Pengoptimuman parameter sonikasi dan pengacauan magnetik bagi mendapatkan penyerakan sebati komposit kuprum-grafin berdasarkan sifat morfologi

Translated title of the contribution: Optimization of sonication and magnetic stirrer parameter for copper-graphene composite’s homogeneous dispersion from morphological properties

Nor Nabilla Kadiman, Julie Elvyana Romli, Norhamidi Muhamad, Abu Bakar Sulong, Farhana Mohd Foudzi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Currently, graphene is widely discussed among researchers due to its thermal flowability that can improve the properties of composite materials. This research used the addition of graphene in copper matrix with a combination of binders which are polyethylene glycol (PEG), polymethyl methacrylate (PMMA) and stearic acid. The use of graphene as a filler material in copper matrix is a new approach in enhancing the thermal conductivity of the product produced. However, the additions of graphene in copper matrix can produce uneven composite because of the agglomeration of graphene particles. Therefore, sonication and magnetic stirring methods during pre-mixing process were used to produce a uniform feedstock with a better dispersion of graphene with minimum agglomeration. Sonication process temperature was set at 55C with different sonication duration which is 30, 60 and 90 min. For the magnetic stirring process, the parameters are 55C for 21 h at different speeds such as 300, 350 and 400 rpm. Field Emission Scanning Electron Microscope (FESEM) and EDX Mapping were carried out to observe the dispersion of graphene in the copper graphene composites. It was found that, better results were obtained after sonication and magnetic stirring process conducted. The best dispersion with more uniform and homogeneous was obtained at 60 min sonication time and medium magnetic stirring speed at 350 rpm. Graphene particles were found less grouping and did not re-agglomerate. This homogeneous dispersion made the interface relationship between copper and graphene particles better and porosities for the fabrication of final parts reduced.

Original languageMalay
Pages (from-to)1039-1043
Number of pages5
JournalSains Malaysiana
Volume47
Issue number5
DOIs
Publication statusPublished - 1 May 2018

Fingerprint

Sonication
Graphite
Copper
Composite materials
Agglomeration
Polymethyl Methacrylate
Field emission
Feedstocks
Binders
Fillers
Energy dispersive spectroscopy
Thermal conductivity
Electron microscopes
Porosity
Scanning
Fabrication

ASJC Scopus subject areas

  • General

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Pengoptimuman parameter sonikasi dan pengacauan magnetik bagi mendapatkan penyerakan sebati komposit kuprum-grafin berdasarkan sifat morfologi. / Kadiman, Nor Nabilla; Romli, Julie Elvyana; Muhamad, Norhamidi; Sulong, Abu Bakar; Foudzi, Farhana Mohd.

In: Sains Malaysiana, Vol. 47, No. 5, 01.05.2018, p. 1039-1043.

Research output: Contribution to journalArticle

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