Ion transport within random-sulfonated and block-sulfonated copolyimides

Michael R. Hibbs, Christopher J Cornelius

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A series of sulfonated copolyimides was prepared from 4,4-oxydianiline, sulfonated 4,4′-oxydianiline, and 4,4′-(4,4′- isopropylidenediphenoxy) bis(phthalic anhydride). Both random- and block structures were prepared by varying the timing of monomer addition to the polymerization reaction. The polymers were converted to their acid forms and then cast into films. 1H NMR, FTIR, and non-aqueous titration verified the degree of polymer sulfonation. The block copolymers showed higher water uptake and proton conductivities than random copolymers with similar ion exchange capacity (IEC) values. These differences became pronounced as the IEC value was increased.

Original languageEnglish (US)
Pages (from-to)1303-1309
Number of pages7
JournalJournal of Materials Science
Volume48
Issue number3
DOIs
StatePublished - Feb 1 2013
Externally publishedYes

Fingerprint

Ion exchange
Polymers
Ions
Sulfonation
Proton conductivity
Titration
Block copolymers
Copolymers
Monomers
Polymerization
Nuclear magnetic resonance
Acids
Water
phthalic anhydride

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Ion transport within random-sulfonated and block-sulfonated copolyimides. / Hibbs, Michael R.; Cornelius, Christopher J.

In: Journal of Materials Science, Vol. 48, No. 3, 01.02.2013, p. 1303-1309.

Research output: Contribution to journalArticle

@article{04aaed1d7f0b4355a19b30be1d728ed6,
title = "Ion transport within random-sulfonated and block-sulfonated copolyimides",
abstract = "A series of sulfonated copolyimides was prepared from 4,4-oxydianiline, sulfonated 4,4′-oxydianiline, and 4,4′-(4,4′- isopropylidenediphenoxy) bis(phthalic anhydride). Both random- and block structures were prepared by varying the timing of monomer addition to the polymerization reaction. The polymers were converted to their acid forms and then cast into films. 1H NMR, FTIR, and non-aqueous titration verified the degree of polymer sulfonation. The block copolymers showed higher water uptake and proton conductivities than random copolymers with similar ion exchange capacity (IEC) values. These differences became pronounced as the IEC value was increased.",
author = "Hibbs, {Michael R.} and Cornelius, {Christopher J}",
year = "2013",
month = "2",
day = "1",
doi = "10.1007/s10853-012-6873-5",
language = "English (US)",
volume = "48",
pages = "1303--1309",
journal = "Journal of Materials Science",
issn = "0022-2461",
publisher = "Springer Netherlands",
number = "3",

}

TY - JOUR

T1 - Ion transport within random-sulfonated and block-sulfonated copolyimides

AU - Hibbs, Michael R.

AU - Cornelius, Christopher J

PY - 2013/2/1

Y1 - 2013/2/1

N2 - A series of sulfonated copolyimides was prepared from 4,4-oxydianiline, sulfonated 4,4′-oxydianiline, and 4,4′-(4,4′- isopropylidenediphenoxy) bis(phthalic anhydride). Both random- and block structures were prepared by varying the timing of monomer addition to the polymerization reaction. The polymers were converted to their acid forms and then cast into films. 1H NMR, FTIR, and non-aqueous titration verified the degree of polymer sulfonation. The block copolymers showed higher water uptake and proton conductivities than random copolymers with similar ion exchange capacity (IEC) values. These differences became pronounced as the IEC value was increased.

AB - A series of sulfonated copolyimides was prepared from 4,4-oxydianiline, sulfonated 4,4′-oxydianiline, and 4,4′-(4,4′- isopropylidenediphenoxy) bis(phthalic anhydride). Both random- and block structures were prepared by varying the timing of monomer addition to the polymerization reaction. The polymers were converted to their acid forms and then cast into films. 1H NMR, FTIR, and non-aqueous titration verified the degree of polymer sulfonation. The block copolymers showed higher water uptake and proton conductivities than random copolymers with similar ion exchange capacity (IEC) values. These differences became pronounced as the IEC value was increased.

UR - http://www.scopus.com/inward/record.url?scp=84871613793&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84871613793&partnerID=8YFLogxK

U2 - 10.1007/s10853-012-6873-5

DO - 10.1007/s10853-012-6873-5

M3 - Article

VL - 48

SP - 1303

EP - 1309

JO - Journal of Materials Science

JF - Journal of Materials Science

SN - 0022-2461

IS - 3

ER -