Polyimide-silica hybrid membranes

Physical and Gas Transport Properties of Hyperbranched Polyimide-Silica Hybrid Membranes... [Pg.143]

Figure 8.1 ideal CO2/CH4 selectivity (a(C02/CH4)) of 6FDA-based polyimide-silica hybrid membranes plotted against CO2 permeability coefficient attached number represents silica content (wt%) in the membrane... [Pg.144]

Scheme 8.1 Preparation of hyperbranched polyimide-silica hybrid membrane...

Suzuki T, Yamada Y (2006) Characterization of 6FDA-based hyperbranched and linear polyimide-silica hybrid membranes by gas permeation and 129Xe NMR measurements. [Pg.183]

Suzuki T, Yamada Y (2005) Physical and gas transport properties of novel hyperbranched polyimide - silica hybrid membranes. Polym Bull 53(2) 139-146... [Pg.184]

Suzuki T, Yamada Y (2007) Effect of End Group Modification on Gas Transport Properties of 6FDA-TAPOB Hyperbranched Polyimide-Silica Hybrid Membranes High performance polymers 19 553-564. [Pg.61]

Zhong S.-H., Li C.-F., Xiao X.-F. Preparation and characterization of polyimide-silica hybrid membranes on kieselguhr-mullite supports. J. Membr. Sci. 2002 199 53-58... [Pg.1366]

Figure 24.14 FaUing-off ratio of O2/N2 selectivity at an elevated temperature in polyimide-silica hybrid membranes (Park et al., 2003).

Suzuki T, Yamada Y, Itahashi K (2008) 6EDA-TAPOB hyperbranched polyimide-silica hybrids for gas separation membranes. J Appl Polym Sci 109 813-819... [Pg.122]

Geng L, He Y, Liu D, Dai X, Lii C (2012) Facile in situ template synthesis of sulfonated polyimide/mesoporous silica hybrid proton exchange membrane for direct methanol fuel cells. Micropor Mesopor Mat 148 8-14... [Pg.228]

The sol-gel process performed in low concentrated polymer-solvent solutions is another attractive route to develop hybrid membranes because it allows an in situ dispersion of metal-based nanoparticles within the polymeric matrix, achieving a suitable interfacial morphology between the continuous and the dispersed phase. Silica particles and polyimide have been frequently used to produce these hybrid membranes [107,108]. In general, hydrolysis and condensation reactions are involved in the sol-gel process, when alkoxides are involved in the formation of the dispersed phase. The advantage of using this method is the formation of an inorganic network largely interconnected with the polymeric materials mainly with noncovalent interactions [109]. In Fig. 7.10 a... [Pg.180]

Watanabe and coworkers [5, 454, 455] studied the DMFC performance of sPI and crosslinked sPI membranes obtained by polycondensation of NTDA, bis (3-sulfo propoxy)benzidine (BSPB), and alkaline diamine [5]. Other studies on polyimide membranes focused on methanol selectivity [456], DMFC performance [457], and the effect of crosslinking on the methanol selectivity [458]. Hybrid sPI membranes were prepared, including composites with PAMPS [459], PTA [460], Nafion infiltrated sPI membranes [461], sPI membranes coated with crosslinkable poly(ethylene glycol) dimethylacrilate (PEGDMA) [462], and mesoporous silica [463, 464],... [Pg.187]

C. J. Cornelius, E. Maraud, Hybrid silica-polyimide composite membranes gas transport properties, J. Membr. ScL, 202, 97-118 (2002). [Pg.157]

Cornelius CJ, Maraud E (2002) Hybrid silica-polyimide composite membranes gas transport... [Pg.122]

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