Proton exchange membrane block copolymer

Mokrini, A., Huneault, M. A. and Gerard, P. 2006. Partially fluorinated proton exchange membranes based on PVDF-SEBS blends compatibilized with methylmethacrylate block copolymers. Journal of Membrane Science 283 74—83. 

A major goal of the research in proton exchange membrane fuel cells is the development of high-temperature membranes that may operate at 120 °C and low humidity. One route are multi-block copolymers with completely disulfonated PAES and naphthalene polyimide oligomers [107]. 

The ion exchange capacity of the block copolymers for use as proton exchange membranes was varied by utUizing 4,4 -biphenol or hydroquinone in combina-hon with 3,3 -disulfonatedM,4 -dichlorodiphenyl sulfone to form hydrophihc segments. 

A. Sannigrahi, S. Takamuku, P. Jannasch, Block copolymers combining semi-fluorinated poly(arylene ether) and sulfonated poly(arylene ether sulfone) segments for proton exchange membranes, Int. J. Hydrogen Energy 39 (28) (2014) 15718-15727. 

The BPSH block copolymer membranes performed much better as proton exchange membranes for fuel cells than the random copolymers with similar lEC, especially in terms of proton conductivity at low humidity (on the order of mS/cm at 80 °C and 30 % RH, lEC =1.5 meq/g). 

Lee H-S, Lane O, McGrath JE (2010) Development of multiblock copolymers with novel hydroquinone-based hydrophilic blocks for proton exchange membrane (PEM) applications. J Power Sources 195 1772-1778... 

Lee M, Park JK, Lee H-S, Lane O, Moore RB, McGrath JE, Baird DG (2009) Effects of block length and solution-casting conditions on the final morphology and properties of disulfonated poly(arylene ether sulfone) multiblock copolymer films for proton exchange membranes. Polymer 50 6129-6138... 

Keywords Block copolymers Hydrocarbon membranes Proton exchange membranes Sidechain functionalized polymers Sulfonated poly(arylene ether)s ... 

Zhao, C.J., Lin, H.D., Li, X.F., Na, H., Morphological investigations of block sulfonated poly(arylene ether ketone) copolymers as potential proton exchange membranes, Polym. Adv. TechnoL, 2011, 22, 2173-2181. 

Fujimoto C. H., Hibbs M., Ambrosini A., Multi-block sulfonated poly(phenylene) copolymer proton exchange membranes, 2012, U.S. Patent 8110636 Bl. 

T. Erdogan, E.E. Unveren, T.Y. Inan, B. Birkan, Well-defined block copolymer ionomers and their blend membranes for proton exchange membrane fuel cell, J. Membr. Sci., 344 (2009) 172-181. 

Kim, T. A. Jo, W. H. (2010). Synthesis of Nonfluorinated Amphiphilic Rod-Coil Block Copolymer and Its Aprplication to Proton Exchange Membranes. Chem. Mat, 22, 3646-3652, ISSN 0897-4756. 

Yang, Y. S., Shi, Z. Q. and Holdcroft, S. 2004. Synthesis of sulfonated polysul-fone-block-PVDF copolymers Enhancement of proton conductivity in low ion exchange capacity membranes. Macromolecules 37 1678-1681. 

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