Investigation of optical properties and glass transition temperature of nano-epoxy matrix

In this research work, nanocomposites were synthesized by addition of fractions (0.0, 0.02, 0.04 and 0.06) of multi-wall carbon nanotubes (MWCNTs) to epoxy resin to investigate the optical properties and glass transition temperature. Optical measurement shows that epoxy matrix films have high absorp...

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Bibliographic Details
Published in:Bulletin of materials science 2020-12, Vol.43 (1), p.32, Article 32
Main Authors: Al-Saadi, Tagreed M, Hussein, Bushra H, Aleabi, Suad H
Format: Article
Language:English
Subjects:
Absorptivity
Chemistry and Materials Science
Electrons
Energy
Energy gap
Engineering
Epoxy resins
Fractions
Glass transition temperature
Interfacial bonding
Materials Science
Multi wall carbon nanotubes
Nanocomposites
Nanomaterials
Optical measurement
Optical properties
Optics
Polymers
Refractivity
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Summary:In this research work, nanocomposites were synthesized by addition of fractions (0.0, 0.02, 0.04 and 0.06) of multi-wall carbon nanotubes (MWCNTs) to epoxy resin to investigate the optical properties and glass transition temperature. Optical measurement shows that epoxy matrix films have high absorption at the different MWCNTs fractions (0.0, 0.02, 0.04 and 0.06). The optical energy gaps for allowed direct transition were evaluated and found to decrease with increasing film fractions, precisely, from 2.85 to 1.32 eV when fractions increased from 0.0 to 0.06 of the matrix weights that indicated strong shifts at 435–935 nm with increasing fraction. The values of the absorption coefficient and extinction coefficient increased with fractions of MWCNTs while the refractive index and the real part of dielectric constant decreased with the fractions of MWCNTs. Also, the glass transition temperature was investigated and was found to increase with increasing fraction of carbon nanotube in the matrix.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-019-2004-0