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
  • Thermo-responsive Modification and Properties Study of PVDF Flat Membrane
  • 来源:赵义平教授个人网站 2014-03-10
  • A thermo-responsive membrane, PVDF-g-PNIPAAm, was successfully prepared from poly(vinylidene fluoride) (PVDF) membrane through surface-initiated atom transfer radical polymerization (ATRP) of a thermo-responsive monomer, N-isopropyl acrylamide (NIPAAm). The effect of the mass ratio of PVDF membrane to NIPAAm monomer on ATRP was studied in detail. The grafting copolymer was characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS). The results showed that the NIPAAm was successfully grafted on the PVDF membrane, the membrane pores became smaller and the mass ratio 1:8 of PVDF membrane to NIPAAm was in favor of surface-initiated ATRP. The thermal stability of PVDF membrane and PVDF-g-PNIPAAm membranes was characterized by differential scanning calorimetry (DSC). Contact angles of membrane surface, water penetration and protein solution permeation were tested. Water contact angles of PVDF membrane reduced after the surface grafting of NIPAAm, which illuminated that the hydrophilicity of the grafted membrane was improved. The PVDF-g-PNIPAAm membranes exhibited good thermo-responsive permeability and antifouling property.
  • [来源:中国聚合物网]
  • 了解更多请进入: 赵义平教授个人网站
相关新闻
  • · Study on the influence of reaction time on the structure and properties of the PVDF membrane modified through the method of atom transfer radical polymerization
  • · Preparation, characterization and application of chiral thermo-sensitive membrane for phenylalanine separation of the racemic mixture
  • · Structure and Performance of Temperature-Sensitive Poly(vinylidene fluoride) Hollow Fiber Membrane Fabricated at Different Take-up Speeds
  • · Dry–wet spinning of temperature-sensitive PVDF hollow-fiber membranes at different bore fluid flow rates

关于我们  |  联系我们  

网站:中国聚合物网

polymer.cn Copyright ©2017