Hydrophilicity, pore structure and mechanical performance of CNT/PVDF materials affected by carboxyl contents in multi-walled carbon nanotubes

2017 2nd International Conference on Innovative Engineering Materials

Zhang, Yanxia^1 ; Jiang, Ce^1 ; Tian, Run^1 ; Li, Guangfen^1

State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, Tianjin

300387, China^1

关键词: Carboxyl contents;    Functionalized MWCNTs;    Mechanical performance;    Membrane hydrophilicity;    Membrane morphology;    Phase-inversion method;    Poly (vinylidene fluoride)(PVDF);    Thermal behaviors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/284/1/012009/pdf
DOI  :  10.1088/1757-899X/284/1/012009

来源: IOP

【 摘 要 】

Poly (vinylidene fluoride) (PVDF) membranes have been prepared by loading different type of MWCNTs-COOH as the dispersed phase via phase inversion method. The chemically functionalized MWCNTs with increasing carboxyl content were chosen for achieving a better dispersion in PVDF and altering the membrane hydrophilicity. The effect of the carboxyl content in MWCNTs on crystal structure, thermal behavior, membrane morphology, hydrophilicity, and water flux of blended membranes were investigated. Due to the addition of carbon nanotubes, various performances of the hybrid membrane had obvious changes. The most prominent was that thermal stability could be enhanced and the pore morphology was more preferable, also that the hydrophilicity were improved, further that water flux could be increased to some extent.