Abstract Nowadays, diverse leather usage conditions and increasing demands from consumers challenge the industry. Traditional manufacturing is facing long-term challenges, including low-value threshold, confined application fields, environmental issues. Leather inherits all biomimetic properties of natural skin such as flexibility, sanitation, cold resistance, biocompatibility, biodegradability...

Currently, the methods to identify leather materials have limitations, and identifying natural types is also relatively complex. In this research, microstructures of four mammalian leathers (cattle leather, pig sheep deer leather), three kinds reptilian (crocodile lizard snake leather) regenerated were characterized by scanning electron microscopy. The spectral curves (from 900 1700 nm) these s...