首页
最新动态 交流合作 科研项目 论文著作 精彩瞬间 招生招聘
  • Preparation of thin-film composite membrane with Turing structure by PEO-assisted interfacial polymerization combined with choline chloride modification to improve permeability
  • 来源:陈英波教授个人网站 2023-04-12
  • BackgroundThe speed of the interfacial polymerization reaction is considered to be the decisive factor for the thickness and surface morphology of the polyamide layer. The reaction rate can be controlled by controlling the diffusion rate of the aqueous monomer.MethodsHere, firstly, polyethylene oxide was added into the aqueous solution to increase the viscosity of the aqueous phase to reduce the reaction rate. Then choline chloride (CC) was grafted on the surface of the nascent polyamide membrane by a surface grafting method for secondary modification. A polyamide nanofiltration membrane with a special Turing structure was prepared on the surface of polyethersulfone support membrane. The desalination performance of composite membrane was investigated.Significant findingsThe results showed that the addition of PEO resulted in the regular Turing structure on the surface of the composite membrane. When the addition amount reached 1%, the performance of the composite membrane was the best. After the secondary modification of CC, the rejection rate of Na2SO4 was more than 96%, and the permeation flux could reach 125.9 L/(m2·h·MPa). It is expected to be applied in the fields of seawater desalination and sewage purification.

  • [来源:中国聚合物网]
  • 了解更多请进入: 陈英波教授个人网站
相关新闻
  • · 热辅助界面聚合制备耐高温聚酰胺复合纳滤膜
  • · 具有高导热性和低介电常数的烷基化改性氮化硼纳米片/聚酰亚胺复合膜
  • · 单宁酸和聚乙烯亚胺改性具有空气稳定性的零价铁复合粒子对Cr(VI)的选择性去除
  • · 层层自组装和界面聚合再生废弃RO膜为NF膜

关于我们  |  联系我们  

网站:中国聚合物网

polymer.cn Copyright ©2017