Multifunctional chelating ion-exchange fibers, and preparation method and application thereof

Abstract

The invention provides multifunctional chelating ion-exchange fibers. According to the invention, natural cotton fibers, fibrilia, natural wood fibers, natural bamboo fibers or natural grass fibers, or blend fibers of one selected from the group consisting of atural cotton fibers, fibrilia, natural wood fibers, natural bamboo fibers or natural grass fibers and one selected from the group consisting of polypropylene fibers, acrylic fibers, vinylon, terylene and spandex are used as a fiber based material; the fiber based material is dipped in amino-containing resin emulsion so as to prepare functional fibers whose surface is coated with tertiary amino-containing resin; the tertiary amine functional fibers sequentially react with 5-chloromethyl salicylaldehyde and thiosemicarbazide, and therefore, quaternary ammonium groups and salicylaldehyde thiosemicarbazone are introduced onto the functional fibers which become the multifunctional chelating ion-exchange fibers.

Description

technical field [0001] The invention relates to a chelating ion exchange fiber, in particular to an ion exchange fiber formed by coating the fiber with a chelating resin, which has the functions of detecting, analyzing, separating, enriching and exchanging various water ions, and belongs to the field of functional materials. technical background [0002] Ion exchange fibers are cationic or anionic groups carried on the fiber skeleton interact with anions or cations in the medium through Coulomb attraction to produce adsorption and separation functions respectively. The chelating fiber is a coordination bond formed by the chelating functional group of the N, O, S, P coordination atoms of the base fiber and the metal ion to form a complex, thereby producing a detection, analysis, and separation of the metal ion. , Enrichment function. Chelate fibers have more abundant functional groups and more specific selectivity than ion exchange fibers. Some chelating fibers also have ab...

AI Technical Summary

Problems solved by technology

The functional substances that can be used in hybrid fiber forming technology are rare, and the functional resin is difficult to withstand the conditions of spinning, so it is rare to prepare chelated ion exchange fiber by hybrid fiber forming technology

Single function, low hydrophilicity, complex preparation technology, high cost of raw materials, cumbersome desorption regeneration cycle, etc. are also the defects of existing chelated ion exchange fibers.

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