Abstract
To know the effects of introducing Cr ion on the quality of tetoron, the change of strength and elongation of Cr treated fiber, and their absorbabilty of dyestuff were measured.
Ig. of tetoron was treated in 40ml of the aqueous solution containing 0.6g of K2Cr2O7 and 0.98g of H2SO4 at 125°C for different periods of time. The drop of the strength of the treated tetoron was found to be 3%, while that of elongation was 14% in comparison with those of untreated fiber.
The absorbability of dyestuff, Sunchromine Pure Blue B extra, by Cr treated Tetoron seems to be proportional to the Cr concentration of Tetoron fiber.
These experiments show that introduction of Cr ion to Tetoron may bring about the improvement in dyeing without causing heavy destruction.
