Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7215848 | Composites Science and Technology | 2014 | 6 Pages |
Abstract
Cation-Ï effect on physisorption of aromatic ionic salts to multi-walled carbon nanotube (MWCNT) was demonstrated by the excess adsorption over their pre-ionized aromatic compounds through thermogravimetric analysis. Their adsorption layer on the surface of MWCNT was confirmed by high resolution transmission electron microscopy and X-ray photoelectron spectroscopy. Ionic salt-adsorbing MWCNT showed better dispersion in acetone than pristine and pre-ionized compound-adsorbing MWCNT. Incorporation of 1 wt% ionic salt-adsorbing MWCNT is able to gel the epoxy resin at room temperature according to the rheological study. Based on our proposed model, 1 wt% fully-dispersed MWCNTs are enough to form an interconnected network in epoxy resin resulting in gelation. After crosslinking with amine curing agent, the epoxy nanocomposites incorporating 1 wt% ionic salt-adsorbing MWCNT displayed substantially higher glass and à transition temperatures than that incorporating pristine MWCNT.
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Engineering (General)
Authors
Yu-Hsun Chang, King-Fu Lin,