Proton exchange membrane graft copolymer

Phadnis, S., Patri, M., Chandrasekhar, L. and Deb, P. C. 2005. Proton-exchange membranes via the grafting of styrene and acrylic acid onto fluorinated ethylene propylene copolymer by a preirradiation technique. III. Thermal and mechanical properties of the membranes and their sulfonated derivatives. Journal of Applied Polymer Science 97 1418-1425. 

The (PSSNa) macromonomer was then copolymerized with styrene by emulsion polymerization to yield proton exchange membranes with sodium ions. The original structure of these graft copolymers (i.e., hydrophilic part owing to PSSNa) affords good ionic conductivity and may become a good model of NAFION membranes. 

Graft-crosslinked copolymers based on PEEK and sulfonated PEAS have been introduced for proton exchange membranes [134]. The graft-crosslinked polymers are prepared in two steps. First, a reactive polymer and oligomer precursors are independently prepared. Then the two precursors are subjected to a nucleophilic substitution... 

Si K., Dong D. X., Wycisk R., Litt M., Synthesis and characterization of poly(para-phenylene disulfonic acid), its copolymers and their -alkylbenzene grafts as proton exchange membranes High conductivity at low relative humidity, Journal of Materials Chemistry, 2012, 22, 20907-20917. 

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