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Proton‐conduction in poly(alkylenecarbonate)/poly(thiophenylenesulfonic acid) composites
Author(s) -
Cho JunSang,
Hayashino Yuki,
Miyatake Kenji,
Takeoka Shinji,
Tsuchida Eishun
Publication year - 2000
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/1099-1581(200008/12)11:8/12<548::aid-pat4>3.0.co;2-8
Subject(s) - materials science , conductivity , composite material , proton , composite number , nafion , thermal conduction , dissociation (chemistry) , thermal stability , alkyl , polymer chemistry , chemical engineering , chemistry , organic chemistry , electrochemistry , physics , electrode , quantum mechanics , engineering
Highly sulfonated poly(thiophenylenesulfonic acid) (PTPSA) was prepared from a soluble polysulfonium salt precursor and mixed with poly(alkylenecarbonate) (PAC, alkylene = ethylene, PEC; propylene, PPC; butylene, PBC). The PTPSA and PAC were employed as a proton source for conduction and a flexible base matrix for proton dissociation and conduction pathway, respectively. For the composites of PTPSA/PAC (3/1, 2/1, 1/1 and 1/2, by weight), the effect of alkyl chain lengths of PAC, temperature dependence of proton‐conductivity, and water content on the composites was studied. The proton‐conductivity of the PTPSA/PAC composites increased with the increasing PTPSA portion. The PTPSA/PBC (3/1) composite shows the highest proton‐conductivity of 1.5 × 10 −6 Scm −1 at 30 °C. However, the increased incorporation of PTPSA does not contribute to producing the higher proton conduction of the composites. Moreover, the PTPSA/PBC (3/1) composite including 15 wt% of water retained the proton‐conductivity of 7.1 × 10 −2 Scm −1 at 140 °C, which could be the conductivity comparative to the Nafion membrane and thermal stability. Copyright © 2000 John Wiley & Sons, Ltd.