| DOI | Resolve DOI: https://doi.org/10.1088/0957-4484/23/28/285701 |
|---|
| Author | Search for: Martinez-Rubi, Y.1; Search for: Gonzalez-Dominguez, J. M.; Search for: Ansón-Casaos, A.; Search for: Kingston, C. T.1; Search for: Daroszewska, M.1; Search for: Barnes, M.1; Search for: Hubert, P.; Search for: Cattin, C.; Search for: Martinez, M. T.; Search for: Simard, B.1 |
|---|
| Affiliation | - National Research Council of Canada. Security and Disruptive Technologies
|
|---|
| Format | Text, Article |
|---|
| Subject | Arc-discharge method; Characterization techniques; Chemical functionalization; Coupling reaction; Direct integration; Epoxy matrices; FTIR; Interface interaction; Rheology measurement; Chemical bonds; Electronic properties; Functional groups; Molecular weight; Oligomers; Optical microscopy; Thermogravimetric analysis; Thermosets; Fourier transform infrared spectroscopy |
|---|
| Abstract | We have modified single walled carbon nanotubes (SWCNTs) with well defined matrix-based architectures to improve interface interaction in SWCNT/epoxy composites. The hardener and two pre-synthesized oligomers containing epoxy and hardener moieties were covalently attached to the SWCNT walls by insitu diazonium or carboxylic coupling reactions. In this way, SWCNTs bearing amine or epoxide-terminated fragments of different molecular weights, which resemble the chemical structure of the cured resin, were synthesized. A combination of characterization techniques such as Raman and infrared absorption (FTIR) spectroscopy, elemental analysis and coupled thermogravimetry-FTIR spectroscopy were used to identify both the functional groups and degree of functionalization of SWCNTs synthesized by the laser ablation and arc-discharge methods. Depending on the type of reaction employed for the chemical functionalization and the molecular weight of the attached fragment, it was possible to control the degree of functionalization and the electronic properties of the functionalized SWCNTs. Improved dispersion of SWCNTs in the epoxy matrix was achieved by direct integration without using solvents, as observed from optical microscopy and rheology measurements of the SWCNT/epoxy mixtures. Composite materials using these fillers are expected to exhibit improved properties while preserving the thermosetting architecture. © 2012 IOP Publishing Ltd. |
|---|
| Publication date | 2012-06-21 |
|---|
| In | |
|---|
| Language | English |
|---|
| Peer reviewed | Yes |
|---|
| NPARC number | 21270147 |
|---|
| Export citation | Export as RIS |
|---|
| Report a correction | Report a correction (opens in a new tab) |
|---|
| Record identifier | 82023bc6-06ea-403c-a1d0-5bda8c05622e |
|---|
| Record created | 2014-01-06 |
|---|
| Record modified | 2020-04-21 |
|---|
