Abstract
In this work, by simply using barium hydroxide (Ba(OH)2·8H2O) to react with cupric(II) sulfate pentahydrate (CuSO4.5H2O) in methanol under room temperatures, cupric oxide and barium sulfate co-precipitates (CuO@BaSO4) were one-step prepared, and the methanol can be recycled after separating the co-precipitates. The CuO@BaSO4 co-precipitates were then blended with polyamide 6 (PA6) to prepare PA6-CuO@BaSO4 composites and composites fiber via melt extrusion and melt spinning methods to improve the mechanic and antibacterial properties synchronously. The as-prepared CuO@BaSO4 co-precipitates have a regular size of 30–50 nm and are highly compatible with the PA6 matrix. Further investigations disclosed that the CuO@BaSO4 co-precipitates had a good dispersion in the PA6 matrix and synchronously improved the mechanical properties and thermal stability. What’s more, the PA6-CuO@BaSO4 composites showed excellent antibacterial performance and high spinnability. The bactericidal rate reached 100% when adding tiny content (0.24 wt%) of Cu2+ into PA6 fibers.
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