DYEING OF POLYESTER, ARAMID AND POLYPROPYLENE FIBERS IN SUPERCRITICAL CO2
Abstract:
Polyethylene terephthalate (PET) and polytrimethylene terephthalate (PTT) fibers as well as difficult-to-dye fibers such as aramid and polypropylene were dyed using supercritical carbon dioxide at pressures between 10 ~ 33 MPa and temperatures between 35 ~ 150 degrees Celsius. Special co-solvents were employed to promote the dye sorption. The equilibrium sorption of dye increased with pressure or density as well as temperature. Dye-sorption was analyzed with a sorption model. Colors other than the three primary colors were obtained by using various amounts of dye mixtures with different dye ratios. The optimum amount of cosolvent was also investigated. These sorption data will provide a basis for replacing the current
dyeing process with the supercritical fluid dyeing process that does not yield any pollution problem but allows us to save a large amount of energy. Furthermore, the sorption model may reduce the required number of experiments considerably, leading to a low initial investment cost for the new dyeing process.
Authors: Jae-Jin Shim,* Jun-Hyuck Choi, Jae-Ho Ju, Bo-Kook Son, Jae-Myoung Ahn,Byung Hee Kim, and Ki-Seok Kim
Publication Year: 2003
Type: pdf
Size: 634KB
Pages: 7
Polyethylene terephthalate (PET) and polytrimethylene terephthalate (PTT) fibers as well as difficult-to-dye fibers such as aramid and polypropylene were dyed using supercritical carbon dioxide at pressures between 10 ~ 33 MPa and temperatures between 35 ~ 150 degrees Celsius. Special co-solvents were employed to promote the dye sorption. The equilibrium sorption of dye increased with pressure or density as well as temperature. Dye-sorption was analyzed with a sorption model. Colors other than the three primary colors were obtained by using various amounts of dye mixtures with different dye ratios. The optimum amount of cosolvent was also investigated. These sorption data will provide a basis for replacing the current
dyeing process with the supercritical fluid dyeing process that does not yield any pollution problem but allows us to save a large amount of energy. Furthermore, the sorption model may reduce the required number of experiments considerably, leading to a low initial investment cost for the new dyeing process.
Authors: Jae-Jin Shim,* Jun-Hyuck Choi, Jae-Ho Ju, Bo-Kook Son, Jae-Myoung Ahn,Byung Hee Kim, and Ki-Seok Kim
Publication Year: 2003
Type: pdf
Size: 634KB
Pages: 7
1 comments:
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