Comb-shaped polysulfones containing sulfonated polytriazole side chains for proton exchange membranes
- 김기현; Jung, BK (Jung, Bo-Kyung); Ko, T (Ko, Taeyun); Kim, TH (Kim, Tae-Ho); Lee, JC (Lee, Jong-Chan)
- Issue Date
- ELSEVIER SCIENCE BV
- JOURNAL OF MEMBRANE SCIENCE, v.554, pp.232 - 243
- Journal Title
- JOURNAL OF MEMBRANE SCIENCE
- Start Page
- End Page
- Comb-shaped polysulfone copolymers were synthesized by the click reaction, copper(I) catalyzed azide-alkyne 1,3-dipolar cycloaddition, using polysulfone having azidomethyl side group (PSf-N-3) and sulfonated polytriazole having one ethynyl chain-end group. PSf-N-3 was prepared by the substitution reaction of polysulfone through chloromethylation followed by azidation, and sulfonated polytriazoles having one ethynyl chain-end group was synthesized via the click reaction using 1,4-diethynylbenzene and 4,4'-diazido-2,2'-stilbenedisulfonic acid disodium salt tetrahydrate with CuI followed by end-capping process. Tough, flexible, and transparent membranes could be prepared by solution casting from the comb-shaped polysulfone copolymers and ion exchange capacity (IEC) of the resulting membranes could be controlled by changing the chain length of the sulfonated polytriazoles. The comb-shaped polysulfone membranes showed enhanced physicochemical stability and significantly higher proton conductivity when compared with a sulfonated poly(arylene ether sulfone) (SPAES) membrane having a similar IEC due to the distinct hydrophilic-hydrophobic phase separated morphology. The fuel cell performance of membrane electrode assembly with the comb-shaped polysulfone membrane is superior to those with the SPAES and Nafion-212 membranes at the various operating conditions.
- Files in This Item
- There are no files associated with this item.
- Appears in
- 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.