Poly differential scanning calorimetry curves

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 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 15. Differential Scanning Calorimetry (DSC) curve of 90% trans-i, 4-poly butadiene...

The continuous change of the thermodiagram in polymerization has mainly been studied for DSP by means of differentially scanning calorimetry (DSC)10). DSC curves obtained in the course of photopolymerization of DSP crystals at the irradiation times of 20, 40, 50, and 70 min with a xenon lamp are shown in Fig, 15 together with those of DSP, as-polymerized, recrystallized, and amorphous poly-DSP s. 

Uniaxial tensile tests of poly (ethylene terephthalate) (PET)/montmorillonite(MMT) nanocomposites were preformed over a temperature range of 85°C-105°C and stretch rate of 7.5mm/s-12.5mm/s. The stress-strain curves consisted of three regions the hnear visoelasticity, the rubbery plateau and the strain hardening. The effects of temperature and stretch rate on stress-strain behavior were discussed. The results of differential scanning calorimetry (DSC) measurements indicated that the stretch lead the increase of the crystallinity degree of specimens. The wide angle X-ray diffraction (WAXD) measurements revealed that the more perfect crystal structures were obtained with the increase of temperature and oriented along the stretch direction. 

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