02051nas a2200265   4500008004100000022001400041245012200055210006900177260009200246300001400338490000700352520107800359653002101437653001301458653001101471653003101482653001901513100002301532700001901555700002401574700002201598700002001620700001801640856012701658       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<p>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 &lt; chloroform &lt; ethanol &lt; 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.</p>10aBiocompatibility10aChitosan10aMWCNTs10aPoly(epsilon-caprolactone)10aVapour Sensing1 aRana, Vijay, Kumar1 aAkhtar, Shamim1 aChatterjee, Sudipta1 aMishra, Satyendra1 aSingh, Raj, Pal1 aHa, Chang-Sik  uhttps://library.ncl.res.in/content/chitosan-and-chitosan-co-polyepsilon-caprolactone-grafted-multiwalled-carbon-nanotube-002308nas a2200193   4500008004100000245007900041210006900120260000800189300001200197490000700209520165900216100002201875700001801897700002001915700002201935700002701957700001901984856011102003       2017                        eng d00aControlling necking in extrusion film casting using polymer nanocomposites0 aControlling necking in extrusion film casting using polymer nano  cFEB  a213-2330 v563 aThe research described was concerned with the effect of layered-silicate-based organically modified nanoclay fillers on controlling the extent of necking in a polymer melt extrusion film casting (EFC) process. We show that a linear polythylene resin (such as a linear low-density polyethylene-LLDPE) filled with a very low percentage of well-dispersed (or intercalated) nanoclay displays an enhanced resistance to the necking phenomenon. In general, melt-compounded nanoclay-filled LLDPE resin formulations displayed a higher final film width (less necking), thus a lower final film thickness (greater draw down for the same draw ratio), and cooled down faster when compared to the base LLDPE resin. Incorporation of nanoclay filler in the mainly linear chain LLDPE resin led to significant modification of the melt rheological properties that, in turn, affected the melt processability of these formulations. Primarily, the intercalated nanoclay-filled LLDPE formulations displayed the presence of strain-hardening in unaxial extensional rheology. Additionally, the presence of well-dispersed nanoclay in the LLDPE resin led to a display of prominent extrudate swell indicating the presence of melt elasticity in such formulations. The presence of melt elasticity, as shown by shear rheology and strain-hardening, observed by uniaxial extensional rheology, contributed to the LLDPE nanoclay formulations displaying an enhanced resistance to necking for these films. It can be concluded that linear chain polymers susceptible to necking in an EFC process can be made more resistant to such necking by using nanoclay fillers at very low levels of loading.1 aRokade, Dhammaraj1 aAzad, Lal, B.1 aPoddar, Suparna1 aMishra, Satyendra1 aPol, Harshawardhan, V.1 aShukla, Rishab  uhttps://library.ncl.res.in/content/controlling-necking-extrusion-film-casting-using-polymer-nanocomposites