Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24228
Title: Improvement of carbon nanotubes dispersion by chitosan salt and its application in silicone rubber
Authors: Shang, S 
Gan, L
Yuen, MCW
Keywords: Carbon nanotubes
Nano composites
Polymer-matrix composites (PMCs)
Issue Date: 2013
Publisher: Pergamon Press
Source: Composites science and technology, 2013, v. 86, p. 129-134 How to cite?
Journal: Composites science and technology 
Abstract: We have prepared chitosan hydrochloric acid salt and investigated its assistance in improving the dispersion of carbon nanotubes in different solvents and silicone rubber in this study. It was found that the dispersions of carbon nanotubes in some solvents improved to some extent. Long-time stable dispersions were achieved in water and chloroform, even after being placed for 3. months and a following centrifuging (10,000. rpm for 10. min). It was also found that treated carbon nanotubes could be dispersed in the silicone rubber homogeneously based on SEM and XRD analysis. The incorporation of carbon nanotubes enhanced the thermal stability of the silicone rubber. They also significantly improved the mechanical properties of the silicone rubber matrix. From the FTIR spectra, it was believed that chitosan hydrochloric acid salt adsorbed on the surface of the carbon nanotube and then interacted with silicone rubber matrix, resulting in the enhancement of dispersion of carbon nanotubes. From this study, chitosan hydrochloric acid salt was an easy available material which could be used as the treating agent to enhance the dispersion of carbon nanotubes in solvents and polymer matrixes, with improved thermal and mechanical properties in the resulting nanocomposites.
URI: http://hdl.handle.net/10397/24228
ISSN: 0266-3538
EISSN: 1879-1050
DOI: 10.1016/j.compscitech.2013.07.010
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