Molecular weight dependence of chain conformation and counterion dissociation of poly(xylylene tetrahydrothiophenium chloride) in the salt-free semidilute aqueous solutions

Horng-Long Cheng, King Fu Lin

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The chain conformations of poly(xylylene tetrahydrothiophenium chloride) (PXT) in the salt-free semidilute aqueous solutions, estimated from the double-logarithmic plots of reduced viscosity vs segmental concentrations, were found to be more extended when the molecular weight or chain length was decreased. The dissociation extent of counterions from the PXT chains estimated from the ionic conductivity measurements was also increased. Besides, when the molecular weight was over 150 000 g/mol, the chain conformations were influenced more by the chain length than the counterion dissociation.

Original languageEnglish
Pages (from-to)7287-7290
Number of pages4
JournalLangmuir
Volume18
Issue number20
DOIs
Publication statusPublished - 2002 Oct 1

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Chain length
Conformations
Chlorides
molecular weight
Salts
Molecular weight
chlorides
dissociation
aqueous solutions
salts
Ionic conductivity
Viscosity
molecular chains
ion currents
plots
viscosity

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

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abstract = "The chain conformations of poly(xylylene tetrahydrothiophenium chloride) (PXT) in the salt-free semidilute aqueous solutions, estimated from the double-logarithmic plots of reduced viscosity vs segmental concentrations, were found to be more extended when the molecular weight or chain length was decreased. The dissociation extent of counterions from the PXT chains estimated from the ionic conductivity measurements was also increased. Besides, when the molecular weight was over 150 000 g/mol, the chain conformations were influenced more by the chain length than the counterion dissociation.",
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N2 - The chain conformations of poly(xylylene tetrahydrothiophenium chloride) (PXT) in the salt-free semidilute aqueous solutions, estimated from the double-logarithmic plots of reduced viscosity vs segmental concentrations, were found to be more extended when the molecular weight or chain length was decreased. The dissociation extent of counterions from the PXT chains estimated from the ionic conductivity measurements was also increased. Besides, when the molecular weight was over 150 000 g/mol, the chain conformations were influenced more by the chain length than the counterion dissociation.

AB - The chain conformations of poly(xylylene tetrahydrothiophenium chloride) (PXT) in the salt-free semidilute aqueous solutions, estimated from the double-logarithmic plots of reduced viscosity vs segmental concentrations, were found to be more extended when the molecular weight or chain length was decreased. The dissociation extent of counterions from the PXT chains estimated from the ionic conductivity measurements was also increased. Besides, when the molecular weight was over 150 000 g/mol, the chain conformations were influenced more by the chain length than the counterion dissociation.

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