Abstract
In this study, amino hyperbranched polymers (HBP)-grafted polyacrylonitrile (PAN) fiber was prepared through an amidation reaction in an autoclave. The prepared PAN-G-HBP fiber can complex Ag+ through amino groups of amino HBP, and in a hot steaming condition, Ag+ can be converted to Ag0 through the reducibility of HBP. PAN-G-HBP and Ag nanoparticles (NPs)-coated fibers were then characterized through FTIR, UV–VIS DRS, FE-SEM, EDS, XPS and antibacterial measurement. FTIR results confirmed HBP was grafted on the surface of PAN fiber. FE-SEM showed that after grafting with HBP, the average diameter of PAN fibers was amplified. EDS, XPS, and UV–VIS DRS method indicated that under hot steaming condition and with the reducibility of HBP, Ag NPs uniform coating on the PAN-G-HBP. Ag NPs-coated fibers exhibits excellent antibacterial property against Escherichia coli and Staphylococcus aureus. Even under 20 times home washing conditions, the antibacterial reduction of Ag NPs-coated PAN fiber can achieved more than 98.94%.
Highlights
Polyacrylonitrile (PAN) fiber, obtained by free radical polymerization of monomer acrylonitrile, has excellent resistance to weather, sun, acid, and oxidant [1–3]
The fiber is rich in cyano groups, which are converted into various functional parts [25]
The PAN fiber was graft-modified with amino hyperbranched polymers (HBP) at a concentration of 0, 8, 16, and 24 g/L
Summary
Polyacrylonitrile (PAN) fiber, obtained by free radical polymerization of monomer acrylonitrile, has excellent resistance to weather, sun, acid, and oxidant [1–3]. PAN fiber is used to replace or mix wool fabric and is suitable for interior decoration cloth, such as curtains. PAN fiber products are fluffy, soft, with an ultra-fine diameter and a large specific surface area [4–6]. This product is limited in industrial use due to the lack of functional groups in the molecular structure of PAN [7]. The cyano-groups of PAN fiber can be transformed into various active groups, such as amination, amidoximation, and sulfonation, the groups can be Silver is a widely used material and has been proven to be effective against bacteria, fungi, and viruses. The fiber containing Ag NPs has been prepared for a variety of applications, including biotextiles, wound dressings, biological protection materials, sportswear, and so on. Studies attempted to improve the combination of Ag NPs and
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