NOPR Collection:http://nopr.niscpr.res.in/handle/123456789/90062026-10-10T11:51:56Z2026-10-10T11:51:56ZStudies of printing inks on starch blended and surface grafted polyethylene film for flexible packagingGhosh, R NAdhikari, BRay, B Chttp://nopr.niscpr.res.in/handle/123456789/307842016-07-20T06:45:39Z2004-05-01T00:00:00ZTitle: Studies of printing inks on starch blended and surface grafted polyethylene film for flexible packaging
Authors: Ghosh, R N; Adhikari, B; Ray, B C
Abstract: Grafted vinyl acetate surface of starch blended biodegradable polyethylene film was printed with industry standard printing inks based on polyamide resin and organic solvents. Various print and packaging properties were studied to find suitability of the use of such grafted polyethylene film in comparison to ungrafted starch blended polyethylene film and industry standard corona treated polyethylene film. The use of such grafted film was also comparatively studied in polyethylene laminate packaging. Prints and laminates using industrial standard grade polyethylene, starch blended
biodegradable polyethylene and grafted starch blended polyethylene film, were put on soil burial test and studied for biodegradable properties.
Page(s): 357-3662004-05-01T00:00:00ZCO oxidation over Pd/<img src='/image/spc_char/gamma.gif' border=0>-FeMnO<sub>3</sub> catalystKulshreshtha, S KSharma, SVijayalakshmi, RSasikala, Rhttp://nopr.niscpr.res.in/handle/123456789/95202010-06-02T16:31:44Z2004-05-01T00:00:00ZTitle: CO oxidation over Pd/<img src='/image/spc_char/gamma.gif' border=0>-FeMnO<sub>3</sub> catalyst
Authors: Kulshreshtha, S K; Sharma, S; Vijayalakshmi, R; Sasikala, R
Abstract: <img src='/image/spc_char/gamma.gif' border=0>-FeMnO<sub>3</sub>
samples with and without Pd metal impregnation have been prepared by
co-precipitation method and investigated by powder X-ray diffraction and <sup>57</sup>Fe
Mossbauer spectroscopy techniques, for its bulk characteristics. Catalytic
activity of these samples has been studied for CO oxidation reaction by
injecting CO or (CO+O<sub>2</sub>) pulses over their surface, with a view to
delineate the role of Pd metal and reducible cations during this reaction. Pd metal
impregnation over the surface of <img src='/image/spc_char/gamma.gif' border=0>-FeMnO<sub>3</sub>, leads to significant improvement in
its catalytic activity, particularly at lower temperatures. Based on these
experiments, clear evidence for the low temperature (T~350 K)
disproportionation of CO over the surface of Pd metal particles and lattice
oxygen incorporation during CO oxidation reaction, have been presented. From
the comparative study of Fe<sub>2</sub>O<sub>3</sub>, Mn<sub>2</sub>O<sub>3</sub>
and FeMnO<sub>3</sub>, the existence of any synergistic effects between Fe<sup>3+</sup>
and Mn<sup>3+</sup> cations, is ruled out for FeMnO<sub>3</sub>, mixed oxide
system.
Page(s): 427-4332004-05-01T00:00:00ZLow temperature oxidation of ethanolVerma, S Shttp://nopr.niscpr.res.in/handle/123456789/95192010-06-03T16:31:21Z2004-05-01T00:00:00ZTitle: Low temperature oxidation of ethanol
Authors: Verma, S S
Abstract: Oxidation
characteristics of ethanol in the temperature range 200 to 1000 <sup>o</sup>C
suitable to its use in automobiles are studied to highlight the role and
optimum values of different combustion controlling parameters for its clean
combustion. Sensitivity evaluation of different reaction paths has concluded
some important reactions responsible for the ethanol oxidation. It is observed
that clean combustion of ethanol can be obtained with a proper combination of
combustion parameters <i>viz.</i>, temperature, C<sub>2</sub>H<sub>5</sub>OH/O<sub>2</sub>
mole ratio and residence time
Page(s): 410-4222004-05-01T00:00:00ZVapour phase transesterification over solid acids for the synthesis of isoamyl salicylateSouza, Joyce DNagaraju, Nhttp://nopr.niscpr.res.in/handle/123456789/95182010-06-03T16:31:02Z2004-05-01T00:00:00ZTitle: Vapour phase transesterification over solid acids for the synthesis of isoamyl salicylate
Authors: Souza, Joyce D; Nagaraju, N
Abstract: The transesterification of methyl salicylate with isoamyl
alcohol has been studied in vapour phase over solid acid catalysts for the
synthesis of isoamyl salicylate. The catalysts used include simple oxides — Al<sub>2</sub>O<sub>3</sub>,
SiO<sub>2</sub>, ZrO<sub>2</sub> and mixed oxides ZrO<sub>2</sub>-Al<sub>2</sub>O<sub>3</sub>
and ZrO<sub>2</sub>-SiO<sub>2</sub>. The effect of sulphation on the catalytic
activity of the oxides and mixed oxides has also been investigated for this
reaction. Catalytic activity studies have been conducted at 200<sup>o</sup>C
for two different flow rates, 5 and 10 mL/h to check the effect of the contact
time of the reactants with the catalyst. All the catalysts used in the reaction
have been found to be active for the formation of isoamyl salicylate via
transesterification of methyl salicylate with isoamyl alcohol. SO<sub>4</sub><sup>2</sup>/ZrO<sub>2</sub>-SiO<sub>2</sub>
(2:8) has been found to be the most active catalyst with 63% conversion of
methyl salicylate to isoamyl salicylate. SO<sub>4</sub><sup>2-</sup>/ZrO<sub>2</sub>,
which exhibited good selectivity was chosen as the catalyst for optimisation of
the reaction conditions to obtain better yield and higher selectivity of
isoamyl salicylate. Optimum yield of isoamyl salicylate was obtained with the
following reaction conditions: amount of catalyst = 0.5 g, calcination
temperature = 550<sup>o</sup>C, reaction temperature = 200 <sup>o</sup>C,
preheater temperature = 250 <sup>o</sup>C, molar ratio of methyl salicylate to
isoamyl alcohol = 1:1.
Page(s): 401-4092004-05-01T00:00:00Z