| abstract |
PROBLEM TO BE SOLVED: To collect environmentally friendly fibers such as a reduced amount of carbon dioxide, and to eliminate disadvantages such as wear resistance, which are inferior to products using a polymer derived from biomass as compared with a product using a polymer derived from petroleum. Provide the body. SOLUTION: The cross-sectional shape is a core-sheath shape, the sheath part is composed of a composite fiber composed of a petroleum-derived polymer and the core part is composed of a polymer derived from biomass. , A fiber assembly that is used for any purpose. The sheath of the composite fiber is preferably polyethylene terephthalate and the core is preferably polylactic acid. [Selection figure] None |