ポリエステル/ポリエーテル型ブロックコポリマーフィルムの分散染料染着性
1986 年 42 巻 9 号 p. T499-T506
詳細
1986 年 42 巻 9 号 p. T499-T506
Poly (tetramethylene terephthalate) (4GT)-poly (tetramethylene oxide) (PTMO) block copolymer films were either annealed at various temperatures ranging from 130-190°C or drawn at 25°C with the draw ratios ranging from 1.0-7.0. These films were dyed at 80°C with C. I. Disperse Yellow 7 (Y-7) and p-Aminoazobenzene (PAAB). The equilibrium dye sorption (Mo) of Y-7 and PAAB by the annealed films increased with an increase in the crystallinity (Cv). Mo of Y-7 by the drawn films increased during drawing; similarly the Cv values of the drawn films slightly increased with draw ratios (λ). The change in Mo of these disperse dyes was analyzed in terms of the mosaic-block dyeing model by use of fine structural data of the block copolymer films. It was suggested that the change in Mo with increasing Cv depended on the dyeability of amorphous side region between the crystalline cores located parallel to the molecular axis. In the case of the drawn films, the increase in Mo of Y-7 with λ is ascribed to the increase in the fraction of inter-fibrilar tie chains in the side region; these chains would have a strong affinity particularly to a long rodlike dye molecule such as Y-7. The increase in Ms is probably associated with the orientation of the amorphous chain in the side region.
