Glass transition and ionic conduction in plasticized and doped ionomers

Shihai Zhang, Shichen Dou, Ralph H. Colby, James Patrick Runt

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

The relationship between ionic conduction and matrix glass transition was investigated in selected plasticized and doped poly((ethylene glycol) n-co-5-sulfoisophthalate lithium) ionomers. Plasticization with a poly(ethylene glycol) oligomer significantly increases the ionic conductivity, despite a decrease in lithium concentration. Doping with LiClO4 leads to much lower conductivity, despite the increase in Li+ content. These observations were reconciled by considering the corresponding change in ionomer glass transition temperature (Tg), and it was found that ionomers with different plasticizer/dopant levels exhibit similar conductivity at constant T - Tg. The fact that Tg plays such a strong role suggests that Li+ ion mobility is controlled by segmental motion of PEO.

Original languageEnglish (US)
Pages (from-to)2825-2830
Number of pages6
JournalJournal of Non-Crystalline Solids
Volume351
Issue number33-36 SPEC. ISS.
DOIs
StatePublished - Sep 15 2005

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Ionic conduction
Ionomers
Lithium
Polyethylene glycols
glycols
Glass transition
ethylene
lithium
Doping (additives)
Plasticizers
conduction
low conductivity
plasticizers
glass
Ionic conductivity
Theophylline
Polyethylene oxides
oligomers
Oligomers
glass transition temperature

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Cite this

Zhang, Shihai ; Dou, Shichen ; Colby, Ralph H. ; Runt, James Patrick. / Glass transition and ionic conduction in plasticized and doped ionomers. In: Journal of Non-Crystalline Solids. 2005 ; Vol. 351, No. 33-36 SPEC. ISS. pp. 2825-2830.
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Glass transition and ionic conduction in plasticized and doped ionomers. / Zhang, Shihai; Dou, Shichen; Colby, Ralph H.; Runt, James Patrick.

In: Journal of Non-Crystalline Solids, Vol. 351, No. 33-36 SPEC. ISS., 15.09.2005, p. 2825-2830.

Research output: Contribution to journalArticle

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AU - Runt, James Patrick

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