Thermal and dynamic mechanical analysis of bovine hide

摘要: Dynamic mechanical and thermal analysis has been used to investigate the effects of chrome tanning on viscoelastic properties an indigenous Kenyan Boran bovine hide. It shown that this technique can be assess leather-making processes final leather. From results, each process leather making customized for certain application fields. For instance, enhance storage modulus (E′), shear stress (σ) stability at all frequencies temperatures while decreases loss (E″), factor, viscosity (η) strain (e). All exhibited dispersion with two distinct frequency ranges: 0.1–30 30–100 Hz. The become less dependent higher than 30 Hz. Tanning enhances E″ lower 30 Hz but lowers dominant elastic nature hides implies majority energy is dissipated by deformation. investigated showed increase temperature before drastic drops specific temperatures. noted tanned hide stores more residue stress, its molecular chains are easier slide over other when shearing forces applied compared pickled