Controlled Chemical Polymerization Method for Processing Conducting Polymers Part 2

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Authors
  1. Freund, M.S.
Corporate Authors
Defence R&D Canada - Atlantic, Dartmouth NS (CAN);Manitoba Univ, Winnipeg MAN (CAN) Dept of Chemistry
Abstract
Potential applications of conducting polymers have attracted considerable attention over the past two decades. However, poor processability has limited the widespread utilization of these materials. To overcome this problem, several approaches have been pursued for the production of soluble conducting polymers (e.g., attaching bulky side chains to the polymer backbone). These methods have resulted in increased solubility; however the conductivity typically decreases significantly. In this report, we extend our proof of concept study that was originally demonstrated with a metastable mixture of monomer and oxidant to the formation of polythiophene. The approach allows facile processing of solutions (e.g., casting, spin coating, air-brush and painting) followed by in situ polymerization. In addition, this work explores the ability of this approach for the formation of interpenetrating polymer networks (IPNs). Specifically, we have focused on the addition of a nonconducting polymer into the metastable mixture as a way to generate conducting polymers composites. Films obtained with this method were smooth, homogeneous and well-behaved. The production of composites addresses a second problem that has restricted industrial applications of conducting polymers: environmental stability. This new methodology could lead to new composite materials combining the electronic properties of conducting polymers with the robust properties of a tough polymer host.

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Keywords
conducting polymer;polypyrrole;polythiophene;processing;solubility
Report Number
DRDC-ATLANTIC-CR-2005-130 — Contractor Report (Final Report)
Date of publication
01 Jul 2005
Number of Pages
38
DSTKIM No
CA026613
CANDIS No
524500
Format(s):
Electronic Document(PDF)

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