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

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

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

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 language	English
Pages (from-to)	243-249
Number of pages	7
Journal	Solid State Ionics
Volume	42
Issue number	3-4
Publication status	Published - Oct 1990

Cite this

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

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. {\textcopyright} 1990.",

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T1 - Effect of side chain length and crosslinking on the ac conductivity of oligo (ethyleneoxide) comb-branch polymer-salt mixtures

AU - Cowie, J. M G

AU - Sadaghianizadeh, K.

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N2 - 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.

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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M3 - Article

VL - 42

SP - 243

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JO - Solid State Ionics

JF - Solid State Ionics

SN - 0167-2738

IS - 3-4

ER -

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

Abstract

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