Temperature Modulated Differential Scanning Calorimetry

Theory and Practice of Modulated Temperature Differential Scanning Calorimetry

Stiffness transitions in SixSe1Àx glasses from Raman scattering and temperature-modulated differential scanning calorimetry

Temperature-modulated differential scanning calorimetry ~MDSC! measurements on SixSe12x glasses show glass transitions to be thermally reversing in character in the composition window 0.20,x,0.27. Raman scattering shows a trimodal distribution of vibrational modes, identified with corner-sharing ~CS!, edge-sharing ~ES!, and Se-chain modes ~CM!. In the floppy region, 0,x,0.19, these modes are sy...

Practical approach for measuring heat capacity of pharmaceutical crystals/glasses by modulated-temperature differential scanning calorimetry.

A practical protocol to obtain accurate heat capacity values of pharmaceutical compounds using modulated-temperature differential scanning calorimetry was established. Three pharmaceutical compounds, acetaminophen, indomethacin, and tri-O-methyl-β-cyclodextrin were used as model compounds. Powder samples did not produce reproducible results, presumably due to inclusion of gas in gap of powders ...

DSC, TMDSC AND LISSAJOUS FIGURES Lissajous Figures for Understanding Temperature Modulated Differential Scanning Calorimetry of Nylons

“Heat Flux” instruments use an alternative method where both pans are heated from a single heating source in the DSC cell walls. The temperature difference between the two pans is monitored using thermocouples positioned under the sample and reference pans. The actual heat flow into or out of the sample pan is calculated from the measured temperature difference. This approach is that used by TA...

Separation of glass transition and crystallization in metallic glasses by temperature-modulated differential scanning calorimetry

The glass transition behaviour of the four metallic glasses La55Al25Ni20 , Zn65Mg35, and Nd60Fe30Al10 and Zr30Y30Al15Ni25 has been studied by temperature-modulated di€ erential scanning calorimetry (MDSC). It is clearly demonstrated that the glass transition can be separated from crystallization by MDSC. Two glass transitions have been observed for Zn65Mg35, Nd60Fe30Al10 and Zr30Y30Al15Ni25. Ow...