Sains Malaysiana 47(9)(2018): 2171–2178

http://dx.doi.org/10.17576/jsm-2018-4709-27

Puncture Resistance and Mechanical Properties of Graphene Oxide Reinforced Natural Rubber Latex

(Rintangan Tusukan dan Sifat Mekanik Lateks Getah Asli Berpengisi Oksida Grafin)

KAI YIN CHONG¹, CHIN HUA CHIA^1*, SARANI ZAKARIA¹, THI HAO PHAM², DAVID LUCAS² & SIEW XIAN CHIN³

¹Materials Science Program, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

²Medical Solutions Innovation Centre (R&D), Ansell N.P. Sdn. Bhd., Lot 80, Ayer Keroh Industrial Estate, 75450 Melaka, Malaysia

³ASASIpintar Program, Pusat PERMATApintar® Negara, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor Darul Ehsan, Malaysia

Diserahkan: 26 Mac 2018/Diterima: 23 Mei 2018

ABSTRACT

Natural rubber (NR) latex gloves are widely used as a very important barrier for healthcare workers. However, they can still be perforated easily by sharp devices and instruments. The aim of this study was to investigate the effect of the addition of graphene oxide (GO) to low-ammonia NR latex on its puncture resistance, mechanical properties and thermal stability. GO was synthesized using modified Hummers’ reaction. The produced GO was mixed into the NR latex solution at various doses (0.01-1.0 wt. %), followed by a coagulant dipping process using ceramic plates to produce film samples. Puncture resistance was enhanced by 12% with 1.0 wt. % GO/NR. Also, the incorporation of GO improved the stress at 300% and 500%, the modulus at 300% and 500% and the tear strength of low-ammonia NR latex films.

Keywords: Graphene oxide; natural rubber latex; puncture; tear strength; tensile strength

ABSTRAK

Sarung tangan lateks getah asli telah digunakan meluas sebagai perlindungan yang penting bagi pekerja penjagaan perubatan. Namun sarung tangan lateks getah asli masih mudah tertusuk oleh benda runcing dan tajam. Objektif kajian ini adalah untuk mengkaji kesan penambahan grafin oksida ke atas rintangan tusukan, sifat mekanik dan kestabilan terma. Dalam kajian ini, GO telah disintesis dengan menggunakan kaedah Hummers terubah suai. Kuantiti GO yang berlainan (0.01-1.0 % bt.) telah dicampur ke dalam lateks getah asli dan sampel filem dihasilkan melalui proses pencelupan. Keputusan yang diperoleh telah menunjukkan peningkatan yang ketara sebanyak 12% bagi sampel 1.0 % bt. GO/NR dalam rintangan tusukan. Selain itu, penambahan GO dalam NR juga turut meningkatkan tegasan pada 300%, tegasan pada 500%, modulus pada 300% dan 500% serta cabikan.

Kata kunci: Cabikan; grafin oksida; kekuatan tegangan; lateks getah asli; penusukan

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*Pengarang untuk surat-menyurat; email: chia@ukm.edu.my