Research of interaction of ester with ieather method ir-spectroscopy

Аннотация

In the production of upper leather, fatliquoring is a fundamental step, as it provides characteristics such as softness, elasticity and durability. Fatty materials are embedded in the structure of the leather, influencing its properties. This work is a study by the method of IR spectroscopy of the fatliquoring process based on a new fatliquoring agent-ester, absorbed by the leather, and its physical and mechanical characteristics. As a result of research, it was found that when an ester interacts with functional groups of collagens, hydrogen bonds are mainly formed. As a result, it is partially deposited between the fibers, and also combines with the leather substance. In this case, the surface of the fibers is enveloped in a film of fat, which separates them and thereby prevents adhesion during evaporation of water during the drying process of the leather. Researches have established that the use of an ester is possible as a fatty component for the production of natural leather, which leads to a deeper and more even distribution of fat in the dermis. In comparison with other fatty substances, an important point for obtaining an ester is the cost of the product, which is much lower than the cost of the currently used imported fats.