等离子体预处理制备抗菌-特殊润湿性除油型棉织物

Preparation of antibacterial and superwetting cotton textiles by plasma pretreatment for oil removal application

为实现特殊润湿性材料的规模化生产,构筑长效、耐久、稳定的特殊浸润性油水分离产品,以棉织物网膜为基材,对其进行了等离子体预处理与超疏水性界面构建的研究。即将聚氨酯胶黏剂(PU)与合成的Ag@SiO2球形颗粒分别配制成涂剂A与涂剂B,采用简单的交替高压喷涂技术与疏水改性处理,在棉织物表面构建了强健的微纳二级粗糙结构,继而获得超疏水性生物质网膜材料。系统地研究了等离子体预处理基材距离、电压、喷涂次数等对基材表面粗糙度的作用规律,并对合成产品在抗菌防护与油水分离领域进行了应用探索。结果,该产品是一种优异的特殊润湿性除油型生物质基网膜材料,能够有效地实现油水分离应用,并防止病菌附着。

For the scale manufacturation of superwetting materials,cotton textiles were pretreated with plasma and interface construction for building durable products with special wetting behavior,which could be utilized in oil-water separation.Specifically,polyurethane adhesive(PU)and as-prepared Ag@SiO2 nanospheres were prepared into spraying reagents A and B,respectively.Afterwards,simple high-pressure spraying and hydrophobic modification technologies were adopted to form the robust micro/nano roughness on cotton fiber surface,and then superhydrophobic membrane was obtained.Moreover,the influence of the plasma distance,voltage,and spraying times on the surface roughness of cotton substrate was systematically studied.Meanwhile,the applications of the products in antimicrobial protection and oil/water separation were explored as well.Results show that the as-prepared product was a type of biomass based membrane with excellent water-oil separating abilities,which could effectively separate oil-water mixtures and prevent pathogen attachment.