Universiti Teknologi Malaysia Institutional Repository

Functionalized carbon nanotubes for mixed matrix membrane

Mohd. Sanip, Suhaila and Ismail, Ahmad Fauzi and Aziz, Madzlan and Soga, Tetsuo (2009) Functionalized carbon nanotubes for mixed matrix membrane. IEICE Transactions on Electronics, E92-C (12). pp. 1427-1431. ISSN 0916-8524

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Official URL: http://dx.doi.org/10.1587/transele.E92.C.1427

Abstract

Carbon nanotubes (CNTs) have generated great interest within the many areas of nanotechnology due to their superior and outstanding physical properties. However effective dispersion in many solvents has imposed limitations upon the use of CNTs in a number of novel applications. Functionalization presents a solution for CNTs to be more soluble which make them integrate well into any organic, inorganic or biological systems. CNTs can be easily functionalized using cyclodextrin (CD) treatment. The CD modification of carbon nanotubes is both simple and effective. It requires no prolonged heating, filtration and washing which can severely damage the small diameter nanotubes. The formation of surface functional groups and changes of nanotubes structures of functionalized carbon nanotubes (f-CNTs) were monitored by Fourier transform infrared spectroscopy (FTIR), Thermo gravimetric analysis (TGA) and field emission scanning electron microscopy (FESEM), respectively. From the TGA results, the amount of weight loss of the f-CNTs in varying ratios indicated the amount of CD that was functionalized. It was also noted that the FTIR spectra showed the presence of functional groups associated with CD in the f-CNTs. As a result, the cyclodextrin groups were found to be possibly adsorbed at the surface of the nanotubes walls. The f-CNTs showed substantial solubility in N-methyl-2-pyrrolidone (NMP) which helps in a better distribution of the CNTs in the mixed matrix membrane (MMM) prepared. Hence, the influence of the f-CNTs in the polymer matrix will give rise to enhanced physical properties of the MMM suitable for applications in gas separations.

Item Type:Article
Uncontrolled Keywords:functionalized carbon nanotubes, mixed matrix membrane
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:Chemical and Natural Resources Engineering (Formerly known)
ID Code:14623
Deposited By: Ms Zalinda Shuratman
Deposited On:30 Sep 2011 15:20
Last Modified:30 Sep 2011 15:20

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