Abstract: A preparation method of a fiber is provided. In the preparation method of the fiber, a polymer is dissolved in a mixing solution of an ionic liquid and a salt to form a spinning viscose, wherein the salt includes KCl, KBr, KOAc, NaBr, ZnCl2 or a combination thereof. Afterwards, the spinning viscose is used as a material to perform a spinning process so as to form a fiber.

Abstract: A preparation method of a fiber is provided. In the preparation method of the fiber, a polymer is dissolved in a mixing solution of an ionic liquid and a salt to form a spinning viscose, wherein the salt includes KCl, KBr, KOAc, NaBr, ZnCl2 or a combination thereof. Afterwards, the spinning viscose is used as a material to perform a spinning process so as to form a fiber.

Abstract: A preparation method of a polysaccharide fiber is provided. The method includes the following steps. First, a polysaccharide material is provided. Next, the polysaccharide material is mixed with an ionic liquid to form a polysaccharide solution. Then, the polysaccharide solution is mixed with a forming liquid to form a formed polysaccharide article. Next, a homogenization treatment is performed on the formed polysaccharide article to form a homogeneous polysaccharide article. Then, the homogeneous polysaccharide article is dried to form a polysaccharide fiber.

Abstract: An ionic liquid, comprising a compound of Formula 1: wherein Ra is a hydrocarbon chain having 2 to 10 carbon atoms and a terminal hydroxyl group and the hydrocarbon chain comprising —O— therein, —CO— therein or comprising both —O— and —CO— therein, Rb is —CxHySO3H, —CxHyPO3H, —CxHyCOOH, —CxHySO3?, —CxHyPO3? or —CxHyCOO?, and x ranges from 1 to 6 and y ranges from 2 to 12.