Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Characterization of poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonate) (PEDOT:PSS) adsorption on cellulosic materials
Karlstad University, Faculty of Technology and Science.
Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.ORCID iD: 0000-0002-1256-1708
Karlstad University, Faculty of Technology and Science, Department of Chemical Engineering.
2009 (English)In: Cellulose (London), ISSN 0969-0239, E-ISSN 1572-882X, Vol. 16, no 5, 807-815 p.Article in journal (Refereed) Published
Place, publisher, year, edition, pages
2009. Vol. 16, no 5, 807-815 p.
National Category
Chemical Engineering
Research subject
Chemical Engineering
Identifiers
URN: urn:nbn:se:kau:diva-4567DOI: 10.1007/s10570-009-9303-3OAI: oai:DiVA.org:kau-4567DiVA: diva2:231898
Available from: 2009-08-18 Created: 2009-08-18 Last updated: 2015-10-19Bibliographically approved
In thesis
1. Preparation of Electroconductive Paper by Deposition of Conducting Polymer
Open this publication in new window or tab >>Preparation of Electroconductive Paper by Deposition of Conducting Polymer
2009 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The thesis describes an investigation into the interaction between the conducting polymer and cellulosic materials, and the preparation of electroconductive paper. The adsorption behavior of the conducting polymer onto cellulosic materials was characterized. Poly(3,4-ethylenedioxythiophene) doped with poly(4-styrene sulfonate) (PEDOT:PSS) was used as conducting polymer because of its attractive properties in terms of conductivity, water solubility, and environmental stability. The model substrate used for adsorption was microcrystalline cellulose (MCC). Various pH levels and salt concentrations were explored to completely understand the adsorption behavior of PEDOT:PSS. The variation in surface charge characteristics when the pH and salt concentration were changed was monitored by polyelectrolyte titration and zeta potential measurement. The adsorption isotherm showed a broad molecular distribution of the conducting polymer and considerable interaction between the polymer and MCC. As the pH of the solution was increased, the adsorbed amount decreased. With varying salt concentrations, the adsorption passed through a maximum. The extent of deposition of PEDOT:PSS on the surface of cellulosic fibers was investigated using X-ray Photoelectron Spectroscopy (XPS) with a commercial base paper as substrate. XPS analysis of dip-coated paper samples showed PEDOT enrichment on the surface. The degree of washing the dip-coated paper with acidic water did not significantly affect the PEDOT enrichment on the surface.

 

A base paper was coated with PEDOT:PSS blends to produce electroconductive papers. The bulk conductivities (σdc) of the coated papers were measured using a four-probe technique and impedance spectroscopy. One-side and two-side coating gave comparable conductivity levels. Various organic solvents added to the PEDOT:PSS dispersion at different concentrations showed various effects on the bulk conductivity of the coated paper. Blends containing sorbitol and isopropanol did not enhance the bulk conductivity of the coated paper, and at high concentrations these organic solvents lowered the conductivity. Paper samples coated with a PEDOT:PSS blend containing N-methylpyrrolidinone (NMP) and dimethyl sulfoxide (DMSO) exhibited a higher conductivity than when coated with pure PEDOT:PSS, due to conformational changes and their plasticizing effect. The effect of calendering was investigated and only the sample subjected to 174 kN/m line load after coating showed significant conductivity enhancement. The addition of TiO2 pigment lowered the bulk conductivity of the paper. Contact angle measurements were made to monitor the effect of coating the paper with PEDOT:PSS blends on the hydrophilicity of the paper samples. The amount of PEDOT:PSS deposited in the fiber network was determined using total sulfur analysis. Thus, this study makes use of conventional paper surface treatment as method for achieving bulk conductivity of paper in the semi-conductor range without significantly decreasing the paper strength.

Place, publisher, year, edition, pages
Karlstad: Karlstad University, 2009. 56 p.
Series
Karlstad University Studies, ISSN 1403-8099 ; 2009:37
Keyword
electroconductive paper, conducting polymer, adsorption, coating, organic solvents, bulk conductivity
National Category
Paper, Pulp and Fiber Technology
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-4478 (URN)978-91-7063-261-7 (ISBN)
Presentation
2009-09-04, 9C204 (Ericssonsalen), Universitetsgatan 2, 651 88 Karlstad, Karlstad University, 10:30 (English)
Opponent
Supervisors
Projects
Printed Polymer Electronics
Available from: 2009-08-24 Created: 2009-07-07 Last updated: 2011-10-31Bibliographically approved
2. Modification of Paper into Conductive Substrate for Electronic Functions: Deposition, Characterization and Demonstration
Open this publication in new window or tab >>Modification of Paper into Conductive Substrate for Electronic Functions: Deposition, Characterization and Demonstration
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The thesis investigates the modification of paper into an ion- and electron-conductive material, and as a renewable material for electronic device. The study stretches from investigating the interaction between the cellulosic materials and the conducting polymer to demonstrating the performance of the conductive paper by printing the electronic structure on the surface of the conductive paper. Conducting materials such as conducting polymer, ionic liquids, and multi-wall carbon nanotubes were deposited into the fiber networks.

In order to investigate the interaction between the conducting polymer and cellulosic material, the adsorption of the conducting polymer poly(3,4-ethylenedioxythiophene): poly(4-styrene sulfonate) (PEDOT:PSS) onto microcrystalline cellulose (MCC) was performed. Electroconductive papers were produced via dip coating and rod coating, and characterized. The Scanning Electron Microscopy (SEM) / Energy Dispersive Spectroscopy (EDS) images showed that the conducting polymer was deposited in the fiber and in fiber-fiber contact areas. The X-ray Photoelectron Spectroscopy (XPS) analysis of dip-coated paper samples showed PEDOT enrichment on the surface. The effects of fiber beating and paper formation, addition of organic solvents and pigments (TiO2, MWCNT), and calendering were investigated. Ionic paper was produced by depositing an ionic liquid into the commercial base paper. The dependence to temperature and relative humidity of the ionic conductivity was also investigated. In order to reduce the roughness and improve its printability, the ionic paper was surface-sized using different coating rods.  The bulk resistance increased with increasing surface sizing. The electrochemical performance of the ionic paper was confirmed by printing PEDOT:PSS on the surface. There was change in color of the polymer when a voltage was applied. It was demonstrated that the ionic paper is a good ionic conductor that can be used as component for a more compact electronic device construction.

Conductive paper has a great potential to be a flexible substrate on which an electronic structure can be constructed. The conduction process in the modified paper is due to the density of charge carriers (ions and electrons), and their short range mobility in the material. The charge carrying is believed to be heterogeneous, involving many charged species as the paper material is chemically heterogeneous.

Place, publisher, year, edition, pages
Karlstad: Karlstad University, 2011. 81 p.
Series
Karlstad University Studies, ISSN 1403-8099 ; 2011:28
Keyword
Ionic paper, electroconductive paper, flexible electronics, conducting polymer, ionic liquids, fiber network
National Category
Paper, Pulp and Fiber Technology
Research subject
Chemical Engineering
Identifiers
urn:nbn:se:kau:diva-7352 (URN)978-91-7063-361-4 (ISBN)
Public defence
2011-06-17, Nyquistsalen, 9C203, Karlstad University, Karlstad, 10:00 (English)
Opponent
Supervisors
Projects
Printed Polymer Electronics on Paper
Note

Fel ordningsnummer (2010:28) är angivet på omslaget av fulltextfilen.

Available from: 2011-05-26 Created: 2011-05-03 Last updated: 2017-08-11Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Montibon, ElsonJärnström, LarsLestelius, Magnus
By organisation
Faculty of Technology and ScienceDepartment of Chemical Engineering
In the same journal
Cellulose (London)
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 220 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf