Research Article
Amino-Functionalization of Carbon Nanotubes by Using a Factorial Design: Human Cardiac Troponin T Immunosensing Application
Table 1
Experimental factors and their levels employed in
fractional factorial design for amino-functionalization of the MWCNT procedure.
| Experiment | EDA concentration − (50%) + (100%) | H2SO4 concentration − (0.1 mol L−1) + (1.0 mol L−1) | Time of acid treatment of the EDA − (1 h) + (2 h) | Amination time − (2 h) + (4 h) | Amino-MWCNT dispersion time − (2 h) + (4 h) | (A) mean values |
| 1 | − | − | − | − | + | 0.5757 | 2 | + | − | − | − | − | 0.4328 | 3 | − | + | − | − | − | 0.2803 | 4 | + | + | − | − | + | 0.2803 | 5 | − | − | + | − | − | 0.4131 | 6 | + | − | + | − | + | 0.4278 | 7 | − | + | + | − | + | 0.6383 | 8 | + | + | + | − | − | 0.3049 | 9 | − | − | − | + | − | 0.4065 | 10 | + | − | − | + | + | 0.3443 | 11 | − | + | − | + | + | 0.4319 | 12 | + | + | − | + | − | 0.2983 | 13 | − | − | + | + | + | 0.2492 | 14 | + | − | + | + | − | 0.2131 | 15 | − | + | + | + | − | 0.4820 | 16 | + | + | + | + | + | 0.4475 |
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