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Title: Optical properties of graphene-based materials in transparent polymer matrices

Abstract

Different aspects of graphene-based materials (GBMs) and GBM-nanocomposites have been investigated due to their intriguing features; one of these features is their transparency. Transparency of GBMs has been of an interest to scientists and engineers mainly with regard to electronic devices. In this study, optical transmittance of structural, purpose-made nanocomposites reinforced with GBMs was analyzed to lay a foundation for optical microstructural characterization of nanocomposites in future studies. Two main types of GBM reinforcements were studied, graphene oxide (GO) and graphite nanoplates (GNPs). The nanocomposites investigated are GO/poly(vinyl alcohol), GO/sodium alginate, and GNP/epoxy with different volume fractions of GBMs. Together with UV-visible spectrophotometry, image-processing-assisted micro and macro photography were used to assess the transparency of GBMs embedded in the matrices. The micro and macro photography methods developed were proven to be an alternative way of measuring light transmittance of semi-transparent materials. It was found that there existed a linear relationship between light absorbance and a volume fraction of GBMs embedded in the same type of polymer matrices, provided that the nanocomposites of interest had the same thicknesses. This suggests that the GBM dispersion characteristics in the same type of polymer are similar and any possible change in crystal structure ofmore » polymer due to different volumetric contents of GBM does not have an effect on light transmittance of the matrices. The study also showed that the same types of GBMs could display different optical properties in different matrix materials. The results of this study will help to develop practical microstructural characterization techniques for GBM-based nanocomposites.« less

Authors:
; ;  [1];  [2]
  1. Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, LE11 3TU (United Kingdom)
  2. Advanced Polymer Materials Group, University Politehnica of Bucharest, 132 Calea Grivitei, 010737 Bucharest (Romania)
Publication Date:
OSTI Identifier:
22590481
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CRYSTAL STRUCTURE; ELECTRONIC EQUIPMENT; GRAPHENE; GRAPHITE; IMAGE PROCESSING; MATRIX MATERIALS; MICROSTRUCTURE; NANOCOMPOSITES; OPACITY; OXIDES; PHOTOGRAPHY; PVA; SPECTROPHOTOMETRY; THICKNESS; VISIBLE RADIATION

Citation Formats

Bayrak, Osman, Demirci, Emrah, E-mail: E.Demirci@lboro.ac.uk, Silberschmidt, Vadim V., and Ionita, Mariana. Optical properties of graphene-based materials in transparent polymer matrices. United States: N. p., 2016. Web. doi:10.1063/1.4961674.
Bayrak, Osman, Demirci, Emrah, E-mail: E.Demirci@lboro.ac.uk, Silberschmidt, Vadim V., & Ionita, Mariana. Optical properties of graphene-based materials in transparent polymer matrices. United States. doi:10.1063/1.4961674.
Bayrak, Osman, Demirci, Emrah, E-mail: E.Demirci@lboro.ac.uk, Silberschmidt, Vadim V., and Ionita, Mariana. 2016. "Optical properties of graphene-based materials in transparent polymer matrices". United States. doi:10.1063/1.4961674.
@article{osti_22590481,
title = {Optical properties of graphene-based materials in transparent polymer matrices},
author = {Bayrak, Osman and Demirci, Emrah, E-mail: E.Demirci@lboro.ac.uk and Silberschmidt, Vadim V. and Ionita, Mariana},
abstractNote = {Different aspects of graphene-based materials (GBMs) and GBM-nanocomposites have been investigated due to their intriguing features; one of these features is their transparency. Transparency of GBMs has been of an interest to scientists and engineers mainly with regard to electronic devices. In this study, optical transmittance of structural, purpose-made nanocomposites reinforced with GBMs was analyzed to lay a foundation for optical microstructural characterization of nanocomposites in future studies. Two main types of GBM reinforcements were studied, graphene oxide (GO) and graphite nanoplates (GNPs). The nanocomposites investigated are GO/poly(vinyl alcohol), GO/sodium alginate, and GNP/epoxy with different volume fractions of GBMs. Together with UV-visible spectrophotometry, image-processing-assisted micro and macro photography were used to assess the transparency of GBMs embedded in the matrices. The micro and macro photography methods developed were proven to be an alternative way of measuring light transmittance of semi-transparent materials. It was found that there existed a linear relationship between light absorbance and a volume fraction of GBMs embedded in the same type of polymer matrices, provided that the nanocomposites of interest had the same thicknesses. This suggests that the GBM dispersion characteristics in the same type of polymer are similar and any possible change in crystal structure of polymer due to different volumetric contents of GBM does not have an effect on light transmittance of the matrices. The study also showed that the same types of GBMs could display different optical properties in different matrix materials. The results of this study will help to develop practical microstructural characterization techniques for GBM-based nanocomposites.},
doi = {10.1063/1.4961674},
journal = {Applied Physics Letters},
number = 8,
volume = 109,
place = {United States},
year = 2016,
month = 8
}
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