Preparation of novel microporous PES-TiO2 composite membranes prepared via phase inversion
PES- TiO2 composite membranes were prepared via phase inversion by dispersing TiO2 nanopaticles in PES casting solutions. XRD and DSC results showed that the interaction existed between TiO2 nanopaticles and PES. The TGA measurement indicated that the thermal stability of the composite membrane had been improved by the addition of TiO2 nanopaticles. The SEM images revealed that the composite membrane had a top surface with high porosity at low loading amount of TiO2 and a loose skin layer at high loading amount. At high loading amount of TiO2, the skinlayer became much looser for a significant aggregation, which could be observed in the composite membranes. Dynamic contact angles showed that the hydrophilicity of the composite membranes was improved by the addition of TiO2 nanopaticles. The permeation properties of the composite membranes were significantly superior to the pure PES membrane and the mean pore size also increased with the addition amount of TiO2 nanopaticles. When the TiO2 content was 4％, the flux reached the maximum at 3711L?m -2 ?h -1, about 29.3％ higher than that of the pure PES membrane. Mechanical test also showed that the mechanical strength of composite membranes enhanced as the addition of TiO2 nanopaticles.
Poly(ether sulfones) (PES) Microporous membrane Titanium dioxide Phase inversion
Jing-Feng Li Zhen-Liang Xu Hu Yang Li-Yun Yu Min Liu
State Key Laboratory of Chemical Engineering, Chemical Engineering Research Center, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
国际会议
The 5th International Conference on Separation Science and Technology(第五届国际分离科学与技术会议)
北京
英文
2007-10-14（万方平台首次上网日期，不代表论文的发表时间）