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Vapor phase polymerization of PEDOT on silicone rubber as flexible large strain sensor

1 Department Mechanical Engineering, University of Auckland, New Zealand;
2 Department of Materials Engineering, ENSICAEN, CAEN, France

Topical Section: Responsive, Active and Smart materials

This paper presents a flexible large strain sensor made from ethylenedioxythiophene deposited on silicone rubber (Ecoflex® 00-30) via vacuum assisted vapor phase polymerization (VPP) process. EDOT was used due to its stability when exposed to the atmosphere. VPP is a very simple process requiring only a vacuum bell jar and a vacuum pump. Ferrite chloride (FeCl3) dissolved in tethrahydrofuran was used as the oxidant to make the resulting poly(3,4-ethylenedioxythiophene) (PEDOT) conductive. THF was used because it swells Ecoflex® for better infusion of oxidant and PEDOT adherence. The sensor performs reliably up to 80% strain with a gauge factor of ~2.4 and small hysteresis.
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1. Ariano P, Accardo D, Lombardi M, et al. (2015) Polymeric materials as artificial muscles: an overview. J Appl Biomater Funct Mater 13: 1-9.

2. Cochrane C, Lewandowski M, and Koncar V (2010) A flexible strain sensor based on a conductive polymer composite for in situ measurement of parachute canopy deformation. Sensors 10: 8291-8303.    

3. Calvert P, Duggal D, Patra P, et al. (2008) Conducting polymer and conducting composite strain sensors on textiles. Mol Cryst Liq Cryst 484: 291-302.

4. Jensen T, Radwin R, and Webster J (1991) A conductive polymer sensor for measuring external finger forces. J Biomech 24: 851-858.    

5. Castellanos-Ramos J, Navas-González R, Macicior H, et al. (2010) Tactile sensors based on conductive polymers. Microsyst Technol 16: 765-776.    

6. Pan L, Chortos A, Yu G, et al. (2014) An ultra-sensitive resistive pressure sensor based on hollow-sphere microstructure induced elasticity in conducting polymer film. Nat Comm 5: 3002.

7. Tjahyono A, Aw K, and Travas-Sejdic J (2012) A novel polypyrrole and natural rubber based flexible large strain sensor. Sensor Actuat B-Chem 166-167: 426-437    

8. Groenendaal L, Jonas F, Freitag D, et al. (2000) Poly(3,4-ethylenedioxythiophene) and its derivatives: Past, present, and future. Adv Mater 12: 481-494.    

9. Winther-Jensen B, Chen J, West K, et al. (2004) Vapor phase polymerization of pyrrole and thiophene using iron(III) sulfonates as oxidizing agents. Macromolecules 37: 5930-5935.    

10. Winther-Jensen B, West K (2004) Vapor-phase polymerization of 3,4-ethylenedioxythiophene: A route to highly conducting polymer surface layers. Macromolecules 37: 4538-4543.    

11. Kim J, Kim E, Won Y, et al. (2003) The preparation and characteristics of conductive poly(3,4-ethylenedioxythiophene) thin film by vapor-phase polymerization. Synthetic Met 139: 485-489.    

12. Winther-Jensen B, Krebs F (2006) High-conductivity large-area semi-transparent electrodes for polymer photovoltaics by silk screen printing and vapour-phase deposition. Sol Energ Mat Sol C 90: 123-132.    

13. Tjahyono A, Aw K, Travas-Sejdic J, et al. (2010) Flexible strain sensor for air muscles using polypyrrole coated rubber. Electroactive polymer Actuators and Devices (EAPAD), Yoseph Bar-Coned (ed.), Proceeding of SPIE, 7642, 764228/1-764228/8.

14. Ecoflex® Series Product Overview. Available from http://www.smooth-on.com/tb/files/ECOFLEX_SERIES_TB.pdf

15. Choi J, Cho K, and Yim J (2010) Micro-patterning of vapor-phase polymerized poly(3,4-ethylenedioxythiophene) (PEDOT) using ink-jet printing/soft lithography. Eur Polym J 46: 389-396.    

16. Tenhaeff W, Gleason K (2008) Initiated and oxidative chemical vapor deposition of polymeric thin films: iCVD and oCVD. Adv Funct Mater 18: 979-992.    

17. Dreyfuss P (1982) Poly(tethra-hydrofuran) Polymer monograph, Volume 8. Gordon and Breach Science Publishers, 10.

18. Gleason K (2015) CVD Polymers. Fabrication of organic surfaces and devices. Wiley-VCH, 236.

19. Tjahyono, A (2013) Development of conducting polymer based flexible position sensor for the control of hand exoskeleton. [PhD Thesis]. [Auckland]: University of Auckland.

Copyright Info: © 2015, Kean C Aw, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

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