Nano Archive

Preparation, morphology and properties of acid and amine modified multiwalled carbon nanotube/polylmide composite

Yuen, Siu-Ming and Ma, Chen-Chi M. and Lin, Yao-Yu and Kuan, Hsu-Chiang (2006) Preparation, morphology and properties of acid and amine modified multiwalled carbon nanotube/polylmide composite. COMPOSITES SCIENCE AND TECHNOLOGY, 67 (11-12). pp. 2564-2573.

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Official URL: http://www.sciencedirect.com/science?_ob=ArticleUR...

Abstract

The precursor of polyimide, polyamic acid, was prepared by reacting 4,4′-oxydianiline (ODA) with 3,3′,4,4′-benzophenone tetracarboxylic dianhydride (BTDA). Unmodified, acid-modified and amine-modified multiwall carbon nanotubes (MWCNT) were separately added to the polyamic acid and heated to 300 °C to produce polyimide/carbon nanotube composite. Scanning electron microscopic (SEM) and transmission electron microscopic (TEM) microphotographs reveal that acid-modified MWCNT and amine-modified MWCNT were dispersed uniformly in the polyimide matrix. The effect of the acid and amine-modified MWCNTs on the surface and volume electrical resistivities of MWCNT/polyimide composites were investigated . The surface electrical resistivity of the nanocomposites decreased from 1.28 × 1015 Ω/cm2 (neat polyimide) to 7.59 × 106 Ω/cm2 (6.98 wt% unmodified MWCNT content). Adding MWCNTs influenced the glass transition temperatures of the nanocomposites. Modified MWCNTs significance enhanced the mechanical properties of the nanocomposites. The tensile strength of the MWCNT/polyimide composite was increased from 102 MPa (neat polyimide) 134 MPa (6.98 wt% acid modified MWCNT/polyimide composites).

Item Type:Article
Uncontrolled Keywords:carbon nanotube; polyimide; morphology; electrical properties; thermal properties; mechanical properties
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanostructured materials
Material Science > Nanochemistry
ID Code:3185
Deposited By:Anuj Seth
Deposited On:26 May 2009 15:54
Last Modified:26 May 2009 15:54

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