Functionalization of Multi-walled Carbon Nanotube by Treatment with Dry Ozone Gas for the Enhanced Dispersion and Adhesion in Polymeric Composites
- Authors
- 김정환; 민병길
- Issue Date
- 2010
- Publisher
- 한국탄소학회
- Keywords
- MWNT; Ozone; Functionalization; Polyamide 6
- Citation
- Carbon Letters, v.11, no.4, pp.298 - 303
- Journal Title
- Carbon Letters
- Volume
- 11
- Number
- 4
- Start Page
- 298
- End Page
- 303
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/19228
- ISSN
- 1976-4251
- Abstract
- A method of functionalization of multi-walled carbon nanotube (MWNT) at room temperature using dry ozone gas is described. The resulting MWNT were characterized by Fourier transform infrared, x-ray photoelectron spectroscopy, and scanning electron microscopy. Combined to these analyses and solubility in liquids, it could be concluded that the dry ozone gas exposure introduces polar functional groups such as carboxylic groups to MWNT similar to acidic modification of MWNT. Particularly, the stable dispersion of MWNT in water after ozone treatment above a critical level could be obtained, implying potential bio-application. The hydrophilic functional groups on the MWNT introduced by ozone oxidation were helpful in improving the interaction with functional groups in PA6 such as −NH2 and −CONH- resulting in improved mechanical properties.
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Collections - School of Science and Engineering of chemical Materials > 1. Journal Articles
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