Effect of covalent modification of graphene on electromagnetic interference shielding of thermoplastic urethane/graphene nanocomposites

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Nasr Esfahani Azam; KATBAB ALI ASGHAR

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Journal: Journal of Applied Research in Chemistry Year:2019 | Volume:13 | Issue:2 Page(s): 5-17

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Information Journal Paper

Title

Effect of covalent modification of graphene on electromagnetic interference shielding of thermoplastic urethane/graphene nanocomposites

Author(s)

Nasr Esfahani Azam | KATBAB ALI ASGHAR | Issue Writer Certificate

Keywords

Electromagnetic interference shieldingQ1

nanocompositesQ1

thermoplastic urethaneQ1

nanographeneQ1

interfacial interactionQ1

Abstract

Conducting polymers represent a class of materials that possess unique combination of electrical conductivity, processability, and mechanical properties. One of the most important applications of these materials is Electromagnetic interference shielding which are receiving increasing attention by progress of technology and increment in the amount of electromagnetic waves sources. In the present study, attempts have been made to prepare improved Electromagnetic interference shielding (EMI-SE) material of flexible composite films based on thermoplastic urethane (TPU) and graphene nanosheets. For this purpose, the prepared graphene oxide using Hummer’ s method has been thermally reduced. Then the surface of the graphene was grafted with polar and long molecules of 2-aminoethyl methacrylate (AEMA) and denoted as functionalized graphene nanosheets (FGN). Then the nanocomposites with various loadings of FGN were fabricated by solution mixing. The increased compatibility between TPU segments and FGN due to graphene modification leads to increase in electrical conductivity. Moreover, the intensified interactions and improved dispersion state of the FGN increase viscous motions and energy dissipation which leads to higher EMI SE. Results showed that the TPU based nanocomposite containing only 5 vol. % of FGN attenuate electromagnetic wave energy up to 99. 8%.

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APA: Copy

Nasr Esfahani, Azam, & KATBAB, ALI ASGHAR. (2019). Effect of covalent modification of graphene on electromagnetic interference shielding of thermoplastic urethane/graphene nanocomposites. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), 13(2 ), 5-17. SID. https://sid.ir/paper/180266/en

Vancouver: Copy

Nasr Esfahani Azam, KATBAB ALI ASGHAR. Effect of covalent modification of graphene on electromagnetic interference shielding of thermoplastic urethane/graphene nanocomposites. JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC)[Internet]. 2019;13(2 ):5-17. Available from: https://sid.ir/paper/180266/en

IEEE: Copy

Azam Nasr Esfahani, and ALI ASGHAR KATBAB, “Effect of covalent modification of graphene on electromagnetic interference shielding of thermoplastic urethane/graphene nanocomposites,” JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC), vol. 13, no. 2 , pp. 5–17, 2019, [Online]. Available: https://sid.ir/paper/180266/en

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