Synthesis and characterization of poly(ether sulfone) grafted poly(styrene sulfonic acid) for proton conducting membranes |
| |
Authors: | Yoon Taik Goh Rajkumar Patel Se Jun Im Jong Hak Kim Byoung Ryul Min |
| |
Affiliation: | (1) Department of Chemical Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea |
| |
Abstract: | Two-step synthesis of proton-conducting poly(ether sulfone) (PES) graft copolymer electrolyte membrane is proposed. Fridel
Craft alkylation reaction was used to introduce chloromethyl pendant group onto the PES polymer backbone. Later on, atom transfer
radical polymerization (ATRP) was applied to synthesize a series of poly(ether sulfone) grafted poly(styrene sulfonic acid)
(PES-g-PSSA). Successful chloromethyl substitution and grafting of the pendant group was characterized by the 1H-NMR and elemental analysis. Electrochemical properties such as ion exchange capacity (IEC), water uptake and proton conductivity
increased with increasing PSSA contents. Thermal gravimetric analysis (TGA) showed the thermal stability of membranes up to
270 °C. Proton conductivity for maximum amount of grafting was 0.00297 S/cm. |
| |
Keywords: | Polymer Electrolyte Membrane Proton Conductivity Atom Transfer Radical Polymerization Fuel Cell |
本文献已被 SpringerLink 等数据库收录! |