Zein/PA微纳米纤维膜的制备及其油水分离性能研究
Preparation of Zein/PA micro-nano fibrous membranes and their oil-water separation performance
陈鑫雨 1张宇 1崔桂新 2曾泳春1
作者信息
- 1. 东华大学纺织学院,上海
- 2. 中国纺织科学研究院江南分院,浙江,绍兴
- 折叠
摘要
油水分离是工业废水处理中重要的环节.利用天然蛋白质材料玉米醇溶蛋白(Zein)的特殊润湿性制备一种具有优异分离效率与通量的油水分离纳米纤维膜.为提升Zein的力学性能,将其与具备优良机械性能的ES-11醇溶尼龙(PA)共混进行静电纺丝.PA具有优良的机械性能,制备得到的Zein/PA纤维膜,既大幅提升了纤维膜的力学性能,又保持了 Zein的特殊润湿性,可实现按需油水分离.结果表明:当加入PA比例达35％时,纤维膜的拉伸应力和应变分别达到3.31 MPa、64.79％;对不同油水混合物的分离效率均在98.5％以上,最高达99.6％,分离通量最高达14 107 L/(m2·h);在10次分离循环后,分离效率和分离通量仍然高达98.7％和13 287 L/(m2·h);在酸、碱和盐环境下油水分离的效率与通量未发生明显下降,纤维膜具有良好的耐酸、碱和盐性.
Abstract
Oil-water separation is important in waste-water treatment.Taking the advantage of the special wettability of Zein,an oil-water separation nanofibrous membrane with excellent separation efficiency and flux was prepared.To enhance the mechanical properties of Zein,Zein was electrospun with ES-11 alkyd soluble nylon(PA),which has excellent mechanical properties.The prepared Zein/PA fibrous membrane can realize on-demand oil-water separation,and substantially enhance the mechanical properties.The results show that the tensile stress and strain of the fibrous membrane reach 3.31 MPa and 64.79％when the proportion of PA reaches 35％.The separation efficiencies of different oil-water mixtures are above 98.5％,up to 99.6％,and the separation fluxes are up to 14 107 L/(m2·h).After 10 separation cycles,the separation efficiency and flux of the fibrous membrane keep as high as 98.7％and 13 287 L/(m2·h).The efficiency and flux of oil-water separation under acid,alkali and salt environments do not decrease significantly,indicating that the fibrous membrane has good resistance to acid,alkali and salt.
关键词
静电纺丝/玉米醇溶蛋白/油水分离/特殊润湿性Key words
electrospinning/Zein/oil-water separation/special wettability引用本文复制引用
基金项目
国家自然科学基金(12172087)
浙江省公益技术应用研究项目(LGG21E030001)
出版年
2024
NETL
NSTL
万方数据