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Multifunctional bionanocomposites with ultraviolet blocking, infrared reflection and thermal conductivity
Author(s) -
Decol Marindia,
Pachekoski Wagner M.,
Becker Daniela
Publication year - 2020
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.25482
Subject(s) - materials science , nanocomposite , ultraviolet , nanoparticle , thermal conductivity , chemical engineering , infrared , conductivity , composite material , nanotechnology , optoelectronics , optics , physics , engineering , chemistry
The objective of this paper is investigating the effect of different localizations of titanium dioxide (TiO 2 ) and hexagonal boron nitride (hBN) nanoparticles in the poly(lactic acid) (PLA)/poly(ε‐caprolactone) (PCL) blends on the ultraviolet (UV) blocking, infrared reflection (NIR), and thermal conductivity of the nanocomposites for the fabrication of bionanocomposites with high performance. Transmission electron microscopy images demonstrated that the different mixing sequences induced different nanoparticle localization in the immiscible PCL/PLA blend. These different localizations yielded differences in the properties of the hybrid quaternary nanocomposite. When the nanoparticles had different localizations, TiO 2 at the interface and hBN in the PCL phase, the thermal conductivity was 0.86 Wm −1 K −1 , 100% of UV radiation ( λ = 300 nm) was blocked and 74% of NIR radiation was reflected. This nanocomposite has a strong potential for application as a multifunctional biodegradable film for agriculture, capable of absorbing UV radiation, reflecting NIR radiation, and conducting thermal energy.