Preparation method of collagen fiber, collagen fiber, and application of collagen fiber

Abstract

A preparation method for a collagen fiber, a collagen fiber, and a use. The method comprise the following steps: (1) spinning stock solution preparation: soaking a collagen material in a dissolving solution having a pH value of 3.5 to 5.5 for dissolution, and adjusting the pH value to 9.9 to 12.5, thereby forming a spinning stock solution; and (2) nascent fiber preparation: enabling the spinning stock solution to enter a coagulation bath having a pH value of 4.4 to 6.8 for coagulation and spinning, thereby forming nascent fibers. By means of multiple times of pH value adjustment, a collagen salting-out environment is formed, and the collagen fiber having spinnability is prepared by means of wet spinning.

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