Bulletin of
Vitebsk State
Technological
University

Abstract

The aim of this study is to modify polyacrylonitrile (PAN) fibers based on a copolymer of acrylonitrile (AN), methyl acrylate (MA), and 2-acrylamide-2-methylpropanesulfonic acid (AMPS) by introducing the bactericidal agent catamine AB into poly[AN-co-MA-co-AMPS] spinning solutions. Model fiber samples were produced using the dimethylformamide method. It was found that introducing catamine AB into the fiber structure via the spinning solution has no significant effect on the cross-sectional shape, morphological properties, or strength of the resulting PAN fibers. The modified PAN fibers exhibit significantly greater shrinkage and slightly higher elongation at break compared to the control sample.

Modification of PAN fibers with catamine AB results in an inversion of their ability to be dyed with cationic dyes to their ability to be dyed with anionic dyes. This is manifested by a decrease in the selectivity coefficient (SC) of the cationic dye and an increase in the SC of anionic dyes modified with fibers based on poly[AN-co-MA-co-AMPS].

It was found that PAN fibers and materials based on them modified with catamine AB (at the spinning solution preparation stage), unlike control samples, exhibit 100% antimicrobial activity against strains of St. aureus and E. coli at spinning solution concentrations of 0.5, 1.0, and 2.5 % (wt.).

Thus, the introduction of catamine AB into the structure of PAN fibers allows not only the creation of products with antimicrobial activity but also their dyeing with anionic dyes mixed with wool fibers.

Modification of polyacrylonitrile fibers by catamine AB