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Polyaniline. Preparation of a Conducting Polymer (IUPAC Technical Report)

Published/Copyright: September 1, 2009
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Chemistry International -- Newsmagazine for IUPAC
From the journal Chemistry International -- Newsmagazine for IUPAC Volume 24 Issue 5

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Highlights from Pure and Applied Chemistry

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Polyaniline. Preparation of a Conducting Polymer (IUPAC Technical Report)

by J. Stejskal and R. G. Gilbert

Pure and Applied Chemistry, Vol. 74, No. 5, pp. 857-867 (2002)

Eight persons from five institutions in different countries carried out polymerizations of aniline following the same preparation protocol. In a "standard" procedure, aniline hydrochloride was oxidized with ammonium peroxydisulfate in aqueous medium at ambient temperature. The yield of polyaniline was higher than 90% in all cases. The electrical conductivity of polyaniline hydrochloride thus prepared was 4.4 ± 1.7 S cm-1 (average of 59 samples), measured at room temperature. A product with defined electrical properties could be obtained in various laboratories by following the same synthetic procedure. The influence of reduced reaction temperature and increased acidity of the polymerization medium on polyaniline conductivity were also addressed. The conductivity changes occurring during the storage of polyaniline were monitored. The density of polyaniline hydrochloride was 1.329 g cm-3. The average conductivity of corresponding polyaniline bases was 1.4 x 108 S cm-1, the density being 1.245 g cm-1. Additional changes in the conductivity take place during storage. Aging is more pronounced in powders than in compressed samples. As far as aging effects are concerned, their assessment is relative. The observed reduction in the conductivity by ~10% after more than one-year storage is large but, compared with the low conductivity of corresponding polyaniline (PANI) base, such a change is negligible. For most applications, an acceptable level of conductivity may be maintained throughout the expected lifetime.

www.iupac.org/publications/pac/2002/7405/7405x0857.html

Published Online: 2009-09-01
Published in Print: 2002-09

© 2014 by Walter de Gruyter GmbH & Co.

Articles in the same Issue

  1. Contents
  2. Balancing Sources and Uses
  3. A Glance Into the Future
  4. The Special Topics Project
  5. Accomplishments During the Past Decade and Relationships With Industry
  6. Candid Chemistry
  7. IUPAC Representative’s Report on the 34th Codex Committee Session
  8. Young Chemists to the 39th IUPAC Congress, Ottawa, August 2003
  9. Chemical Education International
  10. The “Orange Book” Online
  11. IUPAC–Empfehlungen
  12. Chemical Actinometry
  13. Conducting Polymer Colloids and Nanofilms
  14. Information Essential for Characterizing a Flow-Based Analytical System (IUPAC Technical Report)
  15. Sulfate-Sensing Electrodes. The Lead- Amalgam/Lead-Sulfate Electrode (IUPAC Technical Report)
  16. Future Requirements In the Characterization of Continuous Fiber Reinforced Polymeric Composites (IUPAC Technical Report)
  17. Nomenclature for the C60-Ih and C70-D5h(6) Fullerenes (IUPAC Recommendations 2002)
  18. Molecular Basis of Biodiversity, Conservation, and Sustained Innovative Utilization (IUPAC Technical Report)
  19. Naming of New Elements (IUPAC Recommendations 2002)
  20. “Heavy Metals”–A Meaningless Term? (IUPAC Technical Report)
  21. Phane Nomenclature. Part II. Modification of the Degree of Hydrogenation and Substitution Derivatives of Phane Parent Hydrides (IUPAC Recommendations 2002)
  22. Harmonized Guidelines for Single- Laboratory Validation of Methods of Analysis (IUPAC Technical Report)
  23. Polyaniline. Preparation of a Conducting Polymer (IUPAC Technical Report)
  24. Studies on Biodegradable Poly[hexano-6- lactone] Fibers. Part 3. Enzymatic Degradation in Vitro (IUPAC Technical Report)
  25. Free-Radical Polymerization: Kinetics and Mechanism
  26. C2+ Nitroalkanes With Water or Organic Solvents: Binary and Multicomponent Systems
  27. Advanced Organic Chemistry Part A: Structure and Mechanisms Part B: Reactions and Synthesis
  28. Modern Coordination Chemistry–The Legacy of Joseph Chatt
  29. Biodiversity
  30. Macromolecules and Materials Science
  31. Nuclear Analytical Techniques in the Life Sciences
  32. Prohibiting Chemical Weapons
  33. Rejuvenating the Learning and Teaching of Chemistry 30 November–4 December 2002, Melbourne, Australia
  34. 4th Florida Heterocyclic Conference 10–12 March 2003, Gainesville, Florida, USA
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  36. Calendar of IUPAC Sponsored Conferences
https://doi.org/10.1515/ci.2002.24.5.26b

Articles in the same Issue

  1. Contents
  2. Balancing Sources and Uses
  3. A Glance Into the Future
  4. The Special Topics Project
  5. Accomplishments During the Past Decade and Relationships With Industry
  6. Candid Chemistry
  7. IUPAC Representative’s Report on the 34th Codex Committee Session
  8. Young Chemists to the 39th IUPAC Congress, Ottawa, August 2003
  9. Chemical Education International
  10. The “Orange Book” Online
  11. IUPAC–Empfehlungen
  12. Chemical Actinometry
  13. Conducting Polymer Colloids and Nanofilms
  14. Information Essential for Characterizing a Flow-Based Analytical System (IUPAC Technical Report)
  15. Sulfate-Sensing Electrodes. The Lead- Amalgam/Lead-Sulfate Electrode (IUPAC Technical Report)
  16. Future Requirements In the Characterization of Continuous Fiber Reinforced Polymeric Composites (IUPAC Technical Report)
  17. Nomenclature for the C60-Ih and C70-D5h(6) Fullerenes (IUPAC Recommendations 2002)
  18. Molecular Basis of Biodiversity, Conservation, and Sustained Innovative Utilization (IUPAC Technical Report)
  19. Naming of New Elements (IUPAC Recommendations 2002)
  20. “Heavy Metals”–A Meaningless Term? (IUPAC Technical Report)
  21. Phane Nomenclature. Part II. Modification of the Degree of Hydrogenation and Substitution Derivatives of Phane Parent Hydrides (IUPAC Recommendations 2002)
  22. Harmonized Guidelines for Single- Laboratory Validation of Methods of Analysis (IUPAC Technical Report)
  23. Polyaniline. Preparation of a Conducting Polymer (IUPAC Technical Report)
  24. Studies on Biodegradable Poly[hexano-6- lactone] Fibers. Part 3. Enzymatic Degradation in Vitro (IUPAC Technical Report)
  25. Free-Radical Polymerization: Kinetics and Mechanism
  26. C2+ Nitroalkanes With Water or Organic Solvents: Binary and Multicomponent Systems
  27. Advanced Organic Chemistry Part A: Structure and Mechanisms Part B: Reactions and Synthesis
  28. Modern Coordination Chemistry–The Legacy of Joseph Chatt
  29. Biodiversity
  30. Macromolecules and Materials Science
  31. Nuclear Analytical Techniques in the Life Sciences
  32. Prohibiting Chemical Weapons
  33. Rejuvenating the Learning and Teaching of Chemistry 30 November–4 December 2002, Melbourne, Australia
  34. 4th Florida Heterocyclic Conference 10–12 March 2003, Gainesville, Florida, USA
  35. 12th IUPAC International Symposium on Organo-Metallic Chemistry (OMCOS-12) 6–10 July 2003, Toronto, Canada
  36. Calendar of IUPAC Sponsored Conferences
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