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Differential scanning calorimetry data collection

The differential scanning calorimetry (DSC) thermogram of niclosamide was obtained using a General V4 IC DuPont 2100. The data points represented by the curve shown in Fig. 2 were collected from 200 to 400°C using a heating rate of 5°C/ min. It was found that the compound melted at 231.66°C with an enthalpy of fusion equal to 69.31 J/g. [Pg.72]

Instrumentation. UV/Visible spectra were collected on a Perkin-Elmer Lambda 4 spectrophotometer. IR spectra were collected on a Perkin-Elmer 1640 spectrophotometer. NMR spectra were taken on a Nicolet NT-200 spectrometer. Differential scanning calorimetry was run on a Perkin-Elmer DSC-4 unit, equipped with a system 4 microprocessor controller and a 3600 data station. Elemental analyses were run by the Purdue microanalysis laboratory in the Department of Chemistry at Purdue University and by Huffman Labs (Golden, CO). Lignin group analysis techniques are described in references 19-21. [Pg.479]

Differential scanning calorimetry of acetylcholine chloride was performed using a Dupont DSC Model TA 9900 thermal analyzer system, interfaced to a Dupont data collection system. Figure 2 shows the DSC thermogram, which was recorded from 50 to 350°C. [Pg.10]

Differential scanning calorimetry curve Graphical representation of the data collected by a differential scanning calorimeter, where the differential energy supplied is plotted as a function of temperature (scanning mode) or time (isothermal mode). [Pg.159]

Any mention of solvent evaporation, concentration of solutions, or solvent removal means that solvent was removed by vacuum rotary evaporation using a Buchi Rotovapor-R type KRV 65/45, unless otherwise noted. A Waring commercial blender (Fisher catalog, number 14-509-19) was used. The dry box used was made by the Kewaunee Scientific Equipment Company. Differential Scanning Calorimetry (DSC) was done with a Perkin-Elmer Model DSC-IB instrument. Dilute solution viscosity data was collected using a Cannon 150-D400 Ubbelohde dilution viscometer. [Pg.71]

Polymers obtained from PEL monomers of different optical purity were characterized as follows (1) for crystalline properties by differential scanning calorimetry (DSC) and wide-angle x-ray diffraction (2) for relative molecular weights by solution viscosity (3) for structure by IR and NMR spectroscopy and (4) for chiroptical properties in solution by optical rotatory dispersion (ORD) and circular dichroism (CO). Molecular weight and melting point data for both the racemic and optically-active PEL polymers are collected in Table I. [Pg.211]

Table 3.4 collects the differential scanning calorimetry (DSC) studies of iioii-isothermal crystallization and melting behavior of PP and its nanocomposites produced by the one-step technique. The data show that the melting point of PP is nearly not affected by the nano-silica. It means that no transition of... [Pg.137]

Abstract The miscibility behavior in blends of polyethersulfone (Victrex PES) with the polyimide PI 2080, (the condensation product of 3,3, 4,4 -benzophenone tetracarboxylic dianhydride [BDTA] and a 4 1 mixture of 2,4-toluene diisocyanate and 4,4 -diphenylmethane diisocyanate) or with the polyimide XU 218 (the condensation product of BDTA and 5(6)-amino-l-(4 -aminophenyl)-l,3,3 -trimethylindane) was investigated using differential scanning calorimetry, dynamic mechanical analysis and thcmiogravimetric analysis. The effects of solvents (dimethylacetamide, tetramethylene sulfone, dimethyl sulfoxide and l-methyl-2-pyrrolidone) on miscibility were studied and one solvent, tetramethylene sulfone was found to have a plasticizing effect. In the absence of solvent, the equilibrium phase boundary for these blends was in the experimentally inaccessable region below the Tg-composition line. The phase boundary at zero solvent concentration was obtained by extrapolation using data collected in the presence of the plasticizer. [Pg.213]


See other pages where Differential scanning calorimetry data collection is mentioned: [Pg.7]    [Pg.584]    [Pg.586]    [Pg.191]    [Pg.134]    [Pg.97]    [Pg.69]    [Pg.585]    [Pg.289]    [Pg.282]    [Pg.2285]    [Pg.288]    [Pg.284]    [Pg.237]    [Pg.411]    [Pg.394]   
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Data collection

Differential scanning calorimetry data

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