02050nas a2200265 4500008004100000022001400041245012200055210006900177260009200246300001400338490000700352520107800359653002101437653001301458653001101471653003101482653001901513100002301532700001901555700002401574700002201598700002001620700001801640856012601658 2014 eng d a1533-488000aChitosan and chitosan-co-poly(epsilon-caprolactone) grafted multiwalled carbon nanotube transducers for vapor sensing0 aChitosan and chitosancopolyepsiloncaprolactone grafted multiwall a26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USAbAMER SCIENTIFIC PUBLISHERScMAR a2425-24350 v143 a
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, C-13 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, chi(12). 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.
10aBiocompatibility10aChitosan10aMWCNTs10aPoly(epsilon-caprolactone)10aVapour Sensing1 aRana, Vijay, Kumar1 aAkhtar, Shamim1 aChatterjee, Sudipta1 aMishra, Satyendra1 aSingh, Raj, Pal1 aHa, Chang-Sik uhttp://library.ncl.res.in/content/chitosan-and-chitosan-co-polyepsilon-caprolactone-grafted-multiwalled-carbon-nanotube-0