| Title: | Chitosan and chitosan-co-poly(epsilon-caprolactone) grafted multiwalled carbon nanotube transducers for vapor sensing |
| Author(s): | Rana VK; Akhtar S; Chatterjee S; Mishra S; Singh RP; Ha CS; |
| ISSN/ISBN: | 1533-4880 (Print) 1533-4880 (Linking) |
| Abstract: | "Vapor sensitive transducer films consisting of chitosan grafted (CNT-CS) and chitosan-co-polycaprolactone grafted (CNT-CS-PCL) multiwalled carbon nanotubes were prepared using a spray layer-by-layer technique. The synthesized materials (CNT-CS and CNT-CS-PCL) were characterized by Fourier transform infrared spectroscopy, 13C CP/MAS solid state nuclear magnetic resonance spectroscopy and thermogravimetric analysis. Both CNT-CS and CNT-CS-PCL transducers were analyzed for the response of volatile organic compounds and toluene vapors. The ranking of the relative resistance (A(r)) for both chitosan based transducers were as follows: toluene < chloroform < ethanol < methanol. The CNT transducer (CNT-CS) was correlated selectively with an exponential law to the inverse of Flory-Huggins interaction parameters, chi12. Dosing the films on the interdigitated electrodes with methanol, ethanol, chloroform and toluene vapors increased the film resistance of CNT-CS but decreased the resistance of CNT-CS-PCL compared to that of the reported transducers" |
| Keywords: | "Biocompatible Materials/chemistry Biodegradation, Environmental Chitosan/*chemistry Chloroform/chemistry Electrochemistry Equipment Design Ethanol/chemistry Gases Magnetic Resonance Spectroscopy Methanol/chemistry Microscopy, Electron, Scanning Nanotubes, ;" |
| Notes: | "MedlineRana, Vijay Kumar Akhtar, Shamim Chatterjee, Sudipta Mishra, Satyendra Singh, Raj Pal Ha, Chang-Sik eng Research Support, Non-U.S. Gov't 2014/04/22 J Nanosci Nanotechnol. 2014 Mar; 14(3):2425-35. doi: 10.1166/jnn.2014.8498" |
