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Synthesis and characterization of UV ‐curable nanocellulose/ ZnO / AlN acrylic flexible films: Thermal, dynamic mechanical and piezoelectric response
Author(s) -
Signore Maria Assunta,
De Pascali Chiara,
Duraccio Donatella,
Malucelli Giulio,
Fioravanti Ambra,
Melissano Enrico,
Martucci Maria Concetta,
Masieri Maurizio,
Siciliano Pietro,
Francioso Luca
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.49731
Subject(s) - materials science , nanocomposite , composite material , scanning electron microscope , nanocellulose , differential scanning calorimetry , nanostructure , chemical engineering , nanotechnology , cellulose , engineering , physics , thermodynamics
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.