Reduction of Permittivity in Epoxy Nanocomposites at Low Nano-filler Loadings

Author

Singha, Santanu ; Thomas, M. Joy

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Sci., Bangalore

fYear

2008

fDate

26-29 Oct. 2008

Firstpage

726

Lastpage

729

Abstract

Experimental studies reveal a reduction in the values of permittivity for epoxy nanocomposites at low filler loadings as compared to neat epoxy over a wide frequency range. This permittivity reduction is attributed to the interaction dynamics between nanoparticles and epoxy chains at the interface region and interestingly, this interaction has also been found to influence the glass transition temperatures (T_g) of the examined nanocomposite systems. Accordingly, a dual nanolayer interface model for an epoxy based nanocomposite system is analyzed to explain the obtained permittivity characteristics.

Keywords

glass transition; nanocomposites; nanoparticles; permittivity; epoxy chains; epoxy nanocomposites; glass transition; low nanofiller loadings; nanoparticles; permittivity reduction; Dielectric measurements; Frequency measurement; Impedance measurement; Nanocomposites; Nanoparticles; Permittivity measurement; Polarization; Polymers; Temperature measurement; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2008. CEIDP 2008. Annual Report Conference on

Conference_Location

Quebec, QC

Print_ISBN

978-1-4244-2548-8

Electronic_ISBN

978-1-4244-2549-5

Type

conf

DOI

10.1109/CEIDP.2008.4772804

Filename

4772804