| abstract |
PROBLEM TO BE SOLVED: To provide a splittable acrylic fiber for obtaining fibril splittable fibers having excellent heat resistance and chemical resistance, split acrylic fibers from split acrylic fibers, and split fibers. A sheet-like material comprising: SOLUTION: Acrylonitrile polymer 50 to 95 50% by weight of a polymer selected from the group consisting of fluororesin, polyethersulfone and polyimide, which is soluble in a solvent of an acrylonitrile-based polymer and is incompatible with the acrylonitrile-based polymer. 5% by weight of splittable acrylic fiber having a streak-like phase-separated structure, split split fiber thereof, and a sheet made of split fiber. |