纺织科技进展

采用载铜分子筛抗菌剂与聚酰胺(PA6)切片共混，再通过熔融纺丝制备载铜分子筛-PA6抗菌纤维；借助台式扫描电子显微镜、单纤维强力仪、差示扫描热量仪及热重分析仪等分析不同含量的载铜分子筛对PA6纤维表面形貌及力学性能的影响，并对比测试水洗10次前后载铜分子筛-PA6纤维的抗菌性能。结果发现，载铜分子筛均匀地分散在PA6纤维中，与PA6纤维结合良好并能发挥抗菌作用。随着载铜分子筛含量的增加，载铜分子筛-PA6纤维的热稳定性保持良好，断裂伸长率先增加后缓慢减小。当载铜分子筛含量为0.50%时，载铜分子筛-PA6纤维对金黄色葡萄球菌和大肠杆菌的抑菌率分别为98.20%和94.00%。水洗10次后，载铜分子筛-PA6纤维对这2种菌的抑菌率未发生明显下降。

Copper-loaded molecular sieve antimicrobial agent was blended with polyamide(PA6) slices, and copper-loaded molecular sieve-PA6 antimicrobial fibers were prepared by melt spinning. The effects of copper-loaded molecular sieve content on PA6 fiber surface morphology and mechanical properties were analyzed using a desktop scanning electron microscope, single-fiber tensile tester, differential scanning calorimeter, and thermogravimetric analyzer. Antimicrobial properties were compared between copper-loaded molecular sieve-PA6 fibers before and after 10 washing cycles. Results indicated uniform dispersion of copper-loaded molecular sieves within PA6 fibers, with effective interfacial bonding enabling antimicrobial functionality. Increasing molecular sieve content enhanced thermal stability while elongation at break initially increased then gradually decreased. At 0.50% Cu-loaded molecular sieve content, the fibers exhibited antibacterial rates of 98.20% against E. coli and 94.00% against S. aureus. After 10 washes, inhibition rates against both bacteria showed no significant decrease.