| 摘要 |
The present invention relates to novel water-swellable fibers, of which at least a part of the fiber outer layer portion is composed of a hydrogel, and which fibers have latent or visualized crimps and combine a high degree of water-swellability with excellent physical properties, and to a process for producing the same. The invention also relates to an industrially advantageous process for producing novel water-swellable fibers, of which at least a part of the fiber outer layer portion is hydrogelled, said process comprising putting a prescribed amount of a specific alkali on fibers composed of an acrylonitrile polymer and then heat-treating the fibers. |
