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%.

在这项研究中，通过在高压釜中进行酰胺化反应，制备了氨基超支化聚合物（HBP）接枝的聚丙烯腈（PAN）纤维。制备的PAN-G-HBP纤维可以通过氨基HBP的氨基络合Ag ⁺，在热蒸条件下可以形成Ag ⁺可以通过HBP的还原性转化为Ag0。然后通过FTIR，UV-VIS DRS，FE-SEM，EDS，XPS和抗菌测量对PAN-G-HBP和Ag纳米颗粒（NPs）包覆的纤维进行表征。FTIR结果证实HBP被接枝在PAN纤维的表面上。FE-SEM表明，接枝HBP后，PAN纤维的平均直径被放大。EDS，XPS和UV-VIS DRS方法表明，在热蒸条件下，随着HBP的还原，Ag NPs在PAN-G-HBP上均匀涂覆。Ag NPs包覆的纤维对大肠杆菌和金黄色葡萄球菌具有优异的抗菌性能。即使在20倍的家庭洗涤条件下，Ag NPs包覆的PAN纤维的抗菌还原率也可以达到98.94％以上。