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利用等离子体引发二甲基二烯丙基氯化铵(DMDAAC)接枝丙纶非织造布,以改善其表面性能,同时赋予材料抗菌功能。采用预浸泡单体再经等离子体照射的方法进行接枝。以材料对酸性红染料的结合量为接枝率的评价指标,通过正交试验得出等离子体处理最佳条件:放电功率为250 W,时间为25 min,压强为30 Pa;接枝后非织造布对染料的结合量为151.4μg/cm2。用XPS、TG、液态水分管理系统分别对接枝后材料的表面元素组成、热稳定性和亲水性进行表征,并用抑菌晕法和定时暴露法表征材料的抗菌性。结果表明,材料表面含有N元素,接枝后非织造布的亲水性、热稳定性提高,并具有一定的抗菌效果。
Plasma induced dimethyldiallylammonium chloride (DMDAAC) grafted polypropylene nonwovens to improve their surface properties while imparting antibacterial properties to the material. Using pre-soaked monomer and then irradiated by the plasma grafting method. The optimum conditions of plasma treatment were obtained by orthogonal experiment. The discharge power was 250 W, the time was 25 min, the pressure was 30 Pa. After grafting The binding amount of the woven cloth to the dye was 151.4 μg / cm2. The surface elemental composition, thermal stability and hydrophilicity of the grafted materials were characterized by XPS, TG and liquid water management system. The antibacterial properties of the materials were characterized by inhibition of bacteria and exposure to time. The results show that the surface of the material contains N element, and the hydrophilicity and thermal stability of the non-woven fabric after grafting are improved, and the antibacterial effect is certain.