DocumentCode :
1280642
Title :
Molecular motion, morphology and properties of 3-isocyanato-propyltriethoxysilane-modified multi-walled carbon nanotube/epoxy composites
Author :
Sheng-Yen Wu ; Siu-Ming Yuen ; Ma, Chen-Chi M. ; Yuan-Li Huang ; Chih-Chun Teng
Author_Institution :
Dept. of Chem. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Volume :
6
Issue :
6
fYear :
2011
fDate :
6/1/2011 12:00:00 AM
Firstpage :
463
Lastpage :
467
Abstract :
In this study, both epoxy resin and multi-wall carbon nanotubes (MWCNTs) were modified with 3-isocyanato-propyltriethoxysilane (IPTES). Scanning electron microscopy and transmission electron microscopy microphotographs show that the MWCNTs dispersed well in the epoxy matrix. The molecular motion of silane-modified MWCNT/epoxy composites was studied using high-resolution solid-state 13C NMR. Results show that 1 wt silane-modified MWCNT/epoxy composite exhibits less molecular motion than composite with a lower silane-modified MWCNT content. The glass transition temperature (Tg) of the neat epoxy is 192.6°C and increases to 212.5°C with 1°wt° IPTES-MWCNT content. Dynamic mechanical analysis data of the MWCNT/epoxy composites show the storage modulus at 50°C and the Tg of the IPTES-modified epoxy increased with IPTES-MWCNT content.
Keywords :
carbon nanotubes; elastic moduli; glass transition; nanocomposites; nuclear magnetic resonance; resins; scanning electron microscopy; transmission electron microscopy; 3-isocyanato-propyltriethoxysilane-modified multi-walled carbon nanotube-epoxy composites; C; dynamic mechanical analysis; glass transition temperature; high-resolution solid-state 13C NMR; molecular motion; scanning electron microscopy; storage modulus; temperature 50 degC; transmission electron microscopy;
fLanguage :
English
Journal_Title :
Micro & Nano Letters, IET
Publisher :
iet
ISSN :
1750-0443
Type :
jour
DOI :
10.1049/mnl.2011.0138
Filename :
5960474
Link To Document :
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