Sains Malaysiana 43(6)(2014): 851–859

Enhanced Mechanical Properties of Chitosan/EDTA-GO Nanocomposites Thin Films

(Peningkatan Sifat Mekanik Filem Nipis Nanokomposit Kitosan/EDTA-GO)

N.I. SYUHADA¹, N.M. HUANG¹*, S. VIJAY KUMAR², H.N. LIM³, S.A. RAHMAN¹, G.S.H. THIEN¹, N.A. IBRAHIM³, M. AHMAD³& P. MORADIHAMEDANI³

¹Low Dimensional Materials Research Centre, Department of Physics, University of Malaya,

50603 Kuala Lumpur, Malaysia

²Laboratoire de Chimie Physique Macromoléculaire, ENSIC, Université de Lorraine, 1 rue Grandville, BP 20451, 54 001 Nancy Cedex, France

³Department of Chemistry, Faculty of Science, Universiti Putra Malaysia

43400 Serdang, Selangor, Malaysia

Diserahkan: 19 April 2013/Diterima: 7 Januari 2014

ABSTRACT

Nanocomposite thin films of chitosan/graphene oxide (CS/GO) and chitosan/ EDTA-GO (CS/EDTA-GO) were prepared by environmental friendly method and the properties were compared. The experimental results showed fine dispersion of GO and EDTA-GO in CS matrix and some interaction occur between the filler and the CS matrix that leads to better distribution of stress transfer. At 0.5 wt. %, both CS/GO and CS/EDTA-GO experienced maximum tensile stress by 51 and 71% compared with CS. Moreover, the elongation at break for both nanocomposites increases and the amount of filler increases.

Keywords: Chitosan; functionalized graphene oxide; graphene oxide; nancomposite thin films

ABSTRAK

Filem nipis nanokomposit kitosan/grafin oksida (CS/GO) dan kitosan/EDTA-GO (CS/EDTA-GO) telah disediakan dalam kaedah yang mesra alam dan sifat dibincangkan. Keputusan eksperimen menunjukkan GO dan EDTA-GO sangat larut di dalam matriks kitosan dan ini membantu dalam pemindahan tekanan. Pada pengisian 0.5 wt. %, kedua-dua CS/GO dan CS/EDTA-GO menunjukkan kadar kekuatan yang paling tinggi iaitu 51 dan 71% berbanding CS. Selain itu, pemanjangan filem bagi kedua-dua nanokomposit bertambah seiring dengan pertambahan pengisian.  

Kata kunci: Filem nipis nanokomposit; grafin oksida; grafin oksida fungsian; kitosan

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*Pengarang untuk surat-menyurat; email: huangnayming@um.edu.my