Differential scanning calorimetry curve

Fig. 7. Thermogravimetry and differential scanning calorimetry curves for corn cob xylan (Unpublished data).

FIGURE 8 Differential Scanning Calorimetry Curve of Griseofulvin... 

Figure 6. Differential scanning calorimetry curves for silicone-epoxy compounds. Key ...

Figure 11. Differential scanning calorimetry curves for semiconductor-grade novolac epoxy compounds. Key ---, Sample F(FR) ----, Sample G (no FR) ambient-nitrogen temperature...

Figure 1. Differential scanning calorimetry curves for 50 wt% dispersions of 1,2-dipalmitoylphosphatidy1-choline-cholesterol mixtures in water containing (a) 0 (b) 5.0 (c) 12.5 (d) 20.0 (e) 32.0 and (f) 50.0 mol% cholesterol. (Reproduced with permission from Ref. 11. Copyright 1968 Elsevier Science Publishing Company, Inc.)...

Figure 6. Effect of annealing on the differential scanning calorimetry curves for a poly(tetramethyl-ene oxide) polyurethane (MDI/BD) (ET-38-1) containing 38% by wt MDI, Thermal treatment (a) control (b) 80°C, 4 hr (c) 110°C, 4 hr and (d) 150°C, 4.5 hr.

Figure 2. Differential scanning calorimetry curves (10°C/min) for blends of polystyrene, PS-600 with PMMA (upper) 34 wt% PS-600 (lower) 42 wt% PS-600.

Figure 3. Differential scanning calorimetry curves (10°C/ min) for blend of 25 wt% PS-2100 in PMMA (upper) after one year at room temperature (lower) after quenching from approximately 150°C.

Figure 5.1. Schematic representation of typical differential scanning calorimetry curves showing a glass transition and possible exothermal and endothermal relaxations.

Figure 7. Differential scanning calorimetry curves for anhydrous milkfat cooled at rates of 0.1° C/ min, TC/min, and 5° C/min to 5° C and stored for time periods (A) 10 minutes, (B) 1 day, (C) 7 days, and (D) 14 days.

A similar thermally-induced inversion of the cholesteric sense was observed for the PBLG liquid crystal in benzyl alcohol. In this solution, a gel-like opaque phase coexists with the cholesteric phase at lower temperatures. The opaque phase disappears around 70 °C, where endothermic peaks are observed in the differential scanning calorimetry curve. The value of S below 70 °C remains constant, and then changes with temperature above 70 °C. The compensation occurs at about 103 °C, and the transition from biphasic phase to the isotropic phase is observed above 150 °C in this case. The results are summarized in Fig. 12, where the reciprocal of the half-pitch is plotted against temperature. The sign of 1/S is taken as positive when the cholesteric sense is the right-handed. 

Based on the structure-related addition schemes for the thermal properties, it should, for example, be possible to quantitatively generate differential scanning calorimetry curves for polymers, copolymers and their mixtures. With easy access to the data bank, it should be possible for thermal analysts to compare their newly measured DSC curves with the computer generated standard curves for on-line analysis of macromolecules. 

A differential scanning calorimetry curve of salicylic acid was obtained (Fig. 9) on a Perkin Elmer DSC 20 differential calorimeter. Nitrogen was used as purge gas. Scan was performed at the rate of 10°C/min from 100-200°C. The DSC curve revealed an endothermic melting peak (Max. 158.2°C). 

FIGURE 7.16 Differential scanning calorimetry curve for a laser-irradiated crystal of Na2[Fe(CN)5N0]-2H20. Heating rate, 4°C/min. Ref. 13f... 

Figure 2. Differential scanning calorimetry curve of fluorocarbon ether bibenzoxazole oligomer.

List some of the factors that influence (a) thermogravimetry curves, (b) differential thermal analysis curves, and (c) differential scanning calorimetry curves, indicating which are most important for the various techniques. 

Figure 1 Differential scanning calorimetry curves of melting of an enantiomeric mixture of a-methylbenzylammonium cinnamate. The left peak shows the enthalpy of melting of the eutectic mixture (racemate). The right peak shows the enthalpy of melting of the (+) enantiomer in the mixture. (From Ref 16.)...

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). 

Figure 4.10 Differential scanning calorimetry curves of the PLTG95/5/5C composite after 0,5, 15, 25,40, and 52 weeks of in vitro degradation (a first heating scan h second heating scan).

FIGURE 7.33 Differential scanning calorimetry curve (a, c) and their derivatives (b, d) for soil samples of (a, b) AC horizon of Houston city and (c, d) Houston black clay the reference was an empty pan, the heating rate was 2.0°C/min, and the atmosphere was pure N2. (Reprinted from Tan et al., Methods of Soil Analysis. Part 1. Physical and Mineralogical Methods, American Society of Agronomy-Soil Science Society of America, Madison, Wisconsin, 2010. With permission from the Soil Science Society of America.)... 

Figure 1. Differential scanning calorimetry curves of three different pofyalkoxide/water sangtles with mixing ratios of 5 1, 4 1 and 3 1 by mass.

Fig. 2. Differential scanning calorimetry curves at a scanning speed of 8 °C/min. 1, Intact PA 2, Physical mixture of PA and DM-jS-CD 3, PA/DM-j8-CD inclusion complex (1 2 molar ratio).

Figure 4. Thermal properties of aliphatic polycarbonates poly(propylene carbonate) (PPC) poly(l,2-butylene carbonate) (PBC) poly(l,2-hex-5-ene carbonate) (PHC) poly(styrene carbonate) (PSC). (a) Thermogravimetric analysis curves (samples were run under an N2 atmosphere with a heating rate of 20 °C/min). (b) Differential scanning calorimetry curves (samples were run under an N2 atmosphere with a heating and cooling rate of 10 °C/min data...

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