Effect of nano-particle volume and surface characteristics on the bulk properties of epoxy nano-composite
Effect of nano-particle volume and surface characteristics on the bulk properties of epoxy nano-composite
Interphases in polymer nanocomposites play an important role. Understanding them is the key to developing efficiently designed nanocomposites with tailored properties. The aim of this study is to investigate the effect of nanoparticle volume and the effect of interphase between the core and shell on the dielectric properties, to further understand the characteristics of the surface between the nanoparticle and polymer. For this purpose, five types of nanoparticles were synthesized SiO2/SiO2, TiO2/SiO2, TiO2, SiO2 and hollow silica (h - SiO2) and epoxy nanocomposite samples were prepared. To confirm the successful synthesis of nanoparticles, FTIR spectra and TEM images are presented. Further, these samples were characterized by dielectric spectroscopy (0.1 Hz to 1 MHz). Core-shell nanocomposites showed significantly lower permittivity than composites with conventional, with h-SiO2 having the lowest permittivity. A typical β relaxation is also observed and its correlation to the degree of crosslinking is discussed. For h-SiO2, an additional relaxation peak at lower frequencies is observed. The origin of this peak is postulated to be either absorbed water or α – relaxation.
Core -Shell, Nanodielectrics, Hollow Silica, Epoxy Nanocomposite, Particle Interphase
Chaudhary, Sunny
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Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Vaughan, Alun
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Chaudhary, Sunny
e9feb00c-4cc9-4935-ad3f-2ee457d0207e
Andritsch, Thomas
8681e640-e584-424e-a1f1-0d8b713de01c
Vaughan, Alun
6d813b66-17f9-4864-9763-25a6d659d8a3
Chaudhary, Sunny, Andritsch, Thomas and Vaughan, Alun
(2020)
Effect of nano-particle volume and surface characteristics on the bulk properties of epoxy nano-composite.
In IEEE 2020 International Conference on Dielectrics.
IEEE..
(In Press)
(doi:10.1109/ICD46958.2020.9341845).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Interphases in polymer nanocomposites play an important role. Understanding them is the key to developing efficiently designed nanocomposites with tailored properties. The aim of this study is to investigate the effect of nanoparticle volume and the effect of interphase between the core and shell on the dielectric properties, to further understand the characteristics of the surface between the nanoparticle and polymer. For this purpose, five types of nanoparticles were synthesized SiO2/SiO2, TiO2/SiO2, TiO2, SiO2 and hollow silica (h - SiO2) and epoxy nanocomposite samples were prepared. To confirm the successful synthesis of nanoparticles, FTIR spectra and TEM images are presented. Further, these samples were characterized by dielectric spectroscopy (0.1 Hz to 1 MHz). Core-shell nanocomposites showed significantly lower permittivity than composites with conventional, with h-SiO2 having the lowest permittivity. A typical β relaxation is also observed and its correlation to the degree of crosslinking is discussed. For h-SiO2, an additional relaxation peak at lower frequencies is observed. The origin of this peak is postulated to be either absorbed water or α – relaxation.
Other
1325_Sunny Chaudhary_Effect of Nanoparticle Volume and Surface Characteristics on the Bulk
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Accepted/In Press date: 15 June 2020
Keywords:
Core -Shell, Nanodielectrics, Hollow Silica, Epoxy Nanocomposite, Particle Interphase
Identifiers
Local EPrints ID: 442549
URI: http://eprints.soton.ac.uk/id/eprint/442549
PURE UUID: 060b5e1a-24f7-4763-ac1d-f4898a32b711
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Date deposited: 17 Jul 2020 16:36
Last modified: 26 Nov 2021 03:17
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Contributors
Author:
Sunny Chaudhary
Author:
Thomas Andritsch
Author:
Alun Vaughan
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