Novel Vegetable Tanning Techniques by Notholithocarpus densiflorus Extract and Fatliquoring with Indigenous Bovine Fat

The major technical challenge of vegetable tanning is to improve the higher wear-comfort, leather strength and water resistance efficiency in daily necessities products, aiming as an alternative chrome tanning. demonstration has been made by indigenous bovine fat Tanoak tree (Notholithocarpus densiflorus) bark-wood extract for usage process a new kind stuffing technique first time. tannin content maximum was found at 34.25% bark 28.5% wood sample. presence characterized using UV-visible absorption spectroscopy, FTIR spectroscopy HPLC techniques. characterization data revealed mainly catechol pyrogallol wood. techniques tanned showed shrinkage temperature 95±2 °C. Other physical properties such tensile strength, tear grain cracking load, flexing endurance were comparable conventional chrome-tanned leather. cross-sectional morphology thermal degradation leathers FE-SEM TGA which fat-coated compact structure fibres decomposition 100 °C 300 respectively. average contact angle droplet on bark-tanned greater than 100° wood-tanned 88° solid-liquid interface respectively, indicated low wettability These kinds processes will help replace chromium tanning, sustainable approach save environment.