Using of Hyperbranched Poly(amidoamine) as Pretanning Agent for Leather
Figure 6
SEM photos for grain surface (×50) of the chrome-tanned leather before (a) and after (b) pretanning with HPAM polymer and SEM photos (cross-section) of the leather samples (×100) showing leather protein fiber bundles of chrome-tanned leather before (c) and after pretanning with HPAM polymer (d).
