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Nanocomposite photoactuators based on an ethylene vinyl acetate copolymer filled with carbon nanotubes
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SYSNO ASEP 0398963 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nanocomposite photoactuators based on an ethylene vinyl acetate copolymer filled with carbon nanotubes Author(s) Czaniková, K. (SK)
Torras, N. (ES)
Esteve, J. (ES)
Krupa, I. (QA)
Kasák, P. (SK)
Pavlova, Ewa (UMCH-V) RID
Račko, D. (SK)
Chodák, I. (SK)
Omastová, M. (SK)Source Title Sensors and Actuators B - Chemical. - : Elsevier
Roč. 186, September (2013), s. 701-710Number of pages 10 s. Language eng - English Country CH - Switzerland Keywords actuator ; carbon nanotubes ; ethylene vinyl acetate copolymer Subject RIV CD - Macromolecular Chemistry Institutional support UMCH-V - RVO:61389013 UT WOS 000324223600094 DOI 10.1016/j.snb.2013.06.054 Annotation This paper reports strong, reversible actuation of nanocomposites on the base of ethylene vinyl acetate (EVA) filled with multiwalled (MWCNTs) and singlewalled carbon nanotubes (SWCNTs). The carbon nanotubes (CNTs) dispersion within the EVA matrix was ensured with pyrene-based compatibilizer and the alignment of the CNTs within a matrix was induced by shear stress to 50% applied as a prerequisite for unilateral photo-actuation. The CNT dispersion within EVA matrix was characterized by transmission electron microscopy (TEM). The dependence of the actuation stress as a function of CNTs concentration, energy and intensity of light was studied. Stress variation of actuation and relaxation were evaluated. The photo-actuation responses showed contraction under illumination up to 170 kPa for EVA-CNTs-based nanocomposites. Repeatability of photo-actuation process up to 100 cycles was observed. High optical-to-mechanical energy conversion factor (ηM) of 55 MPa W−1 for EVA nanocomposite containing 0.1 wt.% MWCNTm during illumination by red light-emitted diode (LED) is reported. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2014
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