Effect of side chain length and crosslinking on the ac conductivity of oligo (ethyleneoxide) comb-branch polymer-salt mixtures

J. M G Cowie, K. Sadaghianizadeh

Research output: Contribution to journalArticle

Abstract

Linear and crosslinked comb-branch polymers have been prepared from the macromonomers CH2 = CH-O-(CH2CH2O)nCH3 where n=3, 5, and 6 7. Comparable ionic conductivity levels could be achieved in both linear and branched system when mixed with several salts, if the crosslink density was kept ~5%. The conductivity-temperature behaviour for the crosslinked systems mixed with LiClO4, LiSO3CF3, LiBF4 and NaClO4 was examined as a function of the length of the oligo (ethylene oxide) side chain. It was found that the maximum conductivities of s=10-4-1.58×10-3 for T=303-373 K were achieved when n=5 for a 5% crosslinked sample mixed with LiClO4 at the composition [Li+] [EO]=0.05. © 1990.

Original languageEnglish
Pages (from-to)243-249
Number of pages7
JournalSolid State Ionics
Volume42
Issue number3-4
Publication statusPublished - Oct 1990

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Chain length
Crosslinking
Polymers
Salts
Ethylene Oxide
Ionic conductivity
Chemical analysis
Temperature
lithium perchlorate

Cite this

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abstract = "Linear and crosslinked comb-branch polymers have been prepared from the macromonomers CH2 = CH-O-(CH2CH2O)nCH3 where n=3, 5, and 6 7. Comparable ionic conductivity levels could be achieved in both linear and branched system when mixed with several salts, if the crosslink density was kept ~5{\%}. The conductivity-temperature behaviour for the crosslinked systems mixed with LiClO4, LiSO3CF3, LiBF4 and NaClO4 was examined as a function of the length of the oligo (ethylene oxide) side chain. It was found that the maximum conductivities of s=10-4-1.58×10-3 for T=303-373 K were achieved when n=5 for a 5{\%} crosslinked sample mixed with LiClO4 at the composition [Li+] [EO]=0.05. {\circledC} 1990.",
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Effect of side chain length and crosslinking on the ac conductivity of oligo (ethyleneoxide) comb-branch polymer-salt mixtures. / Cowie, J. M G; Sadaghianizadeh, K.

In: Solid State Ionics, Vol. 42, No. 3-4, 10.1990, p. 243-249.

Research output: Contribution to journalArticle

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AB - Linear and crosslinked comb-branch polymers have been prepared from the macromonomers CH2 = CH-O-(CH2CH2O)nCH3 where n=3, 5, and 6 7. Comparable ionic conductivity levels could be achieved in both linear and branched system when mixed with several salts, if the crosslink density was kept ~5%. The conductivity-temperature behaviour for the crosslinked systems mixed with LiClO4, LiSO3CF3, LiBF4 and NaClO4 was examined as a function of the length of the oligo (ethylene oxide) side chain. It was found that the maximum conductivities of s=10-4-1.58×10-3 for T=303-373 K were achieved when n=5 for a 5% crosslinked sample mixed with LiClO4 at the composition [Li+] [EO]=0.05. © 1990.

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