| abstract |
PROBLEM TO BE SOLVED: To provide a sea-island structure in which aliphatic polyester and polyamide are uniformly and finely dispersed and blended, and to improve the adhesion at the sea-island interface, to have excellent wear resistance, and to provide high quality fibers. A fiber capable of providing a structure is provided. SOLUTION: A synthetic fiber composed of a polymer alloy containing an aliphatic polyester resin (A), a thermoplastic polyamide resin (B) and a compatibilizer (C), wherein the component A is an island component. A fiber having a sea-island structure in which component B forms a sea component, and the domain size of the island component is 0.001 to 3 μm. [Selection figure] None |