ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
Work behaviours and training effects of artificial muscle based onelectrochemomechanical strain (ECMS) of conducting polymer, polypyrrole (PPy) films havebeen studied under tensile stress up to 5 MPa. PPy films were electrochemically deposited indodecylbenzene sulfonic acid. Cyclic voltammetry and ECMS were measured in 1M NaClaqueous solutions. At higher stress, a larger creeping due to the conformation change, slippingand/or breaking of polymer chains was observed. After the experience of large tensile stress anappreciable increase of strain (training effect) was observed, when the film was actuated at lowertensile stress. The training effect was discussed in terms of the relaxation of anisotropic straininduced during the creeping. The conversion efficiency from electrical to mechanical energies was0.07 % at 3 - 4 MPa being the maximum. Degradation of film was found to be accelerated underhigher tensile stress from the measurement of conductivity
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.61.122.pdf
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