| 摘要 |
PROBLEM TO BE SOLVED: To provide a fibrillated fiber which has excellent dyeability and further has tension, stiffness, dry touch, swollen touch and soft touch similar to those of a natural fiber, and to provide a fiber structure containing the fibrillated fibers. SOLUTION: This fibrillated fiber which comprises a thermoplastic polyamide containing aromatic dicarboxylic acid units as 60 to 100 mol.% of dicarboxylic acid units, containing aliphatic diamine units as 60 to 100 mol.% of diamine units and having an inherent viscosity of 0.4 to 2.0 and intermittently has fibrils comprising the thermoplastic polyamide in the fiber axial direction is characterized in that the fineness of the fibrils is 0.004 to 0.65 dtex. |
