Amidoxime functional fiber material and preparation method thereof

The invention relates to an amidoxime functional fiber material and a preparation method thereof, and belongs to the technical field of functional polymer materials. The functional fiber material is obtained by grafting polyamidoxime onto polyacrylonitrile carboxylic acid fibers through amido bonds formed by part or all carboxyl groups in a polyacrylonitrile carboxylic acid fiber material and amidoxime groups in a polyamidoxime compound, the carboxyl content in the polyacrylonitrile carboxylic acid fiber material is 0.5 mmol/g to 2.0 mmol/g. The surface of the functional fiber material is not curled, the shape is good, the mechanical property of a matrix is not lost, and the adsorption rate is high. Compared with the prior art, the functional fiber material provided by the invention has better mechanical strength under the condition of equal amidoxime group content or theoretically equal amidoxime group content. 本发明涉及一种偕胺肟功能纤维材料及其制备方法，属于功能高分子材料技术领域。所述功能纤维材料由聚丙烯腈羧酸纤维材料中的部分或全部羧基与聚偕胺肟化合物中的偕胺肟基形成的酰胺键，使聚偕胺肟接枝到聚丙烯腈