Sains Malaysiana 41(4)(2012): 453-458

Sifat Magnet, Mikrostruktur dan Morfologi Komposit Getah Asli

Termoplastik Berpengisi Ferit NiZn/MWNT

(Magnetic Properties, Microstructure and Morphology of Thermoplastic Natural

Rubber Composite Reinforced with NiZn Ferrite/MWNT)

Lih-Jiun Yu*, Sahrim Hj. Ahmad, Ing Kong, Sivanesan Appadu

& Moayad Husein Flaifel

Pusat Pengajian Fizik Gunaan, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia

43600 Bangi, Selangor D. E., Malaysia.

Received: 7 June 2011 / Accepted: 24 August 2011

ABSTRACT

NiZn ferrite and carbon nanotube were blended with TPNR according to the mixing ratio 1:1. Filler addition effects on magnetic properties, microstructure, and morphology of the nanocomposite were studied. Saturation magnetization and coercive force of nanocomposites were found depend on the filler loading in the matrix. The interaction between both fillers in the TPNR matrix was found to effect on the magnetic properties. The hybrid fillers (NiZn ferrite and carbon nanotube) were distributed homogenous in the thermoplastic natural rubber matrix. The crystallinity of semi-amorphous polypropylene was found to decreases, opposite to the increment of fillers when the fillers content was increased.

Keywords: Hybrid composite; magnetic properties; thermoplastic natural rubber

ABSTRAK

Ferit NiZn dan nanotiub karbon diadunkan ke dalam getah asli termoplastik mengikut nisbah campuran 1:1. Kesan penambahan pengisi ke atas sifat magnet, struktur dan morfologi nanokomposit dikaji. Dua parameter magnet, iaitu pemagnetan tepuan dan daya koersif nanokomposit didapati bergantung kepada penambahan pengisi dalam matriks. Interaksi antara kedua-dua pengisi dalam matriks TPNR juga mempengaruh sifat magnet. Pengisi hibrid (ferit NiZn dan nanotiub karbon) bertabur sekata dalam matriks termoplastik getah asli. Kehabluran semi-amorfus fasa polipropilena didapati berlawanan dengan peningkatan kehabluran pengisi apabila kandungan pengisi bertambah

.

Kata kunci: Komposit getah asli termoplastik; komposit hybrid; sifat magnet

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*Corresponding author; email: y_jiun@hotmail.com