提高了摩擦牢度。需要注意的是，研磨后的皮革的存在可以使成品皮革上色，而无需额外的染料。这种方法既节省了成本，更重要的是，对环境和道德有积极影响。
