| Popis: |
The adsorption of two commercial syntans by wool serge was found to occur by virtue of ion-ion forces, Hydrophobic interaction, together with both polar and non-polar forces; the marked contribution that the latter three forces made towards uptake was demonstrated by the finding that adsorption of each syntan followed a BET mechanism. Treatment with each syntan imparted to wool a high degree of resistance towards uptake of four hydrophilic anionic dyes, but a low resist effectiveness towards adsorption of two Hydrophobie anionic dyes, when untreated wool, and wool which had been treated with each syntan, were dyed in competition. Syntan desorption that occurred during dyeing showed that the tanning agents are relatively weakly bound to the fibre; the desorbed syntan exerted a restraining effect on the uptake of all six dyes used. |
