TY - JOUR
T1 - Modeling dielectric permittivity of polymer composites filled with transition metal dichalcogenide nanoparticles
AU - Drozdov, Aleksey D.
AU - Christiansen, Jesper de Claville
PY - 2020/5/1
Y1 - 2020/5/1
N2 - A model is developed for the dielectric permittivity of polymer nanocomposites reinforced with transition metal dichalcogenide fillers at microwave frequencies. The model takes into account aggregation of nanoparticles into clusters (that involve both filler and matrix components) and the aspect ratio of aggregates. The governing equations involve four material parameters that are found by matching observations on the real and imaginary parts of the dielectric permittivity of polymers reinforced with MoS2 and WS2 micro- and nanospheres, MoS2 nanosheets and nanoflowers, and composite heterostructures formed by MoS2 and MoS2-CoS2 nanoparticles with graphene and reduced graphene oxide. Good agreement is demonstrated between results of simulation and the experimental data at frequencies in the S, X, and Ku bands of the electromagnetic spectrum. It is shown that composite heterostructures have superior dielectric properties compared with those of neat transition metal dichalcogenide nanoparticles.
AB - A model is developed for the dielectric permittivity of polymer nanocomposites reinforced with transition metal dichalcogenide fillers at microwave frequencies. The model takes into account aggregation of nanoparticles into clusters (that involve both filler and matrix components) and the aspect ratio of aggregates. The governing equations involve four material parameters that are found by matching observations on the real and imaginary parts of the dielectric permittivity of polymers reinforced with MoS2 and WS2 micro- and nanospheres, MoS2 nanosheets and nanoflowers, and composite heterostructures formed by MoS2 and MoS2-CoS2 nanoparticles with graphene and reduced graphene oxide. Good agreement is demonstrated between results of simulation and the experimental data at frequencies in the S, X, and Ku bands of the electromagnetic spectrum. It is shown that composite heterostructures have superior dielectric properties compared with those of neat transition metal dichalcogenide nanoparticles.
KW - Polymer composite
KW - dielectric permittivity
KW - microwave frequency
KW - transition metal dichalcogenide
UR - http://www.scopus.com/inward/record.url?scp=85085475862&partnerID=8YFLogxK
U2 - 10.1177/0021998320922601
DO - 10.1177/0021998320922601
M3 - Journal article
SN - 0021-9983
VL - 54
SP - 3841
EP - 3855
JO - Journal of Composite Materials
JF - Journal of Composite Materials
IS - 25
ER -