Journal
NANOSCIENCE AND NANOTECHNOLOGY LETTERS
Volume 4, Issue 8, Pages 814-820Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/nnl.2012.1393
Keywords
Shape Memory Polymer; Electro-Responsive; Nanocomposites; Micromechanical
Funding
- Royal Academy of Engineering-Research Exchanges
- Royal Society-Research Grant [RG090609]
- Royal Society of Edinburgh
- Carnegie Trust Funding
- China-Scotland Higher Education Partnership from Scottish Government
- Innovative Electronic Manufacturing Research Centre (IeMRC) through the EPSRC [FS/01/02/10]
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Microstructure, thermo-mechanical, electrical properties and shape recovery efficiency of carbon nano-particles (CNPs) enhanced polystyrene (PS) nanocomposites were characterized. Dynamic mechanical thermal analysis showed an increase in glass transition temperature (T-g) and enhancement of the storage modulus for the polystyrene (PS) composites with the addition of CNPs. Instrumental nanoindentation experiments revealed micro-scale enhancement of mechanical properties by introducing the CNPs into the polymer matrix. Electrical conductivity and dielectric properties of the nanocomposites were dependent on CNP concentrations, testing frequency and temperature. Electro-triggering recovery of a microcantilever made from the CNP/PS shape memory nanocomposite was has been demonstrated and the recovery rates were studied as a function of applied voltage.
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