Dendrimer of aminoethylene carbonate as a potential retanning agent of hare skin

Abstract

The hare skin has weak leather tissue, which requires filling and tanning in order to prolong the period of use of products. To strengthen hare skin it was proposed to use aminoethylene carbonate dendrimer, which was first synthesized by the reaction of triethanolamine with dimethyl carbonate. The dendrimer was characterized by 1H NMR and IR spectroscopy, elemental analysis, TGA, SEM and dynamic light scattering. The aminoethylene carbonate molecule contains 6 terminal hydroxyl groups and has a number-average molecular weight of 674 g∙mol-1. The hare skins treated with chrome tanning agent, with and without dendrimer, have close shrinkage temperatures. However, the experimental samples filled with dendrimer show better physical and mechanical properties, higher degree of thickening and ordered dermis structure compared to the control samples. This study shows the effectiveness of using aminoethylene carbonate dendrimer as a retanning agent for hare skin.