Thermogravimetric analysis curves

Figure 4. Thermogravimetric analysis curves of polyester terpolymers...

Since polysulfone is often melt processed at high temperatures (up to 370°C), another requirement of a successful impact modifier is that it display adequate thermal stability at these temperatures. As expected from the known good thermal stability of polysulfone and silicones (10, 11), the PSF/PSX block copolymer displays excellent thermal stability. This is illustrated by the thermogravimetric analysis curves shown in Figure 6. 

Fig. 10 shows the thermograms of cellulose in atmospheres of helium and of oxygen, obtained by Tang and Neill. In the helium atmosphere, there is an endothermic dip in the differential thermal analysis curve and a sharp loss of weight in the thermogravimetric analysis curve beginning at about 300°, which denote the pyrolytic reactions. In the oxygen atmosphere, instead of the endothermic dip, there is an exotherm due to oxidation of the pyrolysis products. 

For the treated cellulose, the differential thermal analysis curve starts to rise rapidly at about 220°, with no indication of an endotherm, and the thermogravimetric analysis curve shows a continuous weight-loss, which is accelerated at this temperature, and a relatively large residue is left. 

Figure 7. Typical differential thermal analysis and thermogravimetric analysis curves for lead azide [2]. Both run in a flowing atmosphere of 10 liters/hr of helium.

Figure 9. Thermogravimetric analysis curves of 87- and 88-series Halthanes show degradation behavior similar to 73-series Halthanes (Figure 6).

Fig. 21. Thermogravimetric analysis curves for polyethylenes in a nitrogen atmosphere [41]. , Hizex 7000 <, Sumikathene MF-40 Ot Sumikathene F-70-6.

Figure 4. Thermogravimetric analysis curves in N2 and air for monomer III polymerized by S seconds irradiation using 0.5 mole % (4-octyloxyphenyl)phenyliodonium hexafluoro-antimonate as photoinitiator.

The McCarty and Green method [3-24, 3-25] only requires a single thermogram (TGA curve). The thermogravimetric analysis curve is assumed to be a continuous function such that, to each point on the curve there corresponds a temperature T and a level of conversion C ... 

Figure 1.7 Thermogravimetric analysis curves for paraffin and high-density polyethylene in a nitrogen atmosphere ( ) paraffin (O) high-density polyethylene. Reproduced with permission from S. Irgashi and H. Kambe, Polymer Preprints, 1964, 5, 333. 1964, American Chemical Society [3]...

Figure 6.35 Thermogravimetric analysis curves for polybenzimidazole ( ) cyanomethylated polybenzimidazole (A) and the Pd(II) complex of the latter (O)-...

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...

FIGURE 12.18 Differential thermogravimetric analysis curves during the temperature programmed oxidation (DTG-TPO) of the Pt/CB catalysts (a) and their supports (b). Heating rate 25Kmin . ... 

Figure 4.1 Thermogravimetric analysis curves of polytetrafluoroethylene (PTFE, Teflon) and PTFE-silica mixtures in air. Reproduced with permission from T.S. Light, L.R Fitzpatrick and J.P. Phanouf, Analytical Chemistry, 1965, 37, 1, 79.

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