Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 138, Issue 4, Pages -Publisher
WILEY
DOI: 10.1002/app.49731
Keywords
coatings; composites; manufacturing; nanoparticles; nanowires and nanocrystals; sensors and actuators
Categories
Funding
- Italian Ministry of Research [ARS01-01120]
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This study focused on the fabrication of nanocomposites based on zinc oxide nanostructures and nanocellulose dispersed in a UV-cured acrylic matrix, aiming for functional coatings for self-powered applications. The piezoelectric behavior of the nanocomposites was significantly influenced by the nitride layer and proof mass insertion, leading to improved piezoelectric response.
This work is aimed at fabricating nanocomposites based on zinc oxide (ZnO) nanostructures and nanocellulose dispersed in a UV-cured acrylic matrix (EC) for application as functional coatings for self-powered applications. Morphological, thermal, and dynamic mechanical properties of the nanocomposites were characterized by X-Ray diffractometry (XRD), scanning electron microscopy, and differential scanning calorimetry. The piezoelectric behavior was evaluated in terms of root mean square (RMS) open circuit voltage, at different accelerations applied to cantilever beams. The generated voltage was correlated with ZnO nanostructures morphology, aluminum nitride film integration on the beam and proof mass insertion at the tip. Nitride layer increased the RMS voltage from 1 to 2.4 mV up to 3.9 mV (using ZnO nanoflowers). As confirmed by XRD analyses, the incorporation of ZnO nanostructures into the acrylic matrix favored an ordered structural arrangement of the deposited AlN layer, hence improving the piezoelectric response of the resulting nanocomposites. With proof mass insertion, the output voltage was further increased, reaching 4.5 mV for the AlN-coated system containing ZnO nanoflowers.
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