PET非织造布等离子改性及抗菌性能研究

Plasma modification and antibacterial property of PET non-woven fabric

采用低温氧等离子体处理聚对苯二甲酸乙二酯(PET)非织造布接枝丙烯酸(AA)后,再接枝壳聚糖,探讨了氧等离子体参数对接枝AA后PET亲水性的影响,以及接枝壳聚糖后其PET非织造布抗菌性能的变化。结果表明:低温氧等离子体处理PET非织造布后,其纤维表面粗糙度增加,接枝AA后PET亲水性提高。低温氧等离子体处理PET非织造布接枝AA改性的最佳条件为:工作压强30 Pa,放电功率40 W,处理时间2 min。接枝壳聚糖后,PET非织造布具有抑菌性能,对大肠杆菌和金黄色葡萄球菌有明显的抑菌效果。

Polyethylene terephthalate （PET） non-woven fabric was grafted with acrylic acid （AA） and subsequently with chitosan by low-temperature oxygen plasma. The effects of oxygen plasma parameter on the hydrophilicity of AA-grafted PET were discussed. The change in the antibacterial behavior of PET non-woven fabric after grafting with chitosan was also discussed. The results showed that the PET non-woven fabric had the surface roughness greatly increased after low-temperature oxygen plasma treatment, and the hydrophilicity of PET was improved after grafting with AA. The low-temperature oxygen plasma grafting modification conditions for PET non-woven fabric were optimized as followed ： working pressure 30 Pa, discharge power 40 W, treating time 2 min. The PET non-woven fabric had the profound antibacterial effect against escherichia coli and staphylococcus aureus after grafting with chitosan.