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PVDF-g-PSSA

Examples of radiation-grafted PEMs poly(ethylene-flZf-tetrafluoroethylene)-gra/f-poly(sty-rene sulfonic acid) (ETFE-g-PSSA), 30 PVDF-g-PSSA, 31 and poly(tetrafluoroethylene-co-hexafluoropropylene)-g-PSSA (FEP-g-PSSA), 32. [Pg.157]

HAADF-STEM images (Ag+ stained) of (a) Nafion (b) PVDF-g-PSSA. (From Ffuang, H. S. et al. 2006. Applied Surface Science 253 2685-2689.)... [Pg.158]

T. Lehtinen, G. Sunholm and F. Sundholm, Effect of cross-linking on the physicochemical properties of proton conducting PVDF-g-PSSA membranes, J. Appl. Electrochem., 1999, 29, 677-683 P. Vie, M. Paronen, M. Stromgard, E. Rauhala and... [Pg.87]

Scheme 2 Chemical structures of a poly(perfluorosulfonic acid) b sulfonated polystyrene (SPS) c sulfonated polystyrene-fc-(ethylene-co-butylene)-fc-sulfonated polystyrene (SSEBS) d sulfonated polystyrene-fc-(isobutylene)-fc-sulfonated polystyrene (SSIBS) e poly(ethylene-co-tetrafluoroethylene)-g-polystyrene sulfonic acid (ETFE-g-PSSA) f poly(vinylidene fluoride)-g-polystyrene sulfonic acid (PVDF-g-PSSA) g poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether)-g-polystyrene sulfonic acid (FEP-g-PSSA) h sulfonated trifluorostyrene-trifluorostyrene copolymer (PTFSSA)... Scheme 2 Chemical structures of a poly(perfluorosulfonic acid) b sulfonated polystyrene (SPS) c sulfonated polystyrene-fc-(ethylene-co-butylene)-fc-sulfonated polystyrene (SSEBS) d sulfonated polystyrene-fc-(isobutylene)-fc-sulfonated polystyrene (SSIBS) e poly(ethylene-co-tetrafluoroethylene)-g-polystyrene sulfonic acid (ETFE-g-PSSA) f poly(vinylidene fluoride)-g-polystyrene sulfonic acid (PVDF-g-PSSA) g poly(tetrafluoroethylene-co-perfluoropropyl vinyl ether)-g-polystyrene sulfonic acid (FEP-g-PSSA) h sulfonated trifluorostyrene-trifluorostyrene copolymer (PTFSSA)...
Hietala S, Maunu SL, Sundholm F (2000) Sorption and diffusion of methanol and water in PVDF-g-PSSA and Nafion 117 polymer electrolyte membranes. J Polym Sd Pol Phys 38 3277-3284... [Pg.218]

FIGURE 12.9 Current-voltage characteristics and power density curves of a DMFC with PVDF-g-PSSA having various G%. [Pg.399]

The effects of side chain architectures on the properties and proton conductivities of graft copolymer membranes for DMFCs were studied by Su et al. [126]. Poly(vinylidene fluoride)-g-poly(styrene sulfonic acid) (PVDF-g-PSSA) copolymers with either linear graft (LG) or arborescent graft (AG) PSSA side chains were prepared. Scheme 6.29 shows the structures of LG and AG polymers. [Pg.303]

In their efforts to use various fluoropolymer films to develop PCMs, Scherer and co-workers [51] prepared PVDF-g-PSSA membranes in comparison with their counterparts based on ETFE films. PVDF films were activated from y-radiation (dose of 20 kGy at dose rate of 5.9 kGy h ) at room temperature in air and grafting of styrene with peroxidation method interestingly occurred at 60°C. The influence of the base polymer properties on the grafting behavior was addressed [52], Sulfonation of the grafted films conducted with chlorosulfonic acid/dichloromethane mixture at room temperature. The PEMFC performance of PVDF-based membranes was found to be inferior to their ETFE-based counterparts [52],... [Pg.93]

Scott et al. [56] tested radiation-grafted manbranes in DMFC. PVDF-g-PSSA membranes showed superior performance to Nafion under identical conditions at high current density in addition to lower methanol diffusion coefficient by an ordCT of magnitude. However, such membranes suffered performance deterioration after few hundreds of hours due to poor MEA interfacing. [Pg.93]

S. Hietala, S.L. Maunu, F. Sundholm, T. Lehtinen and G. Sundholm, Water sorption and diffusion coefficients of protons and water in PVDF-g-PSSA polymer electrolyte membranes, J. Polym Sci. B Polym. Phys. 37, 2893 (1999). [Pg.109]

V. Saarinen, O. Himanen, T. Kallio, G. Sundhohn, K. Kontturi, Current distribution measurements with a free-breathing direct methanol fuel cell using PVDF-g-PSSA and Nafion 117 membranes, J. Power Sources, 163 (2007) 768-776. [Pg.487]

G. Guo, R. lie, S. An, Performance of the self-breathing air direct methanol fuel cell with modified poly (vinylidene fluoride) grafted onto a blended polystyrene sulfonated acid (m-PVDF-g-PSSA) membranes, Adv. Mater. Res., 152-153 (2011) 149-153. [Pg.488]

See other pages where PVDF-g-PSSA is mentioned: [Pg.158]    [Pg.183]    [Pg.57]    [Pg.105]    [Pg.105]    [Pg.105]    [Pg.106]    [Pg.402]    [Pg.404]    [Pg.406]    [Pg.159]    [Pg.92]    [Pg.98]    [Pg.105]    [Pg.108]    [Pg.316]    [Pg.62]    [Pg.73]    [Pg.73]    [Pg.74]    [Pg.75]    [Pg.252]   
See also in sourсe #XX -- [ Pg.64 , Pg.66 , Pg.81 , Pg.94 ]



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