Preparation and characterization of crosslinked proton conducting membranes based on chitosan and PSSA-MA copolymer

Jin Ah Seo, Joo Hwan Koh, Dong Kyu Roh, Jong Hak Kim

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

Proton conducting crosslinked complex membranes were prepared by blending of a cationic polyelectrolyte, i.e. chitosan (CS) and an anionic polyelectrolyte, i.e. poly(4-styrenesulfonic acid-co-maleic acid) (PSSA-MA). In particular, the dual function of PSSA-MA as a crosslinker and a proton conductor is described. The esterification reaction between -OH of CS and -COOH of PSSA-MA and the complex formation of NH3 + of CS and SO3 - of PSSA-MA were confirmed using FT-IR spectroscopy. The ion exchange capacity (IEC) of membranes continuously increased with PSSA-MA concentrations, resulting from the increase of ionic groups. However, the membranes exhibited the minimum values of proton conductivity and water uptake at 50-67 wt.% of PSSA-MA due to the effect of crosslinking and complex formation. In addition, a maximum of Young's modulus was achieved at 50 wt.% of PSSA-MA, as revealed by universal testing machine (UTM). Thermogravimetric analysis (TGA) showed that the thermal stability of membranes increased with increasing PSSA-MA concentrations and was the highest at 50 wt.% of PSSA-MA.

Original languageEnglish
Pages (from-to)998-1002
Number of pages5
JournalSolid State Ionics
Volume180
Issue number14-16
DOIs
Publication statusPublished - 2009 Jun 25

Fingerprint

Chitosan
Protons
copolymers
Copolymers
membranes
Membranes
conduction
preparation
acids
protons
Acids
poly(4-styrenesulfonic acid-co-maleic acid)
Proton conductivity
Esterification
Polyelectrolytes
Crosslinking
Thermogravimetric analysis
Infrared spectroscopy
Ion exchange
Thermodynamic stability

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Chemistry(all)

Cite this

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title = "Preparation and characterization of crosslinked proton conducting membranes based on chitosan and PSSA-MA copolymer",
abstract = "Proton conducting crosslinked complex membranes were prepared by blending of a cationic polyelectrolyte, i.e. chitosan (CS) and an anionic polyelectrolyte, i.e. poly(4-styrenesulfonic acid-co-maleic acid) (PSSA-MA). In particular, the dual function of PSSA-MA as a crosslinker and a proton conductor is described. The esterification reaction between -OH of CS and -COOH of PSSA-MA and the complex formation of NH3 + of CS and SO3 - of PSSA-MA were confirmed using FT-IR spectroscopy. The ion exchange capacity (IEC) of membranes continuously increased with PSSA-MA concentrations, resulting from the increase of ionic groups. However, the membranes exhibited the minimum values of proton conductivity and water uptake at 50-67 wt.{\%} of PSSA-MA due to the effect of crosslinking and complex formation. In addition, a maximum of Young's modulus was achieved at 50 wt.{\%} of PSSA-MA, as revealed by universal testing machine (UTM). Thermogravimetric analysis (TGA) showed that the thermal stability of membranes increased with increasing PSSA-MA concentrations and was the highest at 50 wt.{\%} of PSSA-MA.",
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Preparation and characterization of crosslinked proton conducting membranes based on chitosan and PSSA-MA copolymer. / Seo, Jin Ah; Koh, Joo Hwan; Roh, Dong Kyu; Kim, Jong Hak.

In: Solid State Ionics, Vol. 180, No. 14-16, 25.06.2009, p. 998-1002.

Research output: Contribution to journalArticle

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