The influence of thermal cycling and compressive force on the resistance of poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonic acid)-coated surfaces
Lam, L., Swingler, J. and McBride, J.W. (2006) The influence of thermal cycling and compressive force on the resistance of poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonic acid)-coated surfaces. Journal of Applied Polymer Science, 101, (4), 2445-2452. (doi:10.1002/app.23213).
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There is an increasing interest in the use of conducting polymers for a wide variety of applications. This includes the study and development of alternative contact-connector materials. The main aim is to achieve overall improvements in performance as well as cost effectiveness. Currently, extrinsic conducting polymers (ECPs) are employed as conductive coats or adhesives at contact interfaces.
However, frictional abrasion within the metal-doped polymer (ECP) causes instability in the resistance. It is important to overcome this fretting effect, especially in automotive applications; hence, the possibilities of employing intrinsically conducting polymers (ICPs) are explored. Flat contact film coatings have been fabricated in-house using poly(3,4-ethylenedioxythiopene)/poly(4-styrenesulfonic acid) (PEDOT/PSS) with dimethylformamide as the secondary solvent. Resistance is measured using the four-wire method.
The conductivities of the PEDOT/PSS-coated contacts are found to be in the order of 10-2 S cm-1. The change of resistance under varying compression forces has been found to be repeatable. The thermal effects on these contacts are also studied and the results are depicted as exponential negative temperature coefficients of resistance.
|Keywords:||fretting, intrinsically conducting polymer, conductivity, contact connector, temperature coefficients of resistance|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
|Divisions:||University Structure - Pre August 2011 > School of Engineering Sciences
|Date Deposited:||14 Mar 2006|
|Last Modified:||25 Apr 2013 11:33|
|Contributors:||Lam, L. (Author)
Swingler, J. (Author)
McBride, J.W. (Author)
|Date:||15 August 2006|
|Contact Email Address:||email@example.com|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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