Chemical composition of wool
In the elemental composition of wool fibers, in addition to carbon, hydrogen, oxygen and nitrogen, it also contains a certain amount of sulfur. The content of each element of wool felt is certain due to the type of wool, feeding conditions, the position of the sheep body, etc. Differently, the change in sulphur content is most obvious.
The analysis results show that the fineness of wool is different, and the sulfur content is different. As the diameter of wool increases, the sulfur content decreases. In a wool ‘}, the flake contains sulfur with the highest fit, the cortical layer with the lowest medullary layer. In the cortical layer, P-cortical cells have higher sulphur content than 0 cortical cells.
It can be clearly seen from Table I-I that in the amino acid composition of the wool protein, the diterpene amino acids and the diamino amino acids have higher praise, followed by sulfur-containing amino acids, and especially the high content of proline. Therefore, there are more salt bonds and disulfide bonds in addition to hydrogen bonds between the skin chain of the wool protein and the same skin chain.