Use of Kramers-Kronig Transform and Vogel-Fulcher-Tammann Equation to Probe the Molecular Dynamics of Polyamide 10.10 Nanocomposites

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Data de publicação
2023
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Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
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0
Autores
Pinto G.M.
Helal E.
Ribeiro H.
David E.
Fechine G.J.M.
Demarquette N.R.
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© 2023 IEEE.A fundamental knowledge of polymer-nanoparticle interactions, and their impact on polymer dynamics, is essential for successfully achieving the desired characteristics of polymer nanocomposites. Within that scope, broadband dielectric spectroscopy (BDS) was used as a tool to investigate the effect of different 2D materials, i.e., graphene oxide (GO), hexagonal-boron nitride (h-BN), and molybdenum disulfide textMoS2) on the molecular dynamics of polyamide 10.10 (PA 1010) nanocomposites at extremely low contents. It was verified that the 2D materials increase the activation energy (E-A) of the α process in PA 1010, which indicates that the molecular dynamics are restricted by the two-dimensional structure of such particles. This is further evidenced by changes in the shape of the dielectric loss curve during interfacial polarization, which was enhanced for the nanocomposites.
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Activation energy E , Broadband dielectric spectroscopy , Graphene oxides , Kramers-Kronig transforms , Nanoparticle interaction , Polymer dynamics , Polymer nanocomposite , Polymer nanoparticles , Polymer-nanocomposite , Vogel-Fulcher-Tammann equation
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