Electrokinetic behavior on the surface of Polypropylene hollow fiber membrane modified by using Low-temperature plasma method
There were used two type monomers: acrylic acid (AA) and acryl amide (AM) to modified by low-temperature plasma treatment and graft copolymerization. FTIR (Fourier-Transform IR Spectroscopy) characterizations show that AA and AM have been successfully grafted onto the surface of PP membranes, respectively. Streaming potential measurements have been used to investigate the surface characteristics of modified membrane and original membrane by the equipment for streaming potential measurement which was made in our laboratory. The zeta potentials and charge density of the membranes were calculated from the streaming potential by using Helmholtz-Smoluchowski equation and Gouy-Chapmann equation, respectively. The results show that the zeta potential of original membrane, 100%AA and10%AM grafted membranes are -12.73mV, -16.39mV, -20.44mV , The charge densities are 9.17×10 -6 C·m -2 , 11.8×10 -6 C·m -2 , 14.7×10 -6 C·m -2 , respectively. The change can improve the hydrophilic characteristics of membranes surface, especially on separating negative charge colloid, oil emulsion and so on.
Low-temperature plasma modify and graft streaming potential zeta potential Hollow fiber polypropylene membranes
YANG Qing CHANG Qing CHEN Li FAN Duojin
School of Environmental and Municipal Engineering, Lanzhou Jiaotong University,Lanzhou, 730070 Key Laboratory Opto-Electronic Technology and Intelligent ControlLanzhou Jiaotong University,Ministr
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）