Abstract
Superfine down-powder/viscose blend films were prepared and characterized for their dyeing properties. Down-powder with average size of 2.56 µm were suspended in viscose dope and blend films were obtained by solution casting. When the blend films were dyed with acid dye, the dye uptake and K/S values increased with the increase in down-powder content. Amino-acid analyses showed that amino acid component of the down were not affected during the film formation, which confirmed the changes of dye uptake and K/S value.
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