Abstract:

To solve the problem of inadequate application of polyacrylonitrile (PAN) fibrous materials in the production of industrial textiles, several modification processes of the nitrile groups to coordinating groups including amidoxime, amido, carboxyl and other groups on PAN fiber were firstly introduced in this present work. The reaction models of different modified PAN fiber with transition metal ions or rare earth metal ions and properties of the resulting complexes were then compared. Moreover, the applications of modified PAN fibers in fields of heavy metal ions removal, trace metal ions detections, concentration of rare metal ions and novel metal ions, as well as green catalyst preparation were also reviewed. Finally, the introduction of new coordinating groups, recycle ability and usage of nano-fibrous membranes were regarded as the important developments for promoting the application of PAN fibrous materials in the production of industrial textiles in the future.

Key words: polyacrylonitrile fiber, surface modification, metal ions, coordination