02718nas a2200277   4500008004100000022001400041245012100055210006900176260006800245300001400313490000800327520168800335653003602023653002902059653002602088653002402114653002702138653001802165653001902183100002502202700002202227700002102249700002002270700001802290856013202308       2008                        eng d  a0021-899500aDevelopment of nanofibrous morphology in LDPE/LLDPE/PP blends and its effect on mechanical properties of blend films0 aDevelopment of nanofibrous morphology in LDPELLDPEPP blends and   a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcMAR  a4005-40120 v1073 a<p>Nanofibrous morphology has been observed in ternary blends of low density polyethylene (LDPE), linear low density polyethylene (LLDPE), and isotactic polypropylene (PP) when these were melt-extruded via slit die followed by hot stretching. The morphology was dependent on the concentration of the component polymers in ternary blend LDPE/LLDPE/PP. The films were characterized by wide angle X-ray diffraction (XRD), scanning electron microscopy (SEM), and testing of mechanical properties. The XRD patterns reveal that the P phase of PP is obtained in the as-stretched nanofibrillar composites, whose concentration decreases with the increase of LLDPE concentration. The presence of PP nanofibrils shows significant nucleation ability for crystallization of LDPE/LLDPE blend. The SEM observations of etched samples show an isotropic blend of LDPE and LLDPE reinforced with more or less randomly distributed and well-defined nanofibrils of PP, which were generated in situ. The tensile modulus and strength of LDPE/LLDPE/PP blends were significantly enhanced in the machine direction than in the transverse direction with increasing LLDPE concentration. The ultimate elongation increased with increasing LLDPE concentration, and there was a critical LLDPE concentration above which it increased considerably. There was a dramatic increase in the falling dart impact strength for films obtained by blow extrusion of these blends. These impressive mechanical properties of extruded samples can be explained on the basis of the formation of PP nanofibrils with high aspect ratio (at least 10), which imparted reinforcement to the LDPE/LLDPE blend. (C) 2007 Wiley Periodicals, Inc.</p>10alinear low density polyethylene10alow density polyethylene10amechanical properties10amelt-extruded films10ananofibrous morphology10apolypropylene10aternary blends1 aSonawane, Pradip, S.1 aRadhakrishnan, S.1 aBhangale, J., A.1 aGadhavi, A., L.1 aKhare, Anagha  uhttps://library.ncl.res.in/content/development-nanofibrous-morphology-ldpelldpepp-blends-and-its-effect-mechanical-properties-001863nas a2200241   4500008004100000022001400041245012200055210006900177260007600246300001200322490000800334520098100342653002001323653002301343653001101366653002101377653001701398653001601415653001401431100002201445700002201467856013201489       2011                        eng d  a0021-899500aDopant induced effect on electrocatalytic reduction of nitrobenzene using conducting polypyrrole thin film electrodes0 aDopant induced effect on electrocatalytic reduction of nitrobenz  aCOMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USAbWILEY-BLACKWELLcAPR  a719-7240 v1203 a<p>Conducting polypyrrole electrodes were prepared by electrochemical polymerization of pyrrole on vacuum-metallized glass substrates. These electrodes were modified by doping with a range of metal halides as dopant ions having different electronegativity. Electrochemical reduction of nitrobenzene using these electrodes was studied by means of cyclic voltammetry technique in acetonitrile medium containing aqueous HClO(4) (0.1M) as supporting electrolyte. It was found that the electronegativity of the dopant ion played a very important role in the electrocatalytic activity. Polypyrrole doped with nickel chloride gave the highest anodic current at the reduction potential of nitrobenzene. The results were explained on the basis of charge transfer efficiency at the electrode-electrolyte interface, which was associated with the acceptor state created by the dopant in the semi-conducting polymer. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 719-724, 2011</p>10acharge transfer10aconducting polymer10aDoping10aelectrocatalysis10anitrobenzene10apolypyrrole10areduction1 aAdhikari, Arindam1 aRadhakrishnan, S.  uhttps://library.ncl.res.in/content/dopant-induced-effect-electrocatalytic-reduction-nitrobenzene-using-conducting-polypyrrole-0