Vapour sensing with conductive polymer nanocomposites (CPC): polycarbonate-carbon nanotubes transducers with hierarchical structure processed by spray layer by layer
| Title | Vapour sensing with conductive polymer nanocomposites (CPC): polycarbonate-carbon nanotubes transducers with hierarchical structure processed by spray layer by layer |
| Publication Type | Journal Article |
| Year of Publication | 2009 |
| Authors | Lu, J, Kumar, B, Castro, M, Feller, J-F |
| Journal | Sensors and Actuators B-Chemical |
| Volume | 140 |
| Issue | 2 |
| Pagination | 451-460 |
| Date Published | JUL |
| ISSN | 0925-4005 |
| Keywords | Atomic force microscopy, carbon nanotube, Chemo-electrical behaviour, Conductive polymer nanocomposite, Vapour Sensing, Volatile organic compounds |
| Abstract | The development of conductive polymer nanocomposite (CPC) sensors for volatile organic compounds (VOC) detection has been carried out using a spray layer by layer (LbL) process. This technique was successfully used to hierarchically structure polycarbonate-multiwall carbon nanotubes (PC-CNT) solutions into a double percolated architecture as attested by atomic force microscopy (AFM) and optical microscopy (OM). PC-CNT vapour sensing behaviour was investigated as a function of CNT content, films thickness, vapour flow and vapours solubility parameter. The response ranking A(r)(toluene)>A(r)(methanol)>A(r)(water)of PC-CNT was found to be coherent with kappa(12) Flory-Huggins interaction parameters provided that signals are normalised by analyte molecules number. Signals shape was interpreted to the light of Langmuir-Henry-Clustering (LHC) model and found to be proportional to vapour content. (C) 2009 Elsevier B.V. All rights reserved. |
| DOI | 10.1016/j.snb.2009.05.006 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 3.368 |