Gas transport through poly (trifluoropropylmethylsilicone) / polyetherimide composite membrane
Poly (trifluoropropylmethylsilicone) is well known for its oleophobicity, hydrophobicity and extending upper service temperature except for maintaining usual properties of conventional silicone polymers. Novel composite membranes have been fabricated with PTFPMS as a selective layer on microporous polyetherimide (PEI) support membranes. The gas permeation rate through the composite membrane decreased in the order of CO2 >H2 >O2 >N2. The permeation rates of O2, N2 and H2 were independent with pressure difference, while the permeation rate of CO2 had distinct decrease under 0.1MPa pressure difference then appeared slight increase as further increasing pressure difference to 0.4MPa. At 20 ℃ and 0.06 Mpa, the permeation rate of oxygen through the composite membrane was 22.4 GUP (1 GUP=1×10 -6 cm 3 (STP)/cm 2 ·s·cmHg), the ideal selectivity of O2/N2 and CO2/N2 was 3.2 and 18.3 respectively. Solvent resistance test conducted in isooctane and petroleum ether verified that the composite membrane could remain its stable gas separation performance.
Poly (trifluoropropylmethylsilicone) Composite membrane Gas permeation Solvent resistance
Fei Nie Gaohong He Wei Zhao Jiansheng Zhang
State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science and Technology, Dalian Univer State Key Laboratory of Fine Chemicals, R&D Center of Membrane Science and Technology, Dalian Univer
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）