There has been an increasing focus on antibacterial textiles owing to their widespread applications in global public health. In this study, we prepared antibacterial bio-based poly (trimethylene terephthalate) (PTT) by multi-crosslinking with citric acid among PTT and β-cyclodextrin (β-CD), and then adsorbing zinc and copper ions. The results show that β-cyclodextrin was successfully grafted onto the surface of PTT. The adsorption amounts of Zn2+ and Cu2+ on β-CD/PTT were investigated by ICP and FE-SEM, which showed that Zn2+ and Cu2+ penetrated the fabric surface. Moreover, under optimal adsorption conditions, the adsorption capacity of Zn2+ and Cu2+ are about 34 mg/g and 50 mg/g, respectively. During antibacterial test, the bactericidal rates of β-CD/Cu2+/PTT reached 90.75% for E. coli and 85.36% for S. aureus, and the bactericidal rates of β-CD/Zn2+/PTT are 80.48% for E. coli and 73.10% for S. aureus. Functionalized PTT fabrics with eco-environmental and sustainable performance may have promising application in the field of antibacterial fabrics.
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