Dimethyl silane-modified silica in polydimethylsiloxane as gas permeation mixed matrix membrane
作者： Grace M. Nisola , Arnel B. Beltran , Dong Min Sim , Dongjoo Lee , Bumsuk Jung
DOI: 10.1007/S10965-011-9655-X
关键词:
摘要: The gas transport behaviors of O2, N2, CO2 and CH4 were investigated in mixed matrix membranes (MMMs) prepared from polydimethylsiloxane (PDMS) filled with surface functionalized silica (SiO2) nanoparticles. SiO2 modification was performed through silanization using chlorodimethyl silane. FTIR confirmed the presence dimethyl silane on (Si-DMS) whereas elemental analysis showed 94.2% successful modification. Thermal gravimetric revealed improved thermal stabilities PDMS MMMs. Field emission scanning electron microscopy uniform distribution Si-DMS within membrane. effect permeabilities (P) contrast to Maxwell model prediction. Enhanced P values all gases MMMs (as compared pure PDMS) associated improvement diffusion coefficients (Dm) despite reduction solubility coefficients. increase Dm attributed higher free volumes However, slight declines (<8% selectivities observed. Overall, have performances due enhanced permeabilities.
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sci-hub.se 参考文章(38)
C. Becker, B. Kutsch, H. Krug, H. Kaddami, SAXS and TEM Investigations on Thermoplastic Nanocomposites Containing Functionalized Silica Nanoparticles Journal of Sol-Gel Science and Technology. ,vol. 13, pp. 499- 502 ,(1998) , 10.1023/A:1008602118194
John Crank, Geoffrey Sheard Park, Diffusion in polymers Academic Press. ,(1968)
J. F. Rabek, Experimental methods in polymer chemistry: Physical principles and application ,(1980)
D Airey, S Yao, J Wu, V Chen, A.G Fane, J.M Pope, An investigation of concentration polarization phenomena in membrane filtration of colloidal silica suspensions by NMR micro-imaging Journal of Membrane Science. ,vol. 145, pp. 145- 158 ,(1998) , 10.1016/S0376-7388(98)00051-9
TC Merkel, BD Freeman, RJ Spontak, Z He, Ingo Pinnau, P Meakin, AJ Hill, Ultrapermeable, Reverse-Selective Nanocomposite Membranes Science. ,vol. 296, pp. 519- 522 ,(2002) , 10.1126/SCIENCE.1069580
Juhyeon Ahn, Wook-Jin Chung, Ingo Pinnau, Michael D. Guiver, Polysulfone/silica nanoparticle mixed-matrix membranes for gas separation Journal of Membrane Science. ,vol. 314, pp. 123- 133 ,(2008) , 10.1016/J.MEMSCI.2008.01.031
C. P. Tripp, M. L. Hair, Chemical attachment of chlorosilanes to silica: a two-step amine-promoted reaction The Journal of Physical Chemistry. ,vol. 97, pp. 5693- 5698 ,(1993) , 10.1021/J100123A038
Wilfredo Yave, Anja Car, Klaus-Viktor Peinemann, Muhammed Q. Shaikh, Klaus Rätzke, Franz Faupel, Gas permeability and free volume in poly(amide-b-ethylene oxide)/ polyethylene glycol blend membranes Journal of Membrane Science. ,vol. 339, pp. 177- 183 ,(2009) , 10.1016/J.MEMSCI.2009.04.049
M Smaihi, T Jermoumi, J Marignan, RD Noble, Organic-inorganic gas separation membranes: preparation and characterization Journal of Membrane Science. ,vol. 116, pp. 211- 220 ,(1996) , 10.1016/0376-7388(96)00042-7
Zhenjie He, Ingo Pinnau, Atsushi Morisato, Nanostructured poly(4-methyl-2-pentyne)/silica hybrid membranes for gas separation☆ Desalination. ,vol. 146, pp. 11- 15 ,(2002) , 10.1016/S0011-9164(02)00463-0