Nano Archive

Silane-modified MWCNT/PMMA composites - Preparation, electrical resistivity, thermal conductivity and thermal stability

Yuen, Siu-Ming and Ma, Chen-Chi M. and Chiang, Chin-Lung and Chang, Jen-An and Huang, Sung-Wei and Chen, Shia-Chung and Chuang, Chia-Yi and Yang, Cheng-Chien and Wei, Ming-Hsiung (2007) Silane-modified MWCNT/PMMA composites - Preparation, electrical resistivity, thermal conductivity and thermal stability. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 38 (12). pp. 2527-2535.

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Official URL: http://dx.doi.org/10.1016/j.compositesa.2007.07.01...

Abstract

Multiwalled carbon nanotubes (MWCNT) were modified using 3-isocyanato- propyltriethoxysilane (IPTES). Crosslinkable PMMA was prepared from MMA monomer and Vinyltriethoxysilane (VTES) (PMMA-VTES). The IPTES-modified MWCNT (Si-MWCNT) was mixed with the PMMA-VTES copolymer and crosslinked with catalyst to form Si-MWCNT/PMMA-VTES composites. The degree of condensation of tri-distribution structure of the Si-MWCNT/PMMA-VTES composites decreases as the Si-MWCNT content increases. The morphology of the Si-MWCNT/PMMA-VTES composites was analyzed by SEM and TEM. The MWCNTs were well dispersed in the PMMA-VTES matrix. Surface and volume electrical resistivity decreased as the MWCNT content increased. The thermal conductivity of the PMMA-VTES composites increased by 87.5% when 0.99 wt% Si-MWCNT content was added to neat PMMA-VTES. The thermal stability of the PMMA-VTES in nitrogen and air increased significantly even when a small quantity (0.5 wt%) of Si-MWCNT was added. (c) 2007 Published by Elsevier Ltd.

Item Type:Article
Uncontrolled Keywords:polymer-matrix composites (PMCs); multiwalled carbon nanotube; electrical properties; thermal properties
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
ID Code:2946
Deposited By:Anuj Seth
Deposited On:12 Jan 2009 16:58
Last Modified:20 Jan 2009 14:21

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