Preparation and Properties of the Single-Walled Carbon Nanotube/Cellulose Nanocomposites Using N-methylmorpholine-N-oxide Monohydrate

Title
Preparation and Properties of the Single-Walled Carbon Nanotube/Cellulose Nanocomposites Using N-methylmorpholine-N-oxide Monohydrate
Authors
김동훈박수영김준경박민
Keywords
lyocell; swnt; nanocomposite; single-walled carbon nanotube
Issue Date
2010-09
Publisher
Journal of applied polymer science
Citation
VOL 117, NO 6, 3588-3594
Abstract
Single-walled carbon nanotube (SWNT)/cellulose nanocomposite films were prepared using N-methylmorpholine- N-oxide (NMMO) monohydrate as a dispersing agent for the acid-treated SWNTs (A-SWNTs) as well as a cellulose solvent. The A-SWNTs were dispersed in both NMMO monohydrate and the nanocomposite film (as confirmed by scanning electron microscopy) because of the strong hydrogen bonds of the A-SWNTs with NMMO and cellulose. The mechanical properties, thermal properties, and electric conductivity of the nanocomposite films were improved by adding a small amount of the A-SWNTs to the cellulose. For example, by adding 1 wt % of the A-SWNTs to the cellulose, tensile strain at break point, Young’s modulus, and toughness increased ~ 5.4, ~ 2.2, and ~ 6 times, respectively, the degradation temperature increased to 9℃ as compared with those of the pure cellulose film, and the electric conductivities at Φ / (the wt % of A-SWNTs in the composite) = 1 and 9 were 4.97 x 10-4 and 3.74 x 10-2 S/cm, respectively. Thus, the A-SWNT/ cellulose nanocomposites are a promising material and can be used for many applications, such as toughened Lyocell fibers, transparent electrodes, and soforth.
URI
http://pubs.kist.re.kr/handle/201004/37646
ISSN
0021-8995
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KIST Publication > Article
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