Abstract
Modification of Nitron fibre by incorporation of natural silk wastes (NSW) loosens its structure, which increases the exothermic effect. CaCl2 has the same effect, forming coordination bonds with the functional groups of the copolymer and protein. The volatiles/coke residue (V/CR) ratio shows that the initial fibre has thermal properties close to the fibre treated with a solution of a mixture of CaCl2 and glycerin. The higher value of CR of the fibre treated with a solution of NSW indicates improvement of its thermal properties. The change in the macrostructure of the fibre as a result of treatment with a solution of NSW increases its dyeability and expands the class of dyes used.
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