JCP Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

You Tube Flickr Twitter UniPHY Group iResearch App Facebook

Journal of Chemical Physics / Volume 128 / Issue 13 / ARTICLES / Polymers and Complex Systems

J. Chem. Phys. 128, 134905 (2008); doi:10.1063/1.2901048 (9 pages)

A conductivity study and calorimetric analysis of dried poly(sodium 4-styrene sulfonate)/poly(diallyldimethylammonium chloride) polyelectrolyte complexes

Árpád W. Imre, Monika Schönhoff, and Cornelia Cramer

Institut für Physikalische Chemie, Universität Münster, Corrensstr. 28/30, D-48149 Münster, Germany and Sonderforschungsbereich 458, Universität Münster, Germany

View MapView Map

(Received 8 January 2008; accepted 29 February 2008; published online 3 April 2008)

Ionically cross-linked polyelectrolyte complexes (PECs) of anionic poly(sodium 4-styrene sulfonate) (PSS) and cationic poly(diallyldimethylammonium chloride) (PDADMAC), xPSS⋅(1−x)PDADMAC, with molar fractions x ranging from 0.30 to 0.70, were prepared and subsequently dried. The PEC samples were analyzed by differential scanning calorimetry, and the ionic conductivity σdc of the samples was measured as a function of temperature by means of impedance spectroscopy. The thermograms display an endothermic peak in the temperature range of 90–143 °C, which is attributed to a glass transition of the PEC. The glass transition temperature Tg has a symmetric x dependence with a minimum at x = 0.50. The temperature dependence of σdcT is not affected by the glass transition. The ionic conductivity of the samples before drying is three orders of magnitude larger than σdc after drying; nevertheless, their activation enthalpies are identical. Arrhenius parameters obtained from the systematic study of several PEC compositions are discussed. The ionic conductivity of the PSS-rich samples is significantly higher than σdc of PDADMAC-rich samples. This implies a relatively high Na+ mobility as compared to Cl− mobility in PEC. In contrast to the symmetric x dependence of Tg, the conductivity of PEC increases and the activation enthalpy decreases with increasing x in the investigated composition range. A strong x dependence of σdc is observed for PSS-rich PEC, which is attributed to a significant variation in the mobility of the charge carriers.

© 2008 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL
    1. Materials and sample preparation
    2. Measurement techniques
  3. RESULTS AND DISCUSSION
    1. Thermal analysis and glass transition
    2. Ionic conductivity
      1. Kinetics
      2. Effect of drying
      3. Stoichiometric PEC with and without salt
      4. Composition and temperature dependence
    3. Ion dynamics
    4. Comparison of the conductivity values
  4. SUMMARY AND CONCLUSIONS

RELATED DATABASES

To view database links for this article, you need to log in.

KEYWORDS and PACS

Keywords

carrier mobility, differential scanning calorimetry, electric impedance, enthalpy, glass transition, ionic conductivity, polymer blends, polymer electrolytes

PACS

ARTICLE DATA

Permalink
http://link.aip.org/link/doi/10.1063/1.2901048

PUBLICATION DATA

ISSN:

0021-9606 (print)  
1089-7690 (online)

Publisher:

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.

For access to citing articles, you need to log in.


Figures (8) Tables (3)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)

Access to article objects (figures, tables, multimedia) requires a subscription; log in to view available files.
(Access to supplementary files, where available, is free for this journal.)



Close

Google Calendar

ADVERTISEMENT

Your Recent History Recent History Help

Recently Viewed

  1. A conductivity study and calorimetric analysis of dried poly(sodium 4-styrene sulfonate)/poly(diallyldimethylammonium chloride) polyelectrolyte complexes
  2. Infrared spectra of SF6−⋅HCOOH⋅Arn (n = 0–2): Infrared triggered reaction and Ar-induced reactive inhibition
  3. Accounting for the dependence of P(E′,E) on the maximum impact parameter in classical trajectory calculations: Application to the H2O–H2O collisional relaxation
  4. Koopmans’ springs to life
Go to AIP Home
Copyright © American Institute of Physics
close