Teste de resistência com dinamômetro do couro de ovino cru, tratado por salga, por alúmen de potássio e submetido à irradiação

Abstract

This work aims to demonstrate, through dynamometer testing, the mechanical difference between raw sheepskin and sheepskin treated by salting, potassium alum (popularly known as alum stone), and irradiation. Treatments using salting and potassium alum are the most commonly used, especially in the traditional method, for tanning the leather of various animal species. For the experiment, a single whole hide with wool, also known as a sheepskin, from a mixed-breed ewe approximately eight months old was used. This hide was washed, stretched, and sun-dried before twenty homogeneous pieces were removed from the central part of the hide. These samples, measuring 3cm wide and 7cm long each, were divided into four groups: control, salted, potassium alum, and irradiated. After the application of the treatments, for the digital dynamometer test to be effectively carried out, each sample was divided into three, so that they obtained 1 cm wide and 7 cm long each. At the end of the digital dynamometer tests, the data were statistically processed using the ANOVA (analysis of variance) method.The ANOVA showed that there was no statistically significant difference, considering only the test with the digital dynamometer, in the application of the treatments.