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Interconnected interface enhanced electrical properties of graphite in bio-based epoxy from insulating to conductor composites

Mohd Rus, Anika Zafiah and Abdullah, Nur Munirah and Abdullah, Mohammad Faiz Liew (2015) Interconnected interface enhanced electrical properties of graphite in bio-based epoxy from insulating to conductor composites. In: International conference on Green Computing and Engineering Technology (ICGCET) 2015, 25-26 July 2015, Dubai, UAE.

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Abstract

The fabrication and characterization of composite films of graphite/bioepoxy is disclosed. Thin films of ~0.1 mm thick are prepared using a simple solution mixing with mass proportion of 1/0.5 (biomonomer/Methylene Diphenyl Diisocyanate, MDI), upon differ treated graphite weight loading (5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.%, 30 wt.%) and drop casting at room temperature. The morphologic study by FE-SEM shows a homogeneously dispersed and strong interface between the graphite and the bioepoxy material. Ultraviolet-visible (UV-vis) spectrophotometer are performed to evaluate the changes in adsorption spectra arising with the increasing of graphite weight loading (wt.%) into the bio-based matrix. An eye opening I-V characteristic of the thin films where the percolation threshold occurs at higher graphite loading (20 wt.%, 25 wt.% and 30 wt.%) gives conductivity of 103-104 S/m. Whilst lower graphite loading (5 wt.%, 10 wt.% and 15 wt.%) somehow need further discussion. The influence of graphite in bioepoxy materials is paramount as it across insulatingsemiconductor-conductor applications.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: bioepoxy; graphite-bioepoxy composites; insulating-semiconductor-conductor; strong interface
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
Depositing User: Normajihan Abd. Rahman
Date Deposited: 25 Oct 2015 06:51
Last Modified: 25 Oct 2015 06:51
URI: http://eprints.uthm.edu.my/id/eprint/7270
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