02531nas a2200193   4500008004100000022001400041245012400055210006900179260007100248300001600319490000700335520176400342100002102106700001802127700002502145700002402170700002802194856011502222       2010                        eng d  a0024-929700aAbrupt shear thickening of aqueous solutions of hydrophobically modified poly(N,N `-dimethylacrylamide-co-acrylic acid)0 aAbrupt shear thickening of aqueous solutions of hydrophobically   a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcDEC  a10055-100630 v433 a<p>We report some new and interesting observations on the abrupt and large shear-induced thickening of aqueous solutions of hydrophobically modified poly(N,N'-dimethylacrylamide-co-acrylic acid). High molecular weight copolymer was prepared by free radical copolymerization of N,N'-dimethylacrylamide [DMA] and acrylic acid [AA] and was subsequently modified to different extents using a hydrophobic compound, namely, 3-pentadecylcyclohexylamine [3-PDCA], which is derived from a renewable resource material, cashew nutshell liquid [CNSL]. The structural elucidation of the base copolymer and the hydrophobically modified copolymers was performed by (1)H and (13)C NMR spectroscopy. The zero shear viscosities [eta(0)] of the hydrophobically modified polymers were lower than that of the precursor poly(N,N'-dimethylacrylamide-co-acrylic acid) until some critical polymer concentration, which increased with increase in hydrophobic modification. Above the critical concentrations, the eta(0) of the hydrophobically modified copolymers surpassed that of the precursor at the same concentration. At moderate shear rates some of these hydrophobically modified copolymers exhibited an abrupt shear-induced thickening in which the viscosity of the samples increased severalfold. We show here from creep experiments that thickening occurs only when the shear rate reaches a critical value, (gamma) over dot(crit), and that the thickened samples can be trapped in different metastable states by controlling the applied stress. Interestingly, the shear thickened samples showed further thickening upon decreasing the applied stress. Eventually, the metastable samples revert to their equilibrium states at characteristic time that depends on (small) probe stress.</p>1 aLele, Ashish, K.1 aShedge, Aarti1 aBadiger, Manohar, V.1 aWadgaonkar, Prakash1 aChassenieux, Christophe  uhttps://library.ncl.res.in/content/abrupt-shear-thickening-aqueous-solutions-hydrophobically-modified-polynn-001035nas a2200145   4500008004100000245007700041210006900118260000800187520050100195100002400696700002500720700002500745700001700770856010200787       2014                        eng d00aAll-solid-state-supercapacitor and a process for the fabrication thereof0 aAllsolidstatesupercapacitor and a process for the fabrication th  cOCT3 a<p>The present invention discloses. all-solid-state supercapacitor (ASSP) with enhanced electrode-electrolyte interface which gives highest very high specific capacitance, areal capacitance and shows very low internal resistance (ESR). The invention particularly discloses the fabrication of all-solid-state supercapacitor by intercalation of solid state polymer electrolyte inside the conducting porous substrate coated with a charge storage electrode material to achieve the desired effect.</p>1 aKurungot, Sreekumar1 aBadiger, Manohar, V.1 aAnothumakkool, Bihag1 aTorris, Arun  uhttps://library.ncl.res.in/content/all-solid-state-supercapacitor-and-process-fabrication-thereof