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FUNCTIONALIZATION AND CHARACTERIZATION OF MULTI-WALLED CARBON NANOTUBES/POLYPROPYLENE NANOCOMPOSITE

HOR, WEI VERN (2011) FUNCTIONALIZATION AND CHARACTERIZATION OF MULTI-WALLED CARBON NANOTUBES/POLYPROPYLENE NANOCOMPOSITE. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

Chemical and physical functionalization of multi-walled carbon nanotubes (MWCNT) have been commonly practiced to achieve better dispersion of carbon nanotubes in polymer matrix. However, not much is known about the effect of each functionalization method as well as a combination of both on the mechanical properties of carbon nanotubes/polypropylene nanocomposites. This work describes the various functionalization methods (acid-treatment, non-ionic surfactant treatment with Triton X-100), fabrication of MWCNT/PP nanocomposites via melt blending and injection molding as well as characterization of mechanical properties. Microscopy analysis (FESEM, TEM, XPS) showed effective purification of MWCNTs under acid treatment, and better dispersion under both chemical and physical functionalization techniques combined, in their respective. order. Tensile tests showed increase in tensile strength for the nanocomposites that contain MWCNTs up to 2 wt%. A decrease in tensile strength was seen in samples that contain 4wt% ofMWCNTs for both raw and Triton X-100 functionalized, signifying MWCNT degradation/rebundling at composition with higher content. of MWCNTs. For the acid-treated MWCNTs, however, showed slight improvement even at 4wt%, showing a possibility of effective dispersion ofMWCNTs.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Composites material - Nanocomposites
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 12 Nov 2013 14:59
Last Modified: 25 Jan 2017 09:42
URI: http://utpedia.utp.edu.my/id/eprint/10483

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